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

AKSW Colloquium, 27-04-2015, Ontotext’s RDF database-as-a-service (DBaaS) via Self-Service Semantic Suite (S4) platform via & Knowledge-Based Trust ( 2015-04-23T17:21:00+02:00 JoergUnbehauen)

2015-04-23T17:21:00+02:00 JoergUnbehauen

This colloquium features two talks. First the Self-Service Semantic Suite (S4) platform is presented by Marin Dimitrov (Ontotext), followed up by Jörg Unbehauens report on Googles effort on using factual correctness as a ranking factor. Read more about "AKSW Colloquium, 27-04-2015, Ontotext’s RDF database-as-a-service (DBaaS) via Self-Service Semantic Suite (S4) platform via & Knowledge-Based Trust"

Talk by Kleanthi Georgala ( 2015-04-22T22:48:27+02:00 by Dr. Amrapali Zaveri)

2015-04-22T22:48:27+02:00 by Dr. Amrapali Zaveri

Last week on Friday, 17th April, Kleanthi Georgala visited AKSW and gave a talk entitled “Traces Through Time: Probabilistic Record Linkage – Medieval and Early Modern”. More information below. Read more about "Talk by Kleanthi Georgala"

SAKE Projekt website goes live ( 2015-04-22T11:50:43+02:00 by Simon Bin)

2015-04-22T11:50:43+02:00 by Simon Bin

Hi all! The project website for the BMWi funded Smart Data Web Project “SAKE” is now on-line at www.sake-projekt.de. Read more about "SAKE Projekt website goes live"

AKSW Colloquium, 20-04-2015, OWL/DL approaches to improve POS tagging ( 2015-04-20T08:21:00+02:00 Markus Ackermann)

2015-04-20T08:21:00+02:00 Markus Ackermann

In this colloquium Markus Ackermann will touch on the ‘linguistic gap‘ of recent POS tagging endeavours (as perceived by C. Manning, [1]). Read more about "AKSW Colloquium, 20-04-2015, OWL/DL approaches to improve POS tagging"

AKSW Colloquium, 13-04-2015, Effective Caching Techniques for Accelerating Pattern Matching Queries ( 2015-04-13T11:51:58+02:00 by Claus Stadler)

2015-04-13T11:51:58+02:00 by Claus Stadler

In this colloquium, Claus Stadler will present the paper Effective Caching Techniques for Accelerating Pattern Matching Queries by Arash Fard, Satya Manda, Lakshmish Ramaswamy, and John A. Miller. Read more about "AKSW Colloquium, 13-04-2015, Effective Caching Techniques for Accelerating Pattern Matching Queries"