Dimitris Kontokostas

Dimitris Kontokostas
Depiction of Dimitris Kontokostas
Address Work
Augustusplatz 10, 04109 Leipzig
Email Office
Phone Work
+30-6945796255
Fax Work
+49-341-97-32329

@GitHub @Google Scholar @Google+

I am a member of the Agile Knowledge Engineering and Semantic Web (AKSW) Research Group, in pursue of a PhD with a focus on Data Quality, DBpedia and Libraries.

In 2012 I started my PhD studies in the area of Semantic Web, funded by the Dutch national library organization (bibliotheek.nl). Part of my duties were to bootstrap, create and maintain the Dutch DBpedia (nl.dbpedia.org) with the aim to become a hub in the local Dutch LOD cloud. Besides DBpedia, my research focused on Linked Data quality. Along my research publications, I created RDFUnit, an innovative R&D framework for Unit-Testing RDF data that was successfully applied and tested on large scale RDF datasets (e.g. DBpedia, LCSH, LGD, Datos) and integrated in service validation stacks (e.g. NLP2RDF, DataID). RDFUnit is a research & work in progress with the aim to improve it's TRL.

I have been heavily involved in DBpedia, where in 2009 bootstrapped and co-lead the DBpedia Internationalization process. This lead in increasing the coverage of the DBpedia extraction framework to many languages and the the creation of the DBpedia internationalization committee. I created and maintained the Greek and Dutch DBpedia chapters. Since 2013 I took over DBpedia Live where I re-wrote and modularized the core live extraction framework. In addition I am one of the lead developers of the DBpedia Extraction Framework and assist in the coordination of the DBpedia (developer) community.

Since 2013 I lead the efforts of applying DBpedia as a GSoC organization and successfully coordinated many students and mentors in completing their projects. Some of the successfully GSoC projects that I mentored myself include the an Error DBpedia browser, the new DBpedia LD interface, Wikidata2DBpedia integration, porting the DBpedia extraction framework to Hadoop / Spark, extracting rich metadata from Wikimedia Commons.

In March 2014, we finally created a legal entity for DBpedia ( DBpedia Association ) where my active role is to coordinate the next technical directions of the project.

In addition, you can see my

Current Projects

  • DBpediaQuerying Wikipedia like a Semantic Database
  • DBpediaDQUser-driven quality evaluation of DBpedia
  • DBpediaDQCrowdCrowdsourcing DBpedia Quality Assessment
  • RDFUnitan RDF Unit-Testing suite
  • TripleCheckMateCrowdsourcing the evaluation of Linked Data

Publications

by (Editors: ) [BibTex of ]

News

Highlights of the 1st Meetup on Question Answering Systems – Leipzig, November 21st ( 2014-11-24T10:09:09+01:00 by Ali Khalili)

2014-11-24T10:09:09+01:00 by Ali Khalili

On November 21st, AKSW group was hosting the 1st meetup on “Question Answering” (QA) systems. In this meeting, researchers from AKSW/University of Leipzig, CITEC/University of Bielefeld, Fraunhofer IAIS/University of Bon, DERI/National University of Ireland and the University of Passau presented the recent results of their work on QA systems. Read more about "Highlights of the 1st Meetup on Question Answering Systems – Leipzig, November 21st"

Announcing GERBIL: General Entity Annotator Benchmark Framework ( 2014-11-20T10:08:33+01:00 RicardoUsbeck)

2014-11-20T10:08:33+01:00 RicardoUsbeck

Dear all, We are happy to announce GERBIL – a General Entity Annotation Benchmark Framework, a demo can be found at! With GERBIL, we aim to establish a highly available, easy quotable and liable focal point for Named Entity Recognition and Named Entity Disambiguation (Entity Linking) evaluations: GERBIL provides persistent URLs for experimental settings. Read more about "Announcing GERBIL: General Entity Annotator Benchmark Framework"

@BioASQ challenge gaining momentum ( 2014-11-17T15:29:24+01:00 RicardoUsbeck)

2014-11-17T15:29:24+01:00 RicardoUsbeck

BioASQ is a series of challenges aiming to bring us closer to the vision of machines that can answer questions of biomedical professionals and researchers. The second BioASQ challenge started in February 2013. It comprised two different tasks: Large-scale biomedical semantic indexing (Task 2a), and biomedical semantic question answering (Task 2b). Read more about "@BioASQ challenge gaining momentum"

AKSW successful at #ISWC2014 ( 2014-10-28T17:03:42+01:00 RicardoUsbeck)

2014-10-28T17:03:42+01:00 RicardoUsbeck

Dear followers, 9 members of AKSW have been participating at the 13th International Semantic Web Conference (ISWC) at Riva del Garda, Italy. Read more about "AKSW successful at #ISWC2014"

AKSW internal group meeting @ Dessau ( 2014-10-23T02:07:29+02:00 EdgardMarx)

2014-10-23T02:07:29+02:00 EdgardMarx

Recently AKSW members were at the city of Dessau for an internal group meeting. The meeting took place between 8th and 10th of October, in the modern university of architecture of Bauhaus were we also stayed hosted. Bauhaus is located in the city of Dessau, about one hour from Leipzig. Read more about "AKSW internal group meeting @ Dessau"