. "2008-10-19T19:38:31"^^ . "{{feed title=\"News\" divclass=\"floatbox\" url=\"http://blog.aksw.org/feed/\" max=\"3\"}}\n==Agile Knowledge Engineering and Semantic Web (AKSW)==\nThe Research Group **Agile Knowledge Engineering and Semantic Web (AKSW)** is hosted by the Department for ((http://bis.informatik.uni-leipzig.de Business-oriented Information Systems)) (BIS) of the ((http://www.informatik.uni-leipzig.de Institute of Computer Science)) (~IfI) / ((http://www.uni-leipzig.de University of Leipzig)).\n\n===Goals===\n * Development of methods, tools and applications for adaptive Knowledge Engineering in the context of the Semantic Web\n * Research of underlying Semantic Web technologies and development of fundamental Semantic Web tools and applications\n * Maturation of strategies for fruitfully combining the Social Web paradigms with semantic knowledge representation techniques\n<##> AKSW is committed to the ((http://www.opensource.org/ open source)), ((http://www.soros.org/openaccess/ open access)) and ((http://okfn.org open knowledge)) movements.\n\n===Projects===\nAKSW started a number of high impact R&D projects:\n * ((http://triplify.org Triplify)) tackles the chicken-and-egg problem of the Semantic Web by providing a building block for the \"semantification\" of Web applications.\n * ((Projects/SoftWiki SoftWiki)) - Distributed, end-user centered Requirements Engineering for evolutionary software development\n * ((http://Cofundos.org Cofundos.org)) - is a platform for community innovation and funding of open-source software: many individual donations and contributions are pooled together in order to realize bright software ideas.\n * ((Projects/Powl Powl)) - our Semantic Web application development platform, ((Projects/OntoWiki OntoWiki)) is an adaptive semantic collaboration tool based on Powl implementing the Web 2.0 idea of an architecture of participation.\n * ((Projects/dbpedia DBpedia)) is a community effort to extract structured information from Wikipedia and to make this information available on the Web.\n * ((Projects/DL-Learner DL-Learner)) tackles the problem of learning concept/class definitions in Description Logics/OWL from examples\n * ((Projects/xOperator xOperator)) - A semantic agent for xmpp / jabber network which finds and shares content about resources (using RDF/SPARQL) for you and your jabber friends.\n * ((http://OpenResearch.org OpenResearch.org)) - a semantik Wiki for collecting and sharing scientific meta-data such as CfPs, tool descriptions, research profiles, conference statistics etc.\n * Semantic data integration: ((Projects/R2D2 R2D2)) - a PHP tool and API component for mapping relational database content to RDF based ontologies. ((Projects/LDAP Semantic LDAP)) - bridges the gap between LDAP and the Semantic Web.\n\n===Demos===\nPlease have a look at our demos:\n<#\n\n
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\nDBpedia.org: Querying Wikipedia like a knowledge base.\n
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\nCofundos.org: Community innovation and funding for open-source.\n
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\nTriplify.org: Make Web applications better mashable by exposing semantics.\n
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\nxOperator: Interconnecting the Semantic Web with Instant Messaging Networks.\n
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\nWikipedia Query Builder: Query the over 10M facts extracted from Wikipedia\n
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\nOntoWiki: use social semantic collaboration to build comprehensive knowledge bases
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\nDL-Learner: learn class descriptions by semantically analysing objects.\n
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\nDBpedia Relationship Finder: allows to explore the DBpedia dataset to find relationships between two things.\n
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\nDBpedia Navigator: search/browse in DBpedia and get recommendations on what you may be looking for.\n
\n\n#>" . . . . "2006-01-17T10:59:05"^^ . "{{WantedPages}}" . . . . "2006-01-17T10:59:05"^^ . "{{OrphanedPages}}" . . . . "2006-01-17T10:59:05"^^ . "{{RecentChanges}}" . . . . "2006-01-17T10:59:05"^^ . "{{RecentlyCommented}}" . . . . "2006-01-17T10:59:05"^^ . "{{PageIndex}}" . . . . "2006-01-17T10:59:05"^^ . "{{ChangePassword}}" . . . . "2006-01-17T10:59:05"^^ . "{{Search}}" . . . . "2006-01-17T10:59:05"^^ . "{{Login}}" . . . . "2007-02-23T12:14:51"^^ . "==R2D2 - RDF to Database too==\nThe Semantic Web aims at giving data more structure and computer understandable meaning. For that ((http://www.w3.org/RDF/ RDF)) enables to add metadata to the unmanageable mass of data in the World Wide Web. Hence, the transformation of data located in relational databases to RDF plays an essential role. To provide such functionality our implementation R2D2 maps an RDF query to a legacy relational database without having to replicate the data. \n\nR2D2 is be implemented in PHP and uses the ((http://www.wiwiss.fu-berlin.de/suhl/bizer/rdfapi/ RDF API for PHP (RAP) )) for querying a virtual R2D2-Graph. An R2D2-Graph is read only and may be used like other models in RAP by instantiating a new model named R2D2model. An R2D2model rewrites find(spo) and sparql() queries to SQL queries and transforms the SQL result set back into RDF triples. A database schema is mapped by the ((http://www.wiwiss.fu-berlin.de/suhl/bizer/d2rq/spec/index.htm D2RQ Mapping Language)) - a declarative mapping language for describing the relation between an ontology and an relational data model.\n\n**R2D2 supports:**\n * querying a non-RDF database using ((http://www.w3.org/TR/rdf-sparql-query/ SPARQL)) or find(spo).\n * publishing the content of a non-RDF database in RDF using the RAP ((http://www.wiwiss.fu-berlin.de/suhl/bizer/rdfapi/tutorial/netapi.html NetAPI)).\n * automatic generation of a mapping file for any database so you can query it in RDF\n\n**Detailed information:**\n * R2D2 user manual (soon here - see below for a simple example)\n * Benchmark results in comparison to the RAP database backend (soon here)\n * R2D2 PHPDocs (soon here)\n * ((http://www.wiwiss.fu-berlin.de/suhl/bizer/d2rq/spec/index.htm D2RQ Language Specification)) for creating a mapping file\n\n===News===\n * 08/20/2006: currently we implement a plug-in for the ((www.wordpress.org WordPress)) blog system. This first practical example will integrate header information in a wordpress post for the FOAF, SIOC and ATOM vocabulary. The header will contain a sparql-search-query so you can query a model through the PHP NetAPI from other web applications\n\n===Download===\nThe current version is available at Sourceforge-CVS, click ((http://powl.cvs.sourceforge.net/powl/r2d2/ here)).\n\n===History===\n#|\n|| Version | Comment | Date ||\n|| V0.1 | first version of R2D2 | 01.10.2006 || \n|#\n\n**R2D2 Developers**\n * Christian Lehmann (Mail: ((mailto:Lehmann.Christian@gmx.net Lehmann.Christian@gmx.net)))\n\n**Thanks to**\n * Sebastian Dietzold for his great ideas and support\n * Sören Auer for making all this possible\n * the D2RQ Developers for the base implementation and the D2RQ Mapping language\n * the RAP Developers for the API\n\n\n===Installation and Use===\nR2D2 is a RAP PlugIn. So first, you need to download RAP.\nFor installing R2D2 you simple have to copy the R2D2 directory into the main RAP folder.\n\nSome example scipts are stored in folder testR2D2. You can copy this folder into the main RAP folder, too. After this you can use them with your mapping files .\nTo include R2D2 you have to add the class R2D2Model (in R2D2/R2D2Model.php) into RAP. After this you are able to create a new virtual RDF-graph by \n$model = new R2D2Model($mapFile). \n\nA map is represented as an RDF-graph. So if you want the RAP database to manage your map you can copy a map to RAP by RAP-methods.\nMaps that are stored in RAP are used my $model = new R2D2DbModel($db,$modelName). \n\nFor more information check the manual (coming soon).\n\n===Example===\nThis short examle script shows how user information in a ((http://wordpress.org/ WordPress)) is mapped to the FOAF vocabulary.\n\n * Mapping file: file:wordpressd2rq.n3\n * Database dump: file:wordpressMySQL.sql (MySQL database)\n * foaf vocabulary: ((http://xmlns.com/foaf/0.1/ foaf-specification))\n * find(spo) results of different queries against the database: TestFind.txt\n * SPARQL results of queries against the database: TestRDQL.txt\n\nExample Query: Find all user names\n\n%%(php)\nenableDebug();\n\n$s = null;\n$p = new Resource('http://xmlns.com/foaf/0.1/name');\n$o = null;\n\n$result = find($s,$p,$o);\n\n// the same in SPARQL\n\n$sparqlQuery = \"PREFIX foaf: \nSELECT DISTINCT ?resource ?name WHERE {\n ?resource foaf:name ?name .\n} ORDER BY ?name\";\n\n$result = $R2D2Model->sparqlQuery($sparqlQuery);\nSparqlEngine::writeQueryResultAsHtmlTable($result);\n?>\n%%\n\nUsing these parts of the D2RQ map\n\n%%\n:CMUser rdf:type d2rq:ClassMap; \n d2rq:class foaf:Person;\n d2rq:uriPattern \"//data#user@@wp_users.ID@@\";\n d2rq:dataStorage :database;\n .\n\n:UserDisplayName rdf:type d2rq:DatatypePropertyBridge;\n d2rq:property foaf:name;\n d2rq:column \"wp_users.display_name\";\n d2rq:belongsToClassMap :CMUser;\n%% .\n\nboth find and sparql query will be translated into following SQL command:\n\n%%(sql)\nSELECT wp_users.ID, wp_users.display_name FROM wp_users\n%%\n\nthe result set may contain following lines:\n\n#|\n|| wp_users.ID | wp_users.display_name ||\n|| 1001 | Christian Lehmann ||\n|| 1002 | Bob Wheeler ||\n|#\n\nand is translated into the RDF result triple:\n\n\n#|\n|| Subject | //data#user1001||\n|| Predicate| http://xmlns.com/foaf/0.1/name||\n|| Object| Christian Lehmann||\n|#\n\n\n#|\n|| Subject | //data#user1002||\n|| Predicate| http://xmlns.com/foaf/0.1/name||\n|| Object| Bob Wheeler||\n|#\n\n===Known Issues===\n * R2D2 implements a new SPARQL2SQL rewriter. This feature is still in progress and buggy. Up to now only group patterns are supported! (for more information see the ((http://aksw.informatik.uni-leipzig.de/Projects/R2D2/SPARQLquerycatalog SPARQL complexity catalog)) (german version)\n * Regular expressions in find(spo) or SPARQL are not yet supported." . . . . "2008-05-06T17:40:05"^^ . "{{Include page=\"/Projects/Box\" divclass=\"floatbox\" nomark=\"1\"}}\n==Projects==\n\nAKSW started a number of high impact R&D projects.\n\n<##>\n===~SoftWiki===\n((http://softwiki.de SoftWiki)) - Distributed, End-user Centered Requirements Engineering for Evolutionary Software Development\n//National research project, funded by the German Federal Ministry of Education and Research, part of the// ((http://www.softwarefoerderung.de/ research initiative “Software Engineering 2006”))\n\n<##>\n===~OntoWiki===\n((Projects/OntoWiki OntoWiki)) a semantic collaboration platform implementing the Web 2.0 idea of an architecture of participation for the collaborative development of Semantic Web knowledge bases. OntoWiki is implemented as an alternative user-interface for Powl and included in the latest Powl distribution.\n\n**Impact:** ((http://sourceforge.net/project/stats/?group_id=99425&ugn=powl&type=&mode=year more than 8.000 downloads of the OntoWiki software (since 2004) / 773 in Sep 2007)), on average 3.000 monthly visitors of http://Ontowiki.net, broad variety of industrial and academic users.\n\n<##>\n===Triplify===\n((http://triplify.org Triplify)) tackles the chicken-and-egg problem of the Semantic Web by providing a building block for the \"semantification\" of Web applications. Triplify provides small, light-weight plugins for database backed Web applications and exposes semantics as RDF, Linked Data and JSON.\n\n===Cofundos===\n((http://Cofundos.org Cofundos.org)) - is a platform for community innovation and funding of open-source software: many individual donations and contributions are pooled together in order to realize bright software ideas.\n\n**Impact:** more than 10.000 visitors in Oct 2007, ((http://technorati.com/search/cofundos?authority=n&language=n 62 Blog posts (according to Technorati))), Cofundos news announcements in major news channels (e.g. ((http://www.heise.de/newsticker/meldung/97846 Heise.de)), ((http://www.golem.de/0710/55592.html Golem.de)), ((http://www.linux.com/feed/119980 Linux.com))), more than 300 registered users, more than 5k<#€#> pledged donations in Oct 2007.\n\n<##>\n===DBpedia===\n((Projects/dbpedia DBpedia)) is a community effort to extract structured information from Wikipedia and to make this information available on the Web. DBpedia allows you to ask sophisticated queries against Wikipedia and to link other datasets on the Web to Wikipedia data.\n\n**Impact:** ((http://technorati.com/search/dbpedia 300 posts about DBpedia in the Blogosphere (according to Technorati))), ca. 100.000 visitors of the DBpedia website in 2007, on average 350 daily visitors. DBpedia became the most popular dataset used with Semantic Web applications and research prototypes.\n\n<##>\n===DL-Learner===\n((Projects/DL-Learner DL-Learner)) is a tool for learning concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. The goal of DL-Learner is to support knowledge engineers in constructing knowledge and learning about the data they created.\n\n===Pediax===\n((http://en.pediax.org Pediax)) is a Wikipedia browser/mirror consequently exploiting Web 2.0 technologies such as AJAX for an enhanced user experience. Pediax also includes a geo-browsing mashup, which displays 60.000 geo-referenced Wikipedia articles on a world map. Pediax is currently visited over 50.000 times per month and will serve as a showcase for the semantic Wikipedia extraction.\n\n<##>\n===xOperator===\n((Projects/xOperator xOperator)) combines advantages of social network websites with instant messaging. It tries to be a semantic agent for xmpp / jabber network which finds and shares content about resources (using RDF/SPARQL) for you and your jabber friends.\n\n===Powl==\n((Projects/Powl Powl)) is a Semantic Web application development framework featuring a comprehensive API for handling RDF, RDFS and OWL, a library of semantic widgets and a web based user interface. Powl is implemented for the most widely deployed web application environment: PHP and MySQL. Powl was downloaded over 3.000 times and has an active developer and user community.\n" . . . . "2007-03-13T17:35:17"^^ . "==Powl - Semantic Web Development Plattform==\n<##>\n===Overview===\nThe broad application of ontologies as shared terminological knowledge representations is one of the main strategies of the Semantic Web paradigm. With ((http://www.w3.org/RDF/ RDF/S)) (Resource Description Framework) and ((http://www.w3.org/2004/OWL/ OWL)) (Web Ontology Language) there exist W3C standards for defining web enabled ontologies which fit in the semantic layering of web languages.\n\nAlthough there is a bunch of OWL ontology editing and management solutions available, some of them are complicated to deploy or handle, some do not support strategies for collaborative, distributed development of ontologies, some are not Open Source or not available for the most distributed web technologies.\n\nSince ((http://www.php.net/ PHP)) is by far the most distributed web development technology (as regularly confirmed by ((http://www.netcraft.com/ Netcraft))), the Semantic Web paradigm will probably only be successful in a large scale if there are applications and tools available tightly interacting with this language. The aim of the Powl project is thus to deliver a PHP and web-based ontology edititing and management solution to the OpenSoure community.\n\n===Architecture===\n\nPowl consists of the following components:\n * RAP - RDF API for PHP an independent project by Chris Bizer, Radoslaw Oldakowski and others (thanks here for their great work)\n * RDFS and OWL API for PHP - integral part of Powl\n * Powl Webapplication framework:\n * Tabplugins, as Models, RDF-Triples, Classes, Properties, Instances - future releases may include e.g. export or visualisation plugins\n * Widgetplugins for data editing - widgets for comfortable editing of WYSIWIG-HTML, Dates, Tree-Selects are planned\n\nPowl requires a PHP (greater 5.0.1) enabled webserver and a database backend for storing model data (MySQL, Postgres, Oracle and others - see ADODB Documentation for supported RDBMS).\n\nPlease have a look at the planned Powl architecture description for details.\n\n===Features===\n\n * Powl supports viewing, editing of RDFS/OWL ontologies of arbitrary size. It is even quite fast with the largest available models (e.g. NCI Cancer Ontology containing about 28,000 classes).\n * Sophisticated widgets for data editing such as widgets for editing HTML in a WYSIWIG manner or for dates are integrated.\n * Questioning the knowledge base. Powl currently offers an RDQL query builder as well as a full-text search for literals and resources.\n * Plugin concept. Powl is easy extensible, unfortunately still laking exhaustive documentation on this - please have a look at the source code and pester the developers. :-)\n * Powerful object oriented API. All functionality is accessible by a clean application programming interface.\n * Authentification scheme. Fine grained exposition of features and model data: Privileges (view, edit) for users and groups are planned to be assigned to Models, Classes and Properties.\n * Versioning. All edits of a knowledge base may be logged and rolled back (depending on time, user and edit action).\n * Powl is fast. Models are stored in database tables and only those parts of the model are loaded into main memory which are actually needed. Thus Powl is scalable and fast.\n * Multi language support. Powl comes with English and German translations of the user interface. If you would like to provide a translation please contact us!\n\nYou miss a feature? Please submit a feature request at the ((http://sourceforge.net/projects/powl Sourceforge Project Page))." . . . . "2008-07-25T15:15:06"^^ . "==Contact==\nPlease send emails to ((mailto:aksw@informatik.uni-leipzig.de aksw@informatik.uni-leipzig.de)).\n\n==Team==\n{{vcard name=\"sn\" value=\"Auer\"}}\n{{vcard name=\"sn\" value=\"Dietzold\"}}\n{{vcard name=\"cn\" value=\"Jens Lehmann\"}}\n{{vcard name=\"sn\" value=\"Riechert\"}}\n{{vcard name=\"sn\" value=\"Berger\"}}\n{{vcard name=\"sn\" value=\"Ngonga Ngomo\"}}\n{{vcard name=\"sn\" value=\"Martin\"}}\n{{vcard name=\"sn\" value=\"Hellmann\"}}\n\n==Student Assistents==\nPhilipp Frischmuth\nNorman Heino\nChristoph Riess\nJulian Jöris\n\n==Bachelor / Master Students==\n((/JiaXie Jia Xie)) - Market potential of the Semantic Web Technologies ((/JiaXie Workpage))\nKristian Völpel - Design and implementation of an RDF-template language\nChristian Weiske - Efficient database implementation and enhancements for SPARQL\nJörg Schüppel - Extraction of semantic from Wikipedia\nJoachim Bachmann - Elastic Web Application Cloud on the basis of AWS EC2\nAnke Gonschorreck - Partial translation of Wikipedia categories into OWL classes\nSebastian Hellmann - Comparison and benchmarking of DL-Learning approaches\nJan Fienhold - Tagging on e-learning objects by advanced e-learning communities ((/JanFienhold Workpage))\nLeszek Kotas - development environment on Eclipse for PHP, UML, CVS, Unit-Test ((/LeszekKotas Workpage))\nGerrit Mattausch - Implementation of a social network on the semantic-requirements-model ((/GerritMattausch Workpage))\nKatrin Baasch - Implementation of the Softwiki use-case: citizen office ((/KatrinBaasch Workpage))\nFriederike Bulka - Leipzig-Professors-Ontology in co-operation with the ((http://www.uni-leipzig.de/~historik/ historical seminar))\nLydia Steiner - Leipzig-Professors-Ontology\nThorsten Berger - Domain Requirements Engineering ((http://bis.informatik.uni-leipzig.de/de/Abschlussarbeiten/2006/ThorstenBerger Workpage))\nChen Yue - Ausnutzung von Mehrsprachigkeit für die DBpedia Infobox Extraktion ((/ChenYue Workpage))\n\n==Alumni==\n{{vcard name=\"sn\" value=\"Aslam\"}}" . . . . "2007-10-30T16:50:12"^^ . "{{Include page=\"/Projects/OntoWiki/Teaser\" nomark=\"1\"}}\n===News==={{a name=\"News\"}}\n\n{{cofundos tag=\"OntoWiki\" divclass=\"floatbox\"}}\n{{feed title=no divclass=\"afloatbox\" url=\"http://blog.aksw.org/feed/?cat=5\" max=\"2\"}}\n\n<#
#>\n\n===Overview==={{a name=\"Overview\"}}\n<##>\n~OntoWiki is a tool providing support for agile, distributed knowledge engineering scenarios. ~OntoWiki facilitates the visual presentation of a knowledge base as an information map, with different views on instance data. It enables intuitive authoring of semantic content, with an inline editing mode for editing RDF content, similar to WYSIWIG for text documents. It fosters social collaboration aspects by keeping track of changes, allowing to comment and discuss every single part of a knowledge base, enabling to rate and measure the popularity of content and honoring the activity of users.\n~OntoWiki enhances the browsing and retrieval by offering semantic enhanced search strategies. All these techniques are applied with the ultimate goal of decreasing the entrance barrier for projects and domain experts to collaborate using semantic technologies. In the spirit of the Web 2.0 ~OntoWiki implements an \"architecture of participation\" that allows users to add value to the application as they use it.\n\n===Publications==={{a name=\"Publications\"}}\nAuer, S.; Dietzold, S.; Riechert, T.: ((http://www.informatik.uni-leipzig.de/~auer/publication/ontowiki.pdf OntoWiki - A Tool for Social, Semantic Collaboration)). 5th International Semantic Web Conference, Nov 5th-9th, Athens, GA, USA. In I. Cruz et al. (Eds.): ISWC 2006, LNCS 4273, pp. 736–749, 2006.\nSpringer-Verlag Berlin Heidelberg 2006.\n\nDietzold, S.; Auer, S.; Riechert, T.: ((http://www.informatik.uni-leipzig.de/~auer/publication/WissensarbeitMitOntoWiki.pdf Kollaborative Wissensarbeit mit OntoWiki Workshop)). Bildung von Sozialen Netzwerken in Anwendungen der \"Social Software\", 6. 10. 2006, Dresden, Germany. In Christian Hochberger and Rüdiger Liskowsky, INFORMATIK 2006 -- Informatik für Menschen!, volume P-93 of GI-Edition - Lecture Notes in Informatics (LNI), pp. 112--119. Bonner Köllen Verlag, 2006. ISBN: 978-3-88579-187-4, ISSN: 1617-5468" . . . . "2006-12-04T15:08:08"^^ . "===Komplexitätskatalog von SPARQL-Anfragen===\n\nDer folgende Anfragekatalog zeigt SPARQL-Beispielanfragen steigender Komplexität, beginnend\nmit mit einer einfachen Anfrage. Die Komplexität wird hierbei durch den nötigen Transformationsaufwand\neine SPARQL-Anfrage in eine SQL-Anfrage gemessen. Weiterhin wird der Transformationsaufwand\nnicht an einer Umwandlung einer SPARQL-Anfrage auf eine einzige Tabelle mit RDF-Informationen\n(beispielsweise eine Tabelle mit den Spalten Subject, Predicate, Object) gemessen,\nsondern auf mehrere Tabelle, die Informationen enthalten können.\n\nDie hier aufgezeigten Beispiele nutzen standardmäßig jeweils den foaf- bzw. atom-Namensraum\n(, ), welcher der Einfachheit halber\nin einer Anfrage nicht per PREFIX-Definition festgelegt wird.\n\nSPARQL-Anfragen werden mittels Graph Patterns ausgedrückt. Diese können aus einem Basic Graph\nPattern (Zusammenstellung eines Triple Patterns), Group Graph Pattern (Verknüpfung mehrere\nGraph Patterns), Value Constraints (Werteinschränung), Optional Graph Pattern (optionale Graph\nPatterns), Union Graph Pattern (Vereinigung von Graph Patterns) und RDF Dataset Graph Pattern\n(Graph Patterns einzelner RDF-Datensätze) bestehen.\n\nDer nachfolgende Katalog zeigt keinesweg die vollständige Nutzung sämtlicher in der SPARQL-Spezifikation\ndefinierten Konstrukte, sondern soll lediglich Aufschluss über mögliche Komplexitätssteigerungen\ngeben.\n\n1. Basic Graph Pattern\n SELECT ?x WHERE\n { ?x foaf:name \"Christian Lehmann\" .}\n\n2. dto.\n SELECT ?x ?predicate WHERE\n { ?x ?predicate \"value\" .}\n\n3. dto.\n SELECT ?s ?p ?o WHERE\n { ?s ?p ?o .}\n\n4. dto.\n SELECT ?x WHERE\n { ?x ?foaf:name \"Christian Lehmann\" .} ORDER BY ?x\n bzw.\n SELECT DISTINCT ?x WHERE\n { ?x ?foaf:name \"Christian Lehmann\" .} LIMIT \"50\"\n\n5. Group Graph Pattern\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n ?y foaf:mail ?mail.}\n\n6. dto.\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n ?x foaf:mail ?mail. }\n\n7. dto.\n SELECT ?name ?mbox WHERE\n {?chris foaf:name \"Christian Lehmann\".\n ?chris foaf:knows ?friend .\n ?friend foaf:mbox ?mbox .\n ?friend foaf:name ?name .\n }\n\n8. Group Graph Pattern + Value Contraints\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n FILTER (?name = \"Christian Lehmann\").\n ?x foaf:mail ?mail. }\n\n9. Union Graph Pattern\n SELECT ?name ?mail WHERE\n { {?x foaf:name ?name. }\n UNION\n {?x atom:author ?name.}\n }\n10. Union Graph Pattern + Group Graph Pattern\n SELECT ?name ?mail WHERE\n { {?x foaf:name ?name. ?x foaf:mail ?mail.}\n UNION\n {?x atom:author ?name. ?x atom:email ?mail.}\n }\n\n11. Optional Graph Pattern\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n OPTIONAL{ ?x foaf:mail ?mail.}\n }\n\n12. Optional Graph Pattern + Value Constraint\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n OPTIONAL{ ?x foaf:mail ?mail.}\n FILTER {?mail = \"mail@mail.de\"} \n }\n\n13. Optional Graph Pattern\n SELECT ?name ?mail WHERE\n { ?x foaf:name ?name.\n OPTIONAL { ?x foaf:mail ?mail.}\n OPTIONAL {?x foaf:givenname ?gname\n OPTIONAL {?x foaf:homepage ?hp.}\n }\n }\n\n14. RDF Dataset Graph Pattern\n SELECT ?src ?nick WHERE\n {\n GRAPH ?src\n {?x foaf:nick \"bob\".}\n }\n\n15. dto.\n SELECT ?src ?nick WHERE\n {\n GRAPH ?src\n {?x foaf:nick ?nick .\n ?x foaf:name \"Bob Wheeler\" .}\n }\n\n16. dto.\n PREFIX data: . . . "2007-03-10T14:54:49"^^ . "==~SoftWiki - Distributed, End-user Centered Requirements Engineering for Evolutionary Software Development==\n<##>The aim of the cooperative research project ~SoftWiki is to support the collaboration of all stakeholders in software development processes in particular with respect to software requirements. Potentially very large and spatially distributed user groups shall be enabled to collect, semantically enrich, classify and aggregate software requirements. The solution will be founded on the Semantic Web standards for terminological knowledge representation. The implementation will base on generic means of semantic collaboration using next generation Web user interfaces (in the spirit of Social Software and the Web 2.0) thus fostering completely new means of Requirements Engineering with very large user groups. \n\n((http://softwiki.de The official web site of the project consortium))\n\n//National research project, funded by the German Federal Ministry of Education and Research, part of the// ((http://www.bmbf.de/foerderungen/3326.php research initiative “Software Engineering 2006”))\n\nhttp://www.bmbf.de/_img/common/bmbf_logo.gif" . . . . "2007-09-03T18:16:31"^^ . "==Thomas Riechert==\n\n{{vcard name=\"sn\" value=\"Riechert\"}}\n\n\n\n((!/workspace Workspace))" . . . . "2007-01-18T16:27:35"^^ . "==WASWIE - Network==" . . . . "2008-03-16T21:50:04"^^ . "==DBpedia - Querying Wikipedia like a Semantic Database==\n{{feed title=\"Latest dbpedia news\" divclass=\"floatbox\" url=\"http://blog.aksw.org/feed/?cat=6\" max=\"5\"}}\n<##>\n===Overview===\nDo you know all mayors from towns elevated higher than 1000m, all sitcoms set in New York, or all philosophers that were influenced by Friedrich Nietzsche?\n\nWikipedia contains information required for answering such questions, but has the problem that its constricted search capabilities only allow very limited access to this valuable knowledge-base. The Semantic Web still lacks a critical mass of RDF data online and up-to-date terms and ontologies are missing for many application domains.\n\nThe dbpedia.org project approaches both problems by extracting structured information from Wikipedia and by making this information available on the Web. dbpedia.org allows you to ask sophisticated queries against Wikipedia (like the ones mentioned above) and to link other datasets on the Web to dbpedia data.\n\n===Features===\n<##>\ndbpedia.org features at the moment:\n\n * two large extracted datasets for different purposes\n * a SPARQL endpoint and a data browser\n * a visual query builder available at: http://wikipedia.aksw.org\n\nMore information about the project can be found at: ((http://dbpedia.org))\n\n===Publications===\n\nAuer, S. and Lehmann, J., ((http://www.informatik.uni-leipzig.de/~auer/publication/ExtractingSemantics.pdf What have Innsbruck and Leipzig in common? Extracting semantics from wiki content.)) In: Franconi, E., Kifer, M., May, W. (Eds.), Proceedings of the 4th European Semantic Web Conference (ESWC)." . . . . "2007-02-13T21:45:53"^^ . "==Seminarbericht Entwicklung von Computerspielen==\nThomas Riechert\n\nEgal, ob es sich um um Spiele, Betriebssysteme oder Anwendungssysteme handelt, die Entwicklung von Software ist ein umfassender und komplexer Prozess. Aus diesem Grund widmet sich die Disziplin des Software-Engineerings der ingenieurmäßigen und durchgängigen Unterstützung des Entwicklungsvorgangs mit Hilfe geeigneter Vorgehensweisen,\nMethoden und Werkzeuge. Wenngleich eine Vielzahl von Gemeinsamkeiten existiert, können sich Spezifika im Entwicklungsprozess je nach Art der geplanten Software unterscheiden. Es wurden daher im Rahmen des Games Summercamps die speziellen Anforderungen, die sich für die Entwicklung von Spielen ergeben, untersucht.\n\nEine mögliche Herangehensweise an diese Thematik war die Aufteilung der Arbeiten in die verschiedenen Software-Entwicklungsphasen [((#Ba96))]:\n\n * Anforderungsanalyse\n * Modellierung\n * Architekturkonzepten\n * Implementierung\n * Einführung\n * Wartung und Pflege\n\nZiel dieser Aufteilung war die Schaffung eines Überblicks über den gesamten Entwicklungsprozess. Die Arbeitsgruppe „Agile Knowledgement and Semantic Web“ [((#AKSW))] am Institut für Informatik, welche das Seminarthema betreute, hat einen Forschungsschwerpunkt im anwenderorientiertem, stark verteiltem Anforderungsmanagement mit Fokus auf Endbenutzer Interaktion und Plattformstrategie. Die Entwicklung von Spielen ist eine Anwendungsdomäne der gegenwärtigen Forschung und zeichnet sich insbesondere durch folgende Eigenschaften aus:\n\n * eine große Anzahl von Stakeholdern bei der Erhebung von Anforderungen,\n * überwiegend IT- unterstütze Dokumentation,\n * umfangreiche Endbenutzertests, sowie\n * kurze Entwicklungszyklen\n\nErreicht wird dies vor allem durch plattformgestützte Entwicklung und die Einbeziehung große Nutzergemeinschaften (Communities).\n\nIm Rahmen eines vom Bundesministerium für Forschung und Bildung geförderten Verbundprojektes SoftWiki wurden die Anforderungsanalyse, Einführung, Wartung und Pflege als die Phasen im Software-Entwicklungsprozess definiert, die eine Interaktion mit dem Endanwender bzw. Benutzer erfordern [((#ARI06))].\n\nDarauf aufbauend wurden folgende Themen innerhalb des Seminars vergeben, von denen zwei als Beitrag in diesem Buch vertreten sind.\n\n * Lebenszyklusmodelle (Autor: Jun Xie)\n * Architekturen (Autor: Hannes Niederhausen)\n * Werkzeuge und Entwicklungsplattformen (Autor: Jörn Hoffmann)\n * Requirements-Engineering (Autor: Sebastian Knappe)\n * Qualitätsmanagement (Autor: Paul Schöber)\n\n\n-----------\nAn dieser Stelle kann die Einführung enden!\n-----------\n\n\nDas folgende Kapitel gibt einen Überblick über die Ergebnisse der einzelnen thematischen Arbeiten.\n\n\n====Überblick über die thematischen Arbeiten====\n\n=====1. Lebenszyklusmodelle=====\nAutor: Jun Xie\n\n=====2. Architekturen=====\nAutor: Hannes Niederhausen\n\n\n=====3. Werkzeuge und Entwicklungsplattformen (Jörn Hoffmann)=====\nAutor: Jörn Hoffmann\n\n\n=====4. Requirements-Engineering=====\nAutor: Sebastian Knappe\n\n=====5. Qualitätsmanagement=====\nAutor: Paul Schöber\n\n\n====Ausblick====\n\n\n-----------\n{{a name=\"Ba96\"}} [Ba96]\nBalzert, H.: Lehrbuch der Software-Technik: Teil 1: Software-Entwicklung. Spektrum Akademischer Verlag 1996, Heidelberg, Germany.\n{{a name=\"AKSW\"}} [AKSW]\nhttp://aksw.informatik.uni-leipzig.de\n{{a name=\"ARF06\"}} [ARF06]\nAuer, S.; Riechert, T.; Fähnrich, K.-P.: SoftWiki – Agiles Requirements-Engineering für Softwareprojekte mit einer großen Anzahl verteilter Stakeholder. Ge Ne Me' 06 – Gemeinschaft in neuen Medien, 29. Sep. 2006, Dresden, Germany." . . . . "2008-02-19T10:33:04"^^ . "<#\n
\n

DL-Learner

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is a tool for supervised Machine Learning in OWL and Description Logics.

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The DL-Learner software learns concepts in Description Logics (DLs) from user-provided examples. Equivalently, it can be used to learn classes in OWL ontologies from selected objects. It extends Inductive Logic Programming to Descriptions Logics and the Semantic Web. The goal of DL-Learner is to provide a DL/OWL based machine learning tool to solve supervised learnings tasks and support knowledge engineers in constructing knowledge and learning about the data they created.

\n

Download DL-Learner

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\n
\n{{Include page=\"/Projects/DLLearner/Menu\" nomark=\"1\"}}\n
\n
\n#>\n\n{{a name=\"News\"}}\n{{cofundos tag=\"DL-Learner\" divclass=\"floatbox\"}}\n{{feed title=\"News\" divclass=\"box\" url=\"http://blog.aksw.org/feed/?cat=10\" max=\"4\"}}\n\n" . . . . "2008-01-09T12:25:24"^^ . "{{Include page=\"/Projects/DLLearner/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==Features==\nFeatures of DL-Learner:\n * implements different algorithms:\n * a refinement operator based algorith\n * a genetic programming algorithm\n * a hybrid algorithm using genetic refinement operators\n * (random learning, brute force learning)\n * supports different kinds of learning problems:\n * learning concept definitions and inclusion axioms\n * learning from positive and negative examples as well as only from positive examples\n * supports different input formats:\n * OWL files\n * N-triple files\n * internal representation in config files\n * SPARQL endpoints \n * different reasoner adapters:\n * DIG interface: allows all major reasoners\n * OWL API interface (alpha): ~FaCT++, Pellet\n * KAON2: direct Java API access (may be removed in the future, because KAON2 is not open source)\n * different user interfaces:\n * command line\n * web service\n * planned: PHP client\n * planned: Java Swing based GUI\n * easily extensible through a component model\n * 4 types of components: knowledge sources, reasoners, learning problems, learning algorithms\n * to implement a new component of one of the above types you only have to extend the correct class in org.dllearner.core and add the name of your file to the components.ini file\n * allows a wide range of configuration options" . . . . "2007-08-23T17:23:56"^^ . "{{Include page=\"/Projects/DLLearner/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==Screenshots==\n(click to enlarge)\n\n===PHP Client===\n1. startup screen of the client\n<#
#>\n\n2. client after loading an ontology with a tooltip\n<#
#>\n\n\n3. shows a learned definition for the chosen examples\n<#
#>\n\n===Command Line===\n1. the command line interface after succesfully learning a concept\n<#
#>\n" . . . . "2007-08-23T19:55:32"^^ . "{{Include page=\"/Projects/DLLearner/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==Demo==\n\nWe are currently in the process of developing a web service module for DL-Learner, which makes it possible to implement a web demo. You will find the link pointing to the web demo here, once it is available." . . . . "2008-05-21T19:33:12"^^ . "{{Include page=\"/Projects/DLLearner/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==First Steps==\n\n * make sure you have a DIG reasoner running at http:~//localhost:8081 (or on the URL you set for the DIG reasoner)\n * run the father example:\n * ./dllearner examples/father.conf in Linux and other systems\n * dllearner.bat examples/father.conf in Windows\n * if you see Male AND EXISTS hasChild.TOP as solution the DL-Learner is working\n * make yourself familiar with the syntax of the configuration files (see provided README) use the graphical interface" . . . . "2008-05-21T19:31:29"^^ . "{{Include page=\"/Projects/DLLearner/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==Installation==\n * ((http://www.java.com Java)) version 6 or higher needs to be installed\n * //optional:// download and install a DIG compatible reasoner like Pellet, ~FaCT, Racer Pro, and ~KAON2 (see ((ReasonerInstallation Reasoner Installation)) for details) - you can also use the OWL API reasoner interface, which uses Pellet by default and doesn't require any further download\n * download ((http://sourceforge.net/project/showfiles.php?group_id=203619 DL-Learner))\n * extract DL-Learner\n * run dllearner.bat (Windows) or dllearner (other systems), no further installation is necessary\n * more infos can be found in the DL-Learner README and INSTALL files\n\nFor instructions on installing the DL-Learner web service, see the wiki page on ((WebServiceInstallation Web Service Installation))." . . . . "2008-03-15T15:32:53"^^ . "==Publications==\n{{Toc}}\n\n===Talks / Presentations===\n\n**OntoWiki – creating the Web 3.0.** Open Source Meets Business Congress, Nürnberg, 22. January 2008.\n\n**DBpedia: A Nucleus for a Web of Open Data.** Presentation at 6th International Semantic Web Conference, ((http://videolectures.net/iswc07_soeren_nwo/ Video at Videolectures.net)).\n\n**Semantic Wiki Representations for Building an Enterprise Knowledge Base.** Reasoning Web Summer School, Dresden, 6. November 2007.\n\n((http://sites.wiwiss.fu-berlin.de/suhl/bizer/pub/Bizer-etal-WWW2007-DBpedia-Talk.pdf DBpedia.org - Querying Wikipedia like a Database.)) ((http://www2007.org/prog-Developers.php Developers track)) at 16th International World Wide Web Conference (WWW2007), Banff, Canada, May 2007.\n\n**OntoWiki - A Tool for Social, Semantic Collaboration.** Presentation at 5th International Semantic Web Conference, ((http://videolectures.net/iswc06_auer_otssc/ Video at Videolectures.net)).\n\n**~SoftWiki - Web 2.0 meets Software-Engineering.** 10. November 2006, Stuttgarter Softwaretechnik Forum\n\n**Agiles Requirements Engineering and Social Semantic Collaboration.**18. Oktober 2006, Versicherungsforen Leipzig\n\n**~SoftWiki - Agiles Requirements-Engineering für Softwareprojekte mit einer großen Anzahl verteilter Stakeholder.** Statuskonferenz Forschungsoffensive \"Software Engineering 2006\", 26.-28. Juni 2006, Leipzig. ((http://softwiki.de/files/folien_SOFT-WIKI.pdf Slides as PDF))\n\n===Books, Proceedings===\n**Auer, S.; Bizer, C.; Müller, C.; Zhdanova, A. V. (Eds.):**\n((http://aksw.org/cssw-proceedings The Social Semantic Web 2007. Proceedings of the 1st Conference on Social Semantic Web (CSSW))). September 26-28, 2007, Leipzig, Germany. Lecture Notes in Informatics (LNI), ISBN: 978-3-88579-207-9, ISSN: 1617-5468\n\n**Auer, S.; Bizer, C.; Heath; T.; Grimmnes, G. A. (eds.):**\nProc. of Scripting for the Semantic Web Workshop at the ESWC, Innsbruck, Austria, May 30, 2007, CEUR Workshop Proceedings, ISSN 1613-0073, online ((http://CEUR-WS.org/Vol-248/ CEUR-WS.org/Vol-248/)).\n\n**Auer, S.:**\nTowards Agile Knowledge Engineering: Methodology, Concepts and Applications. Dissertation an der Fakultät für Mathematik und Informatik der Universität Leipzig. Leipziger Beiträge zur Informatik: Band VII. Leipzig: 2007. ISBN: 978–3-934178–73-1\n\n**Auer, S.; Bizer, C.; Miller; L. (eds.):**\nScripting for the Semantic Web 2006. Proc. of ESWC'06 Workshop on Scripting for the Semantic Web (SFSW'05), Budva, Montenegro, June 12, 2006, CEUR Workshop Proceedings, ISSN 1613-0073, online ((http://CEUR-WS.org/Vol-181 CEUR-WS.org/Vol-181)).\n\n**Völkel, M.; Schaffert, S.; Pasaru-Bontas, E.; Auer, S.:**\nWiki-based knowledge engineering: second workshop on semantic Wikis. 133-134 in Dirk Riehle, James Noble (Eds.): Proceedings of the 2006 International Symposium on Wikis, 2006, Odense, Denmark, August 21-23, 2006. ACM 2006, ISBN 1-59593-413-8\n\n**Decker, S.; Park, J.; Sauermann, L.; Auer, S.; Handschuh, S.:**\nProceedings of the Semantic Desktop and Social Semantic Collaboration Workshop (SemDesk 2006) located at 5th International Semantic Web Conference ISWC 2005, 6th November 2006, Athens, GA, USA, CEUR Workshop Proceedings, ISSN 1613-0073, online ((http://CEUR-WS.org/Vol-202 CEUR-WS.org/Vol-202)).\n\n**Auer, S.; Bizer, C.; Miller; L. (eds.):**\nScripting for the Semantic Web 2005. Proc. 1st Intl. Workshop Scripting for the Semantic Web (SFSW'05), Hersonissos, Greece, May 30, 2005, CEUR Workshop Proceedings, ISSN 1613-0073, online ((http://CEUR-WS.org/Vol-135/ CEUR-WS.org/Vol-135/)).\n\n===Articles===\n**Ahtisham, A.; Auer, S.; Shen, J.; Fähnrich, K.:**\nBridging the Semantic Gap Between Business Processes and Semantic Web Services. Journal of Internet Technologies, Taiwan, ISSN: 1607-9264.\n\n**Ahtisham, A.; Shen, J.; Auer, S.; Hermann, M.:**\nAn Integration Life Cycle for Semantic Web Services Composition. Proceedings of the 11th International Conference on Computer Supported Cooperative Work in Design (CSCWD 07), April 26-28, 2007, Melbourne, Australia, ISBN: 1-4244-0962-4, pp. 490-496.\n\n**Auer, S.; Bizer, C.; Lehmann, J.; Kobilarov, G.; Cyganiak, R.; Ives, Z.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/dbpedia.pdf DBpedia: A Nucleus for a Web of Open Data.)) In Aberer et al. (Eds.): The Semantic Web, 6th International Semantic Web Conference, 2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007, Busan, Korea, November 11-15, 2007. Lecture Notes in Computer Science 4825 Springer 2007, ISBN 978-3-540-76297-3.\n\n**Auer, S.; Dietzold, S.; Riechert, T.:**\nSocial Software für Kollaborative Wissensarbeit. In Müller, C., Gronau, N. (eds.): Bildung von sozialen Netzwerken in Anwendungen der Social Software, GITO-Verlag - Expertenwissen für die industrielle Praxis, Berlin, 2007, ISBN: 978-3-940019-26-4.\n\n**Auer, S.; Lehmann, J.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/ExtractingSemantics.pdf What have Innsbruck and Leipzig in common? Extracting Semantic from Wiki Content.)) In Franconi et al. (eds), Proceedings of European Semantic Web Conference (ESWC’07), LNCS 4519, pp. 503–517, Springer, 2007.\n\n**Auer, S., Jungmann, B., Schönefeld, F.:**\nSemantic Wiki Representations for Building an Enterprise Knowledge Base. In Grigoris Antoniou, Uwe Aßmann, Cristina Baroglio, Stefan Decker, Nicola Henze, Paula-Lavinia Patranjan, Robert Tolksdorf (Eds.): Reasoning Web, Third International Summer School 2007, Dresden, Germany, September 3-7, 2007, Tutorial Lectures. Lecture Notes in Computer Science 4636 Springer 2007, ISBN 978-3-540-74613-3.\n\n**Bizer, C.; Cyganiak, R.; Auer, S.; Kobilarov, G.:**\n((http://sites.wiwiss.fu-berlin.de/suhl/bizer/pub/Bizer-etal-WWW2007-DBpedia-Talk.pdf DBpedia.org - Querying Wikipedia like a Database.)) ((http://www2007.org/prog-Developers.php Developers track)) at 16th International World Wide Web Conference (WWW2007), Banff, Canada, May 2007.\n\n**Dietzold, J.; Auer, S.:**\nAccessing RDF Knowledge Bases via LDAP Clients. 7th International Conference on Knowledge Management. I-KNOW’07, 5-7 September, 2007, Graz, Austria.\n\n**Fienhold, J.; Riechert, T.; Lohmann, S.:**\nDer Lecture Tagger: Social Tagging in E-Learning-Umgebungen. In V. Dötsch et al. (Hrsg.): Proceedings of the Workshop on e-Learning 2007, Leipzig, S. 251-261, 2007\n\n**Herrmann M.; Ahtisham A.; Dalferth O.:**\nApplying Semantics (WSDL, WSDL-S, OWL) in Service Oriented Architectures (SOA). Proceedeings of 10th Intl. Protégé Conference, July 15-18, 2007, Budapest, Hungary (Accepted).\n\n**Lehmann, J.; Schüppel, J.; Auer, S.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/relfinder.pdf Discovering Unknown Connections - the DBpedia Relationship Finder.)) Proceedings of 1st Conference on Social Semantic Web. Leipzig (CSSW’07), 24.-28. September, 2007. Volume P-113 of GI-Edition - Lecture Notes in Informatics (LNI). Bonner Köllen Verlag, ISSN 1617-5468, ISBN 978-3-88579-207-9.\n\n**Lehmann, J.; Hitzler, P.:**\n((http://jens-lehmann.org/files/2007_operator_analysis.pdf Foundations of Refinement Operators for Description Logics)) Proceedings of the 17th International Conference on Inductive Logic Programming (ILP), 2007, Corvallis, Oregon, USA.\n\n**Lehmann, J.; Hitzler, P.:**\n((http://jens-lehmann.org/files/2007_alc_learning_algorithm.pdf A Refinement Operator Based Learning Algorithm for the ALC Description Logic)) Proceedings of the 17th International Conference on Inductive Logic Programming (ILP), 2007, Corvallis, Oregon, USA.\n\n**Lehmann, J.**\n((http://jens-lehmann.org/files/2007_operator_analysis.pdf Hybrid Learning of Ontology Classes)) Proceedings of the 5th International Conference on Machine Learning and Data Mining (MLDM), 2007, Leipzig, Germany\n\n**Lohmann, S.; Riechert, T.; Fienhold, J.:**\nNetzwerkeffekte, Dynamik und Feedback durch die Integration von Social Tagging in E-Learning-Umgebungen. In C. Rensing, G. Rößling (Hrsg.): Proceedings der Pre-Conference Workshops der 5. e-Learning Fachtagung Informatik - DeLFI 2007, S. 27-34, 2007\n\n**Riechert, T.; Auer, S.; Lehmann, J.:**\nTowards Semantic based Requirements Engineering. 7th International Conference on Knowledge Management. I-KNOW’07, 5-7 September, Graz, Austria.\n\n**Riechert, T.; Lauenroth, K.; Lehmann, J.:**\nSemantisch unterstütztes Requirements Engineering. In: In S. Auer et al. (eds): The Social Semantic Web 2007 - Proceedings of the 1st Conference on Social Semantic Web, Leipzig\n\n**Riechert, T.; Lohmann, S.:**\nMapping Cognitive Models to Social Semantic Spaces – Collaborative Development of Project Ontologies. In S. Auer et al. (eds): The Social Semantic Web 2007 - Proceedings of the 1st Conference on Social Semantic Web, Leipzig, pp. 91-98, 2007\n\n**Weiske, C.; Auer, S.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/sparql-enhancements.pdf Implementing SPARQL Support for Relational Databases and Possible Enhancements.)) Proceedings of 1st Conference on Social Semantic Web. Leipzig (CSSW’07), 24.-28. September, 2007. Volume P-113 of GI-Edition - Lecture Notes in Informatics (LNI). Bonner Köllen Verlag, ISSN 1617-5468, ISBN 978-3-88579-207-9.\n\n**Ahtisham, A.; Herrmann, M.; Auer, S.; Golden, R.:**\nReal-life SOA Experiences and an Approach Towards Semantic SOA. Proceedings of 4th International Workshop on SOA and Web Services in conjunction with ACM SIGPLAN International Conference on Object-Oriented Programming, Systems, Languages, and Applications, October 22-26, Portland, Oregon, USA, ISBN 82-997428-0-3, pp. 72-81.\n\n**Ahtisham, A.; Auer, S.; Shen, J.; Hermann, M.:**\nExpressing Business Process Models as OWL-S Ontologies. Grid and Peer-to-Peer based Workflows (GPWW), September 4th 2006, Vienna, Austria. In J. Eder, S. Dustdar et al. (Eds.): BPM 2006 Workshops, LNCS 4103, 2006. Springer-Verlag Berlin Heidelberg 2006.\n\n**Auer, S.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/RapidOWL.pdf RapidOWL - an Agile Knowledge Engineering Methodology)). Proceedings of 1st International Workshop on Semantic Technologies in Collaborative Applications (STICA 06), published by the IEEE Computer Society (P2623), ISSN: 1524-4547, ISBN: 0-7695-2623-3.\n\n**Auer, S.; Dietzold, S.; Riechert, T.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/ontowiki.pdf OntoWiki - A Tool for Social, Semantic Collaboration)). 5th International Semantic Web Conference, Nov 5th-9th, Athens, GA, USA. In I. Cruz et al. (Eds.): ISWC 2006, LNCS 4273, pp. 736–749, 2006. Springer-Verlag Berlin Heidelberg 2006.\n\n**Auer, S.; Fähnrich, K.-P.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/softwiki.pdf SoftWiki - Agiles Requirements-Engineering für Softwareprojekte mit einer großen Anzahl verteilter Stakeholder)). Statuskonferenz Forschungsoffensive \"Software Engineering 2006\", 26.-28. Juni 2006, Leipzig.\n\n**Auer, S.; Herre, H.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/PSI-evolution.pdf A Versioning and Evolution Framework for RDF Knowledge Bases)). In proceedings of Sixth International Andrei Ershov Memorial Conference - Perspectives of System Informatics, 27-30 June 2006, Novosibirsk, Akademgorodok, Russia, Springer LNCS 4378.\n\n**Auer, S.; Herre, H.:**\nRapidOWL — An Agile Knowledge Engineering Methodology. In proceedings of Sixth International Andrei Ershov Memorial Conference - Perspectives of System Informatics, 27-30 June 2006, Novosibirsk, Akademgorodok, Russia, Springer LNCS 4378.\n\n**Auer, S.; Riechert, T.; Fähnrich, K.-P.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/softwiki-geneme.pdf SoftWiki - Agiles Requirements-Engineering für Softwareprojekte mit einer großen Anzahl verteilter Stakeholder)). GeNeMe'06 - Gemeinschaft in neuen Medien, 29. Sep. 2006, Dresden, Germany.\n\n**Böhm, K; Hollaus, B.; Riechert, T.:**\nUnterstützung des Requirements-Engineering-Prozesses in der Softwareentwicklung durch den Einsatz semantischer Technologien. In: Fähnrich, K.-P.; Kühne, S.; Speck, A.; Wagner, J. (Hrsg.): Integration betrieblicher Informationssysteme: Problemanalysen und Lösungsansätze des Model-Driven Integration Engineering, Leipziger Beiträge zur Informatik: Band IV. Leipzig: 2006, S. 152-165, ISBN-10: 3-934178-66-9, ISBN-13: 978-3-934178-66-3.\n\n**Dietzold, S.; Auer, S.:**\nAccess Control on RDF Triple Stores from a Semantic Wiki Perspective. Proc. of Scripting for the Semantic Web Workshop at the ESWC, Budva, Montenegro, June 12, 2006, CEUR Workshop Proceedings, ISSN 1613-0073, online ((http://CEUR-WS.org/Vol-181/paper1.pdf CEUR-WS.org/Vol-181/paper1.pdf))\n\n**Dietzold, S.; Auer, S.; Riechert, T.:**\n((http://www.informatik.uni-leipzig.de/~auer/publication/WissensarbeitMitOntoWiki.pdf Kolloborative Wissensarbeit mit OntoWiki)) Workshop Bildung von Sozialen Netzwerken in Anwendungen der \"Social Software\", 6. 10. 2006, Dresden, Germany. In Christian Hochberger and Rüdiger Liskowsky, INFORMATIK 2006 -- Informatik für Menschen!, volume P-93 of GI-Edition - Lecture Notes in Informatics (LNI), pp. 112--119. Bonner Köllen Verlag, 2006. ISBN: 978-3-88579-187-4, ISSN: 1617-5468\n\n**Herrmann, M.; Aslam, M. A.:**\nMercedes Car Group (MCG) Enterprise Architektur – Ein Ansatz zur semantischen Modellierung der Services in einer SOA. In: Fähnrich, K.-P.; Kühne, S.; Speck, A.; Wagner, J. (Hrsg.): Integration betrieblicher Informationssysteme: Problemanalysen und Lösungsansätze des Model-Driven Integration Engineering, Leipziger Beiträge zur Informatik: Band IV. Leipzig: 2006, S. 145-151, ISBN-10: 3-934178-66-9, ISBN-13: 978-3-934178-66-3.\n\n**Kunze, J.; Riechert, T.; Auer, S.:**\nEine Schnittstelle für Arztpraxisdaten mittels einer Ontologie auf Basis von HL7 Version 3.Tagungsband XML-Tage, Berlin, 25.-27. Sep. 2006.\n\n**Riechert, T.; Jiménez, E.; Cantador, I.; Engler, M.; Michaelides, D.; Bortenschläger, M.; Tolksdorf, R.:**\nSTICA Workshop Final Report. Proceedings of 1st International Workshop on Semantic Technologies in Collaborative Applications (STICA 06), published by the IEEE Computer Society (P2623), ISSN: 1524-4547, ISBN: 0-7695-2623-3.\n" . . . . "2007-02-06T11:58:29"^^ . "===Elastic Web Application Cloud===" . . . . "2007-02-08T21:53:38"^^ . "==Semantic Media Wiki==\nAgile collaboration for widely distributed Document Management\nCollaborative creation of ontologies/taxonomies for document/content annotation\n\n===Target Outcomes===\n\n**Large-scale European-wide digital libraries with innovative access services that support communities of practice in the creation, interpretation and use of cultural and scientific content, including multi-format and multi-source digital objects. They should be combined with robust and scalable environments which include semantic-based search capabilities and essential digital preservation features. Particular attention is given to** costeffective digitisation processes and to the **use of digital resources in multilingual and multidisciplinary contexts.**\n\n====Workpagages====\nMethodology\n\nMultilinguality\n\nSemantic Media Management Wiki\n\nProvenance/Trust and Access Controll\n\nLearning of DL-Ontologies for Document Annotation/Description\n\nUse-case: Media archive RBB (Rundfunk Berlin Brandenburg)\n\nUse-case: Slavonic Church Documents" . . . . "2007-03-27T15:37:27"^^ . "==SABRE Conference on Social Semantic Web (CSSW 2007)==\nThe concept of Social Software was coined to characterize a variety of software and services on the Web, which enable new ways of communication and exploit social interactions for creating large content bases from a multitude of user contributions. The Semantic Web is a extension of the current Web aiming at enhanced search and navigation facilities and at integrating information from multiple sources. A question at the moment actively discussed in conference panels, visionary papers and project proposals is how the different approaches Social Software and Semantic Web can be combined in a synergetic way. \n\nCSSW will provide a podium for the rapidly emerging field of approaches aiming at exploiting Social Software concepts for the bootstrapping of the Semantic Web and lifting Social Software to the semantic collaboration level. CSSW aims at combining three different perspectives on the Social Semantic Web: the business and entrepreneurial perspective focusing the added value of specific social semantic web applications, the technical perspective enables and supports the exploitation of the \"ant intelligence\" of social networks and last but not least the social perspective, which explores motivations, benefits and emergent effects. CSSW targets to bring these three perspectives together, to widen existing horizons, to create novel ideas and to find new ways of understanding this emerging field. \n\nCSSW is supported by the following organizations and projects:\n#||\n||\n<# #>\nGI-Fachgruppe Methoden und Werkzeuge zur Entwicklung interaktiver Systeme (INSYDE)|\n<# #>\nLeipziger Informatik Verbund|\n<# #>\nProject, funded by ~BmBF as part of the research initiative “Software Engineering 2006”\n||\n||#\n\nPlease also have a look at the ((http://www.sabre-conference.eu/ SABRE (Software, Agents, and Services for Business, Research, and E-Sciences) website)) for further information.\n\n===Invited Talk===\n((http://www.openlinksw.com/blog/~kidehen Kingsley Idehen)) will give an invited talk on \"Hello Data Web - Exposing the Data Web\". Kingsley is Founder, President and CEO of ((http://www.openlinksw.com OpenLink Software)), a leading provider of high-performance Universal Data Access, Data Integration, Hybrid Database Engine technology and developer of the ((http://en.wikipedia.org/wiki/Virtuoso_Universal_Server Virtuoso Server)). With his entrepreneurial experience, his contributions to the technical foundations of the future Web and his backing of the Open Data initiatives he ideally combines the different perspectives on the Social Semantic Web.\n\n===Topics of Interest===\nCSSW covers all topics related to Social Semantic Collaboration (SSC) in Web based environments. Typical topics of interest include (but are not limited to):\n\n**Economic / Entrepreneurial Perspective**\n * Business aspects of SSC\n * Economies of \"attention\" for semantic collaboration\n * Business models for SSC\n * Models measuring costs/benefits of SSC\n * Authentication, authorization and accounting - policies, charging and billing models for social software\n * Experimental use cases involving social software in areas of telecommunications, dating, recruitment, eTourism, eBusiness, eGovernment, etc.\n\n**Technical Perspective**\n * Applying Social Software strategies such as tagging, mashups for SSC\n * Semantic Data Web: browsers and end-points\n * Extracting semantic content from existing information sources, e.g. Wikipedia\n * Collaborative, community-driven ontology construction\n * Combining existing ontologies and schemata, social ontology sharing and matching techniques\n * Reasoning supporting adaptive semantic collaboration, e.g. Description-Logic-Learning\n * Storage, inference and caching for scalable SSC\n * Exposing and interconnecting Web-APIs as light-weight Semantic Web Services\n * Social Semantic Web and Mobile services\n * User-interface components, template languages supporting SSC \n\n**Social Perspective**\n * Analysis, visualization, presentation of social networks\n * Approaches combining Social Software & Semantic Web\n * Group management, presence, social interaction enablers in mobile service platforms\n * Strategies for implementing architectures of semantic participation\n * Trust and privacy issues in social software\n * Implementation of gratification and reward systems\n * Quality analysis of socially generated semantic content\n * Analysis of motivations and behavior of social software users\n * Knowledge acquisition and ontology management in SSC\n * Analysis of emergent effects within social software\n\n===Submission types===\nAuthors are invited to submit original papers. \n * Research papers - maximum 10 pages\n * Posters - 4 pages\n * Demos - 4 pages\n\nPapers for submissions should be formatted according to ((http://www.gi-ev.de/fileadmin/redaktion/2005_LNI/PDF/LNILaTeX-Vorlage.zip GI-LNI style)) and submitted in PDF format. Submission details will be announced here shortly.\nAll papers will be published in ((http://www.gi-ev.de/service/publikationen/lni/ Lecture Notes in Informatics (LNI))). Best papers from CSSW 2007 will be considered for revision, extension, and publication in a special issue of the Journal of Online Engineering.\n\n===Dates and Conference Format===\n**Paper, demo, poster submission: June 1st**\nThe submission deadline is strict, no extensions will be given.\n\nNotification of acceptance: July 25th\n\nConference: September 26-28th \n\nCSSW will be a two day conference with possible accompanying workshops:\n * First day / 26th: 3 research paper sessions, demo and poster session\n * Second day / 27th: invited speaker, 2 research paper sessions, concluding panel discussion\n * Third day / 28th: workshops\n\nPaper acceptance is strictly limited to maximum 18 research papers. Additionally, poster and demo submissions are possible.\n\n===Committees===\n**Conference Organizers**\n((http://www.informatik.uni-leipzig.de/~auer/ Sören Auer)), Universität Leipzig, Germany and University of Pennsylvania, USA\n((http://bizer.de Chris Bizer)), FU Berlin, Germany\n((http://wi.uni-potsdam.de/homepage/potsdam.nsf?Open&ID=2329CF98EDE2BBCBC125710F00396936&Key=&Sel=&Lang=de Claudia Mueller)), Universität Potsdam, Germany\n((http://www.ee.surrey.ac.uk/Personal/A.Zhdanova/ Anna V. Zhdanova)), University of Surrey, UK\n\n**Program Committee**\n((http://sw.deri.org/~jbreslin/ John G. Breslin)), DERI, Ireland\n((http://dme.uma.pt/jcardoso/ Jorge Cardoso)), University of Madeira, Spain\n((http://richard.cyganiak.de/ Richard Cyganiak)), FU Berlin, Germany\n((http://www.l3s.de/~diederich Jörg Diederich)), L3S, Germany\n((http://bis.informatik.uni-leipzig.de/SebastianDietzold Sebastian Dietzold)), Universität Leipzig, Germany\n((http://www.wim.uni-koeln.de/Dr-Kai-Fischbach.23.0.html Kai Fischbach)), Universität Köln, Germany\n((http://tilab.com Walter Goix)), Telecom Italia, Italy\n((http://sw.deri.org/~aharth/ Andreas Harth)), National University of Ireland, Ireland\n((http://kmi.open.ac.uk/people/tom/about/html Tom Heath)), Open University, UK\n((http://web.iwi.unisg.ch/org/iwi/iwi_web.nsf/wwwTeamGer/HeideckeFlorian.htm Florian Heidecke)), Universität St. Gallen, Switzerland\n((http://www.vakantieland.nl Ceriel Jacobs)), Vakantieland, The Netherlands\n((http://www.kunsan.ac.kr/english/ Dongwon Jeong)), Kunsan National University, Korea\n((http://www.intelligent.pe.kr Jason J. Jung)), Inha University, Korea\n((http://www.t-systems-mms.com Berit Jungmann)), T-Systems MMS, Germany\n((http://www.aifb.uni-karlsruhe.de/Personen/viewPersonenglish?id_db=2107 Markus Krötzsch)), AIFB - University of Karlsruhe, Germany\n((http://bis.informatik.uni-leipzig.de/JensLehmann Jens Lehmann)), Universität Leipzig, Germany\n((http://pipek.uni-siegen.de/ Volkmar Pipek)), Universität Siegen, Germany\n((http://www.polleres.net Axel Polleres)), Universidad Rey Juan Carlos, Spain\n((http://bis.informatik.uni-leipzig.de/ThomasRiechert Thomas Riechert)), Universität Leipzig, Germany\n((http://www.minet.uni-jena.de/~sack Harald Sack)), Hasso Plattner Institut, Germany\n((http://www.dfki.uni-kl.de/~sauermann Leo Sauermann)), DFKI, Germany\n((http://www.schaffert.eu Sebastian Schaffert)), salzburgresearch, Austria\n((http://www.bamberg-gewinnt.de/wordpress/lebenslauf-und-aktivitaten/buch-weblogs/ Jan Schmidt)), Bamberg, Germany\n((http://www.t-systems-mms.com Frank Schönefeld)), T-Systems MMS, Germany\n((http://user.uni-frankfurt.de/~chris/ Christian Stegbauer)), Goethe-Universität, Frankfurt, Germany\n((http://www.comp.lancs.ac.uk/~strohbach Martin Strohbach)), NEC Europe, Europe\n((http://www.seco.tkk.fi/u/kimvilja Kim Viljanen)), Helsinki University of Technology, Finnland\n((http://jakobvoss.de Jakob Voss)), Wikimedia e.V., Germany\n((http://www.interactivesystems.info Jürgen Ziegler)), Universität Duisburg-Essen, Germany\n\nto be completed.\n%%(comments)\nSocial\n((http://blog.mathemagenic.com Lilia.Efimova)) Lilia.Efimova@telin.nl\nvolkmar.pipek@uni-siegen.de\nstegbauer@soz.uni-frankfurt.de\n jan.schmidt@bnv-bamberg.de\n\n\nTechnical\n Harald.Sack@hpi.uni-potsdam.de\n((http://www.cs.vu.nl/~pmika/ Peter Mika)) pmika@cs.vu.nl\n andreas.harth@deri.org\n axel.polleres@urjc.es\n((http://kmi.open.ac.uk/people/domingue John Domingue)) j.b.domingue@open.ac.uk\ndiederich@l3s.de \n((http://www.comp.lancs.ac.uk/~strohbach Martin Strohbach @ NEC Europe)) Martin.Strohbach@netlab.nec.de\n(( Walter Goix @ Telecom Italia)) laurentwalter.goix@telecomitalia.it\n((http://webode.dia.fi.upm.es/Asun/Asun.html Asunción Gómez-Pérez)) asun@fi.upm.es\n((http://www.isi.edu/~timc Timothy Chklovski)) timc@isi.edu\n j2jung@intelligent.pe.kr\n((http://www.stefandecker.org Stefan Decker)) Stefan.Decker@deri.org\n\nEconomical\nfischbach@wim.uni-koeln.de\nFlorian.Heidecke@unisg.ch\n((http://fbstaff.cityu.edu.hk/iscw Christian Wagner)) fbcw@cityu.edu.hk\n\n%%\n\n===Related Events===\n\n((http://www.i-semantics.tugraz.at/ I-SEMANTICS '07)) International Technology Conference, 5th - 7th of September 2007 in Graz, Austria.\n\n((http://semanticscripting.org/SFSW2007/ 3rd Scripting for the Semantic Web)) at June 6th, European Semantic Web Conference (ESWC 2007) in Innsbruck, Austria.\n\n((http://km.aifb.uni-karlsruhe.de/ws/ckc2007/ Workshop on Social and Collaborative Construction of Structured Knowledge)) at 16th International World Wide Web Conference (WWW2007) Banff, Canada, May 8, 2007.\n\n((http://www.semanticdesktop.org/xwiki/bin/view/SemanticDesktopWS2006/ Semantic Desktop and Social Semantic Collaboration Workshop)) at the International Semantic Web Conference, 5 November 2006, Athens, GA, USA\n\n2nd Workshop on Semantic Wikis: WibKE2006: Wiki-based Knowledge Engineering at WikiSym 2006 - International Symposium on Wikis, August 21-23, 2006, Odense, Denmark\n\nSemWiki2006 - From Wiki to Semantics at European Semantic Web Conference (ESWC 2006)\n\n1st International Workshop on Semantic Technologies in Collaborative Applications STICA 06 at 15th International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises.\n\n((http://lsdis.cs.uga.edu/~aleman/efw2007/ 1st International ExpertFinder Workshop)), 16 January 2007, Berlin, Germany." . . . . "2007-12-21T11:00:34"^^ . "==Projects==\n((/projects/SoftWiki SoftWiki))\n((/projects/Powl Powl))\n((/projects/OntoWiki OntoWiki))\n((/projects/DLLearner DL-Learner))\n((/projects/R2D2 R2D2))\n((/projects/LDAP Semantic LDAP))\n((/projects/Atuin ATUIN))\n((/projects/xOperator xOperator))" . . . . "2007-09-22T12:58:48"^^ . "{{Include page=\"/Projects/OntoWiki/Menu\" divclass=\"floatbox\" nomark=\"1\"}}\n==Command Line Interface (owcli)==\nThe OntoWiki Command Line Interface (##owcli##) is a php-based command line tool to administrate and manipulate OntoWiki Knowledge Bases.\n\n{{toc}}\n\n===Installation===\nInstall a command line php5 and pear (on debian/ubuntu: ##sudo apt-get install php5-cli php5-pear##).\nInstall required pear packages (on debian/ubuntu: ##sudo pear install Console_Getargs Config##).\nDownload, Install and configure the OntoWiki Command Line Interface:\n%%\nsvn co https://powl.svn.sourceforge.net/svnroot/powl/trunk/owcli owcli\ncd owcli\ncp owcli.php /usr/local/bin/owcli && chmod a+x /usr/local/bin/owcli\ncp Subscription.php /usr/local/bin/\ncp owcli.1 /usr/local/man/man1/\ncp dot.owcli ~/.owcli\nvi ~/.owcli\n%%\n\n===Examples===\nSet the variable OWMODEL (to change the default model): \n##export OWMODEL=\"\"http://localhost/model1#\"\" ##\n\nDrop a model (delete statements, popularities, etc.): \n##owcli -m \"\"http://localhost/model1#\"\" --drop##\n\nCreate a new Model and add tripels from a file:\n##owcli -m \"\"http://localhost/model1#\"\" --create --add -i model.rdf##\n\nCreate a new Model and add tripels from a mapping (hint: use the variable ##OWMODEL## so you dont need ##-m## everytime):\n##export OWMODEL=\"\"http://localhost/model1#\"\"; owcli --map Mapping.n3 | owcli --create --add##\n\nExport the default model, put it to cwm and add the inferred statements from the rule file:\n##owcli --export | cwm --rdf --n3 --filter=Rules.n3 --rdf | owcli --add##\n\nGeocode all values of the foaf:based_near attribute in the default model and add it to the default model:\n##owcli -d --geocode \"\"http://xmlns.com/foaf/0.1/based_near\"\" | owcli --add##\n\n{{a name=\"sub\"}}\n===Subscriptions===\nTo be able to use the update-subscriptions option you have to subscribe to at least one content resource. Content resource means any document holding information in RDF, N3, N-Triples or xhtml containing RDF. Subscribing is managed by storing information regarding this resource in a certain (or any other) model in your Onto Wiki installation. \n\nFor a simple example just download ((http://powl.svn.sourceforge.net/viewvc/*checkout*/powl/trunk/models/Subscriptions/example.rdf this)) file and import it into your Onto Wiki:\n##owcli --create --add -i example.rdf -m \"\"http://ns.ontowiki.net/Subscriptions/\"\" ##.\n\nAfter that you can update this subscription:\n##owcli -us -m \"\"http://ns.ontowiki.net/Subscriptions/\"\"##.\n\nYou can check the result:\n## owcli -l ##\nThe name of the example model \"\"http://ns.ontowiki.net/Subscriptions/exampleModel\"\" should occur in the list now.\n\nThe mandatory attributes for a subscription are: \n * storeModel - where to store the subscribed information \n * updateInterval - in minutes\n * updateModus - ##new## or ##add##, while ##add## means that any information is just added to the model and ##new## means old information is deleted first.\n\nThe optional attribute is:\n * query - where you can specify a SPARQL-CONSTRUCT-query to select certain information from the content resource to be stored into the model.\n\n===Parameters===\n##-w --wiki=## - Set OntoWiki database which should be used (default is ##default## or the value of the environment variable ##OWWIKI##)\n##-m --model=## - Set model which should be used (default is ##\"\"http://localhost/SysOnt/0.1#\"\"## or the value of the environment variable ##OWMODEL##)\n##-i --input=## - input model file (- for STDIN) (default is STDIN)\n##-o --output=## - output model file (- for STDOUT) (-)\n##-l --list## - List models from a specific OntoWiki database\n##--create## - Creates a new model\n##--drop## - Deletes the model\n##--export## - Exports the model\n##--empty-cache## - Empty the model cache only\n##--empty-popularity## - Empty the model popularity only\n##--empty-ratings## - Empty the model ratings only\n##--empty-namespaces## - Empty the model namespaces only\n##--add## - Adds all statements from input to the model\n##--geocode=## - Outputs a model with geocoded (address) values from a given datatype property\n##--map## - Takes a D2RQ mapping model in N3 from input and outputs the mapped model in RDF/XML\n##-us --update-subscriptions## - Update all subscriptions\n##-c --config=## - Set a config file (default is ~/.owcli or the value of the environment variable ##OWCONFIG##)\n##-d --debug## - Output some debug infos\n##-q --quiet## - Do not output info messages\n##-h --help## - Show help screen\n" . . . . "2007-03-13T13:23:56"^^ . "{{toc divclass=\"floatbox\" to=\"h3\"}}\n==Google Summer Of Code==\nThe workgroup AKSW with its ~OntoWiki project is participating in the ((http://code.google.com/soc/ Google Summer Of Code )) and is looking for students to contribute. We are looking for enthusiastic students (see ((http://code.google.com/support/bin/topic.py?topic=10727 SoC student requirements))) with a solid knowledge of PHP, who are interested in Semantic Web, Agile Knowledge Engineering and Folksonomy and Social Software Apps. \n\n===About AKSW===\nAKSW is leading several large open-source and community projects in the context of the upcoming Social Semantic Web:\n * ((projects/Powl Powl)) is an development framework for Semantic Web applications used in many industrial and research applications. Powl has a strong developer and user community (it is currently downloaded over 200 times per month with a strong increasing tendency).\n * ((projects/OntoWiki OntoWiki)) (demo at http://3ba.se/screencast) is our next generation social collaboration tool for the Semantic Web based on Powl. ~OntoWiki is used in many domains aiming at supporting social semantic collaboration.\n * ((http://dbpedia.org dbpedia.org)) is a community effort (co-led by AKSW and partially based on Powl/~OntoWiki) to extract structured information from Wikipedia and to make this information available on the Web. dbpedia.org gains at the moment enormous attention (e.g. in ((http://radar.oreilly.com/archives/2007/03/different_appro_1.html Tim O'Reilly's Radar))), since the extracted datasets allow the answering of previously not easily answerable questions (see http://wikipedia.aksw.org) and creation of semantic Mashups based on Wikipedia knowledge.\nIn addition to that the AKSW workgroup is embedded in the Semantic Web and research community. For example, we organize the yearly ((http://semanticscripting.org/SFSW2007/ workshop on Scripting for the Semantic Web)) and this year AKSW will host the first ((http://aksw.org/cssw Conference on Social Semantic Web)) in Leipzig.\n\n===Why work on ~OntoWiki?===\n~OntoWiki is a next generation, social knowledge engineering tool for the Semantic Web. It is downloaded monthly over 200 times and used for knowledge engineering applications in science (e.g. for the development of bio-medical ontologies), industry (as a tool for developing semantic web business applications) and for virtual organizations and online communities. You can find more information on ~OntoWiki on ((Projects/OntoWiki our project overview page)) or at the ((http://sf.net/projects/powl Sourceforge project page)). Since in the field of the Semantic Web there is still a lack of demos and applications clearly showing its benefits, we have the vision that Powl/~OntoWiki could be the nucleus of a healthy eco-system of open-source applications and mashups integrating the social \"ant-intelligence\" dimension into the Semantic Web.\n\n===Dates===\n * 05.03.2007 - 12.03.2007: Mentor Application\n * 14.03.2007 - 23.03.2007: Student Application\n * Summer 2007: Coding and communicating\n * 26.09.2007 - 27.09.2007: Conference on Social Semantic Web including GSoC track\n\n===GSoC track at CSSW===\nDespite the advantages of online communities and Internet communication it is sometimes important to meet in person. In the end of September we are organizing a conference on ((http://aksw.org/cssw Social Semantic Web)) in Leipzig. It will include scientific paper presentations, demos, posters, social events and keynote talks by senior scientists, business people and entrepreneurs. The central persons of the open-source communities around Powl, ~OntoWiki and dbpedia.org will attend the conference and we would like to use the chance to also invite all successful GSoC participants we mentored to meet each other and to present their projects in a special GSoC demo session. The conference fee for students will be very low (Euro 10) and additionally we will try to acquire travel funds for the GSoC students mentored by us.\n\n===Project Ideas===\nIn the following we collected some ideas for GSoC projects which will support the technologies and approaches we are working on. However, we will be happy to mentor every project with relations to Social Software, the Semantic Web or PHP based Web applications in general. Feel free to describe your project idea!\n\n====Expose Web 2.0 APIs as Semantic Web Services====\nOther than Web Services Javascript APIs as well as JSON and REST interfaces are widely deployed on the Web (see ((http://programmableweb.com))). However, new applications on the basis of those could be much simpler developed, if inputs and outputs of the function and method calls would be uniquely identified. This would allow to automatically compose existing Web 2.0 APIs resulting in completely new Web 2.0 mashups. A Javascript application is envisioned allowing the annotation of inputs and outputs of APIs function and method calls as well as their dynamic composition. For example the result of DBPedia query for birthplaces of people born in Germany the 18th century could be combined with information from Geonames returning geo-coordinates and finally mapped using a map API (such as Yahoo or Google maps).\n**Tags:** Web 2.0 APIs, mashups, Javascript, Semantic Web Services\n**Mentor:** SoerenAuer\n\n====~OpenID Service====\nAs a tool for knowledge engineering, OntoWiki can also used for the management of account information. The idea is about the integration of an ((http://en.wikipedia.org/wiki/OpenID OpenID)) server for providing identification and authentification service against the managed RDF model.\n**Tags:** OpenID, PHP, OntoWiki, RDF\n**Mentor:** SebastianDietzold\n\n====Reasoning Integration====\nOWL ontologies have a formal semantics, which allows to infer implicit information from ontologies. This process is called reasoning. There are several different reasoning possibilities e.g. finding out whether an ontology contains contradictions, finding all instances of a given class, or infering a hierarchy of all classes in an ontology. Since OWL (more specifically its most prominent variant OWL DL) is based on Description Logics, there are several different efficient and highly-optimised reasoners available (((http://www.cs.man.ac.uk/~sattler/reasoners.html list of reasoners))).\n\n//Although reasoning procedures have been investigated in depth and several OWL reasoners exist, there have been very few efforts to use reasoning in web applications.// We want to extend ~OntoWiki with powerful reasoning procedures. Technically, this will be realised by implementing an ~OntoWiki DIG client. ((http://dl.kr.org/dig/ DIG)) is an interface to communicate with Description Logics and OWL reasoners, which is supported by all popular reasoners. This allows to use all DIG capable reasoners within ~OntoWiki.\n**Tags:** OWL, PHP, OntoWiki, Description Logic\n**Mentor:** JensLehmann\n\n====~OntoWiki-Exhibit Integration====\n((http://simile.mit.edu/exhibit/ Exhibit)) is a lightweight structured data publishing framework that lets you create web pages with support for sorting, filtering, and rich visualizations by writing only HTML and optionally some CSS and Javascript code. The content created within ~OntoWiki could be easily represented in Exhibit.\n**Tags:** Exhibit, Javascript, PHP, OntoWiki, RDF\n**Mentor:** SoerenAuer\n\n====Instance Based Learning of Classes====\nWhile the benefits of using ontologies are now well understood, their creation and maintenance is still a burdensome task. Knowledge engineers need more powerful tool support to evolve and manage ontologies. One of the main objectives of our research is to develop learning tools, which aid the knowledge engineer by suggesting modifications of an ontology in an automatic or semi-automic way. The usage of these tools will ensure that the developed ontologies will be consistent and have the desired semantics. Additionally, we want to offer support for data analysis and data mining in ontologies to reveal interesting and beneficial information about the relation of elements within an ontology.\n\nWe aim to integrate our learning tool in ~OntoWiki, thereby building a bridge between Artificial Intelligence algorithms and end user applications. Our goal is that the user will be able to learn (possibly complex) definitions of new classes just by selecting some objects in the ontology, which should belong to the new class (positive examples), and other objects, which should not belong to the new class (negative examples). This helps knowledge engineers to construct ontologies even if they are not OWL experts.\n**Tags:** OWL, PHP, OntoWiki, Description Logic\n**Mentor:** JensLehmann\n\n====DBPedia Query Builder and Browser====\n((http://dbpedia.org dbpedia.org)) is a community effort to extract structured information from Wikipedia and to make this information available on the Web. dbpedia allows you to ask sophisticated queries against Wikipedia and to link other datasets on the Web to Wikipedia data. Currently, the DBPedia extraction contains more than 40M RDF triples. A prototype for querying these is available at http://wikipedia.3ba.se. This should be revised and extended to allow non expert users to query the DBPedia extraction and to store, tag, categorize and annotate existing queries.\n**Tags:** PHP, JavaScript, OntoWiki, Wikipedia\n**Mentor:** SoerenAuer\n\n====Mapping of Relational Databases====\n((/Projects/R2D2 R2D2)) is an interpreter for the ((http://sites.wiwiss.fu-berlin.de/suhl/bizer/D2RQ/spec/ D2RQ Mapping Language)) and based on RAP, the RDF API for PHP. The idea is to expand the ~OntoWiki backend layer so that it is possible to interpret mapping models and access a virtual model which is mapped from a relational database.\n**Tags:** PHP, SQL, OntoWiki, Databases\n**Mentor:** SebastianDietzold\n\n====Personal Knowledge Management====\n~OntoWiki is primarily used for collaborative knowledge engineering. We want to extend ~OntoWiki for Personal Knowledge Management in the Semantic Web.\n**Tags:** PHP, OntoWiki, Personal Information Management, RSS, FOAF, iCal\n**Mentor:** SebastianDietzold\n\n====Design of a new ~OntoWiki core theme====\nOntoWiki is in dire need of more graphical design talent... and the goal of SoC is to involve more people in open source. Designers can be a part of that. Not only will you need to design a modern, pleasing, eye-catching and flexible design, you'll also have to implement it in HTML/CSS. A generic OntoWiki theme needs to be flexible enough to accomodate a wide variety of content and user interfaces. It needs to be accessible and structured, and preferably have clean markup.\n**Tags:** HTML, CSS, OntoWiki, Graphic Design\n**Mentor:** ThomasRiechert\n\n====Collaborative Requirements Engineering====\nStakeholders have to work in a collaborative environment to find out requirements for Software-Systems (this is also true for other domains). Typically, this involves meetings and discussions. Therefore, the number of involved stakeholders is usually limited (for reasons of efficiency). ~OntoWiki may be used as the foundation for a tool to enable a large number of spatially distributed stakeholders to take part in this process. The tool will be based on an OWL requirements model.\n**Tags:** PHP, OntoWiki, Requirements Engineering, OWL\n**Mentor:** ThomasRiechert\n" . . . . "2007-03-09T16:33:06"^^ . "==Google Summer of Code 2007==\nThe ~OntoWiki project is participating in the ((http://code.google.com/soc/ Google Summer Of Code )) and is looking for students to contribute. We are looking for enthusiastic students (see ((http://code.google.com/support/bin/topic.py?topic=10727 SoC student requirements))) with a solid knowledge of PHP, who are interested in Semantic Web, Agile Knowledge Engineering and Folksonomy and Social Software Apps. \n\n((../SummerOfCode Implementation Ideas))\n\n===Student Application Form===\n{{gsocform}}" . . . . "2007-05-18T14:46:32"^^ . "==RWT: RDF/OWL-Web-Template-Engine==\nA template-engine for Semantic Web applications.\n\n{{toc from=h2 to=h4}}\n\n===Download==\nThe current version is available at the ((http://powl.svn.sourceforge.net/viewvc/powl/trunk/rwt/ Sourceforge-SVN))\n\n===Installation==\nRequirements: \npowl has to be installed\nPHP Version >= 5.2\n\nTo use the RWT you have to do this:\n%%(php)\nload_Template(\"../templates/example1.rwt\", \"../data/PeriodicTable.owl\", true); # Load the Template\n?>\n%%\n\n===Tutorial==\n\n====Basic structure of the RWT-files====\nThe RWT-files contain a fragment of a HTML-file with some additional ####-tags to start queries, these tags can also be nested and some command-lines enclosed by { } to edit or just print out the data as HTML-code\n\nIt is also possible to insert php-code in the template by using #### (like in a normal php-script)\n\nThe RWT-command-lines(##{...}##) can appear theoretically almost everywhere in the template, but not in the php-code\n(there they will treated as normal php-code and will probably cause an error) and \nwithin a ####-tag only in the attribute-strings: i.e. ##xml:lang = \"{ $language }\"## or ##limit = \" {$offset } { $count }\"##\n\n====Description of the ##load_Template##-function====\n##load_Template( $filename , $default_source = \" \", $load_post_get_vars = false)##\n\nfilename - name and path of the template-file\n(optional) default_source can be an RDF/OWL-model-object, name of a powl-model, a web-address or path/filename to an RDF/OWL-File it will be the default-source in the templates, replaces eventually an other default-source\n\n(optional) ##$load_post_get_vars## - if true, then the content of the _POST/_GET - array can be used as variables inside the templates\n\narray-keys considered as variable-names, if there are already variables with the same name, they will be replaced\n\n====Structure and function of the ####-tag====\n%%(html)\n\n...\n\n%%\n\nAt the position of this tag, the query stored in the ##query## attribute will performed immediately on the given source in the language given by the ##language## attribute. The results of the query can be filtered by using the ##xml:lang##, ##rdf:datatype##, ##distinct## and the ##limit## attribute. The behavior can controlled by the ##debug## and the ##loop## attribute.\n\n#|| \n|| **attributes** | **Description** ||\n||//source//|filename or URI\nRDF/OWL-source if there is a default-source given and you want to query the default-source then the attribute 'source' is not necessarily||\n\n||//language// | \"triple\" or \"sparql\"\n\"triple\" is the default-query-language, so you want to use this language then this attribute is not necessarily||\n\n|| //query// | The query, which you want to do\nif the language is \"triple\" , it has this format: $subject $predicate $object\nif the language is \"sparql\", it must be a valid sparql-query-string\ndefault: \"?subject ?predicate ?object\" - get all triples of the given model||\n\n|| //xml:lang// | if some of the data has an language-flag ,which should be taken? i.e. \"de\", \"en\", \"nl\" etc.\ndefault: empty||\n\n|| //rdf:datatype// | URI + dataytpe ( integer, float etc.) or namespace-prefix:datatype\ndefault: empty||\n\n|| //debug// | if \"on\" shows some more error-messages, if an error occur. \"off\" is default||\n\n|| //distinct// | \"all\" - all complete datasets in the query-results are unique\n\"variable_name1, variable_name2, ...\" - the values of the given\nvariable-combination are unique\ndefault: empty||\n\n|| //limit// | \"count\" - how many values are needed (at most)\n\"offset count\" - how many values are needed (at most) from the given \noffset, if 'offset' + 'count' > number of values then the returned number of values will be less then 'count'\ndefault: empty||\n\n|| //loop// | \"on\"/\"off\" - \"on\" is default\n\"on\" - for each returned dataset from a query the source-code between the current -tag and\nthe respective will be repeated and the variables filled by the query-result contain only the values of the current dataset\n\"off\" - the ...- block will not repeated and the variables filled by the query-result contain an array of all respective values in the datasets ||\n||# \n\n====First Steps with the RWT====\n=====A simple example=====\nTo initialize the RWT-classes and to load a Template we need a php-script:\n%%(php)\n\n\n \n A Simple Example for RWT\n \n \nload_Template(\"../templates/example1.rwt\", \"../data/PeriodicTable.owl\", true);\n?>\n\n%%\n\nThe file ##\"\"PeriodicTable.owl\"\"## contains data we want to query and ##example1.rwt## is our template-file, it contains following code:\n%%(html)\n

Element: { $elements }

\n%%\n\n##\"\"PeriodicTable.owl\"\"## contains information about some chemical elements the information block for every element is an instance of the class ##Element## in the namespace ##\"\"http://www.daml.org/2003/01/periodictable/PeriodicTable#\"\"##.\n\nOur template just prints out the name of every element listed in this file (actually URI+element-name) the ####-tag contains the query that is necessarily to get this information.\n\nThe query is:\n%%prefix table: http://www.daml.org/2003/01/periodictable/PeriodicTable#>\n$elements rdf:type table:Element’%%\n\nOur source is ##\"\"PeriodicTable.owl\"\"## but since we already have set this file as the default-source by passing its to the function ##load_Template## we don’t need the attribute.\n\nThe code between #### and #### will repeated as many times as values were returned by the query and the variables defined by the query-result (here: ##$elements## ) contains in every iteration the current value. The generated HTML-code of our example looks like this:\n%%(html)\n

Element: http://www.daml.org/2003/01/periodictable/PeriodicTable#H

\n

Element: http://www.daml.org/2003/01/periodictable/PeriodicTable#He

\n...%%\n\nBut a line like: ##http://www.daml.org/2003/01/periodictable/PeriodicTable#H## doesn’t look readable for many people so we change the line ##{ $elements }## to ##{ $elements | cut_URI }## and it looks better. ##cut_URI## is a modifier and removes the namespace-URI or the prefix at the beginning of a string. For a description of modifiers look to paragraph ((#stdmodifiers Standard modifiers)).\n\n=====A little more complicated example=====\nNow we can list all elements but we want to know also the details about them We must make a query of every single element to get the properties and their values. So we can use nested ####-tags:\n%%(html)\n $elements rdf:type table:Element \" >\n
\n
\n

Element: { $elements | cut_URI }

\n
\n
\n \n \n \n { $property $value | trow }\n \n \n
\n
\n
\n%%\n\nThe first query is limited to 10 datasets for the result, and the 'distinct'-attribute we have set to \"all\" to make sure all datasets are distinctive. The query in the inner ####-tag (the 2nd tag) means: get all properties (stored in ##$property##) and values (stored in ##$value##) of all resources that are equal to the values of ##$elements##, in our case there is only one value at a time, this is the current element the line ##{$property $value | trow }## means: build a HTML table-row with the current values of the variables ##$property## and ##$value## as table column; ##trow## is another modifier.\n\nThe generated output is the a list of all element-names on the left side and for each element a table with detailed information on the right side.\n\n=====Sparql query-example=====\nWe take a part of the template-file ##example3.rwt##\n%%(html)\n \n { $property | cut_URI | $label }\n\n \n \n\n { $label $value | trow \"noempty\" \"align=\\\"left\\\" style='font-weight: bold'\" }\n \n
%%\n\nThe query in the first #### tag means: Get the value of certain properties (stored in ##$address_prop##) of a certain resource (stored in ##$selectedInstance##). The part after the ##;## is useful to list explicitly the properties again (and only these, for which the query was successful). The quotes before the { and } are necessarily, because without it the RWT-parser treated it as a RWT-command-line and it will cause an error.\n\nWith the command-line ##{ $property | cut_URI | $label }##, we assign the shortened value of $property to the variable ##$label##. The 2nd query is to obtain the label for the current property, by setting the ##xml:lang##-attribute we set the language filter for the label (possible here: ##nl## or ##en##). If this inner query fails (because there is no label in a certain language for that property) the value of the variable ##$label## is not changed. So we would still have a valid value to work with.\n\nThe line ##{$label $value | trow \"notempty\" \"align=\\\"left\\\" style='font-weight: bold'\" }## builds a table-row.\n\nFor more a detailed information of the SPARQL-query-language see here:\nhttp://www.w3.org/TR/rdf-sparql-query/\nhttp://www.dajobe.org/2005/04-sparql/SPARQLreference-1.8.pdf\nhttp://www.xml.com/pub/a/2005/11/16/introducing-sparql-querying-semantic-web-tutorial.html\n\n====='Minimum-query' example=====\nIf the ##triple##-queries and the sparql-queries are still to complicated, then we can use the ##->## operator: ##resource->property## (both ##resource## and ##property## can be a variable or a constant like ##foaf:name##).\nThe operator means: Get the values for the given property of the given resource.\n\nWe could do the last example also with:\n##{ $language | $DEFAULT_LANGUAGE }## - necessarily make the ##->##-operator to filter the languages of the labels\n##{ $address_prop->'rdfs:label' $selectedInstance->$address_prop | trow \"notempty\" \"align=\\\"left\\\" style='font-weight: bold'\" }##\n\nSpecial cases:\n##resource->*## gets the values of all properties of this resource\n##resource->?## gets all properties of this resource\n\n====Variables====\nVariables in the RWT can be strings, objects one-dimensional arrays of these datatypes\n\n=====Query-Results=====\nThe Results of each query are stored in ##$variables##. These variables are instances of the class ##Crwt_object##. Right now, these objects contain three variables: ##value##, ##language## and ##datatype##. ##language## means not the query-language, but the language of text in ##value##. If the values of any variables are printed or used for operations, only ##value## is used.\n\n=====Using external variables=====\nIf we want to use data from the php-script inside the templates then we uses the function ##set_var##:\n##$rwt->set_var( $var_name , $var_value );##\n\n##$var_value## can be a string, an object or an one-dimensional array with elements of these datatypes.\n\n=====Variable operations=====\nThese operators between variables are allowed so far:\n\n#||\n|| **Operation** | **Operator** | **Description** ||\n|| Difference | / | $var1 / $var2 removes all elements from var1, which \nalso elements of var2 ||\n|| Intersection | & | $var1 & $var2 removes all elements which are not elements of both var1 and var2 ||\n|| Merge | + | $var1 + $var2 merges all elements of both variables ||\n|| Query | -> | $var1 -> $var2 - performs a 'simple'-query (var1,var2 can also be constant values of the format: namespace-prefix:property)\nlook for the simple query -description ||\n|| Assignment | \"\"|\"\" | this operator is actually meant to pass values in the execution-pipe, but if an variable is part of the pipe then the operator is equal to an assignment ||\n||#\n\nInstead of ##$var1## or ##$var2##, it is also possible to use a string-constant enclosed in ##'...'##.\n\n=====Variable modifiers=====\nModifiers are used to change the value or the format(##cut_URI##, ##transform_URI##) of variable generate often used HTML-elements (##select_list##, ##trow##, ##set_links##) with the values of these elements.\nYou can build a modifier-pipe: ##{ $var1 $var2 | cut_URI | trow }##\nIf you put a variable name at the end of a pipe, then you make an assignment: ##{ $var1 | cut_URI | $var2 }##\nIf there is more than one source-variable, then the other variables will be ignored for the assigment.\n\n{{a name=\"stdmodifiers\"}}\n======Standard-modifiers======\nList and description of the standard-modifiers for the RWT:\n\n#||\n|| **Modifier** | **Description** ||\n|| //list// | just prints all values from the given argument ||\n|| //select// | creates a HTML-select-list\nhas one optional argument: a string that contains the name of this element in a HTML-Form without this argument the name 'select_list'+select-list-nr is default (select-list-nr is a internal counter) ||\n|| //set_links// | if the data is an internet- or email-address it creates a link .... ||\n|| //trow// | prints the data as table-rows value \nhas optional arguments: \n1. \"notempty\" or ''\n'' if \"notempty\" is set, all cells may not contain the empty string\n2.-n+1.: attribute-string for the -tags, where n is the number of cells in a row\nexample: { $var1 $var2 \"\"|\"\" trow \"\"|\"\" \"notempty\" \" style=\\\"font-weight: bold\\\" \" }\nthe text in the left column is written bold, and no cell may contain '' ||\n|| //transform_URI// | \"\"if data has the format \"namespace-URI/predicate\" then it changes the URI(if known) to the respective prefix\"\" ||\n|| //cut_URI// | \"\"if data has the format \"namespace-URI/property\" or \"prefix:property\" then it removes the URI or the prefix from the beginning of the data-string\"\" ||\n||#\n\n======Define your own modifier======\nTo define a modifier we use this function: ##$rwt->define_modifier( $modifier_name, $modifier_function, $modifier_class = NULL)##\n\n##modifier_name## - string\n##modifier_function$$ - string, if this function is a method of a class, ##modifier_class## may not be ##NULL##\n(OPTIONAL) ##modifier_class## - object, if != ##NULL## ##modifier_functionname## must be a method of this class\n\nThe ##modifier_function## needs at least two arguments: \n1st - a reference to the rwt-object, to have acces to some internal function like ##get_var_values##\n2nd - an array of values of RWT-variables\nIf you just want to print out the content of some variable, then you dont need to return any value.\n\nBut if you want to use the result of a modifier as input for another one or to assign a value to a variable then you must return these values in the same format as the 2nd argument, but with changed values of course.\n\nExample 1: This function just prints a table, a column for each variable in ##value_arr##:\n\n%%(php)\\n\";\n foreach ($value_arr as $column) {\n echo \"

\\n\";\n $i=0;\n foreach ($rwt->get_var_values($column) as $value) {\n if ($i>0) echo \"
\";\n echo $value;\n $i++;\n }\n echo \"

\\n\";\n }\n echo \"\\n\";\n}\n?>%%\n\nNow we define a modifier, using this function. You dont have to choose the same name for the modifier as for the function: ##$rwt->define_modifier( \"table\" ,\"table_func\");##\n\nNow we can use this modifier in a template: ##{ $var1 $var2 ... | another_table }##\n\nExample 2: This is the ##cut_URI## modifier that already is available in the RWT\n\nIt doesn’t print out anything, but changes the input-values and returns it with changed values.\n%%(php) $orig_value) {\n $temp = $rwt->get_var_values($orig_value);\n foreach ($rwt->RDF_prefixes_default as $prefix => $URI) {\n $pattern[] = '/^'.preg_quote( $prefix, \"/\").'[:](.*)/';\n $replace[] = '\\\\1';\n $pattern[] = '/^'.preg_quote( $URI, \"/\").'(.*)/';\n $replace[] = '\\\\1';\n }\n $temp = preg_replace( $pattern, $replace, $temp);\n $rwt->set_var_values( $columns[$key], $temp);\n }\n return $columns;\n}\n?>%%\n\nBecause this function is a method of the class ##Cmodifiers##, you need to pass an instance of this class along with the function-name to ##define_modifier##- \n\n##$this->rwt_modifiers = new Cmodifiers();##\n##$this->define_modifier( \"cut_URI\", 'cut_URI', $this->rwt_modifiers );##\n\n=====Standard variables=====\nThere are a couple variables already defined by the rwt-class. Because they're needed for some functions.\n#|| \n||variable-name | content||\n|| //THIS_FILE// | contains the value of the php-variable \"$_SERVER['PHP_SELF']\" ||\n|| //EMPTY// | '' ||\n|| //DEFAULT_LANGUAGE// | contains a language shortcut, like in the xml:lang-attribute of the -tag important only for the 'minimum'-queries\ndefault: '' ||\n|| //DEFAULT_DATATYPE// | contains the datatype-URI, like in the rdf:datatype-attribute of the -tag important only for the 'minimum'-queries\ndefault: '' ||\n ||#\n\n===RWT - Developers===\nKristian Völpel (Mail: mailto:voelpel@nullacht.biz )\n\n**Thanks to**\nSören Auer\nMichael Martin\n" . . . . "2007-03-13T00:26:58"^^ . "{{vcard name=\"sn\" value=\"Dietzold\"}}" . . . . "2007-03-13T00:22:32"^^ . "{{vcard name=\"sn\" value=\"Auer\"}}" . . . . "2007-03-13T00:28:16"^^ . "{{vcard name=\"cn\" value=\"Jens Lehmann\"}}" . . . . "2008-06-30T18:28:59"^^ . "{{Include page=\"/Projects/Box\" divclass=\"floatbox\" nomark=\"1\"}}\n==Downloads==\n{{toc}}\n{{a name=\"OntoWiki\"}}\n===~OntoWiki===\nOntoWiki can be downloaded at our \n<#OntoWiki Download Area#>\n\nEvery ~OntoWiki Release contains all necessary components (Erfurt, Zend, RAP, ...) in one single package so you don't need to download another file for using ~OntoWiki.\n\nIf you want to use a bleeding edge version, you can install ~OntoWiki from our ((/Projects/OntoWiki/InstallFromSubversion Subversion Repository)).\n\n{{a name=\"xOperator\"}}\n===~xOperator===\nxOperator, our semantic agent for xmpp / jabber network can be downloaded at the\n<#xOperator Download Area#>\n\nIf you want to use a bleeding edge version, you can install ~xOperator from our ((/Projects/xOperator/InstallFromSubversion Subversion Repository)).\n\n===Powl===\nIf you want to use a stand-a