Prof. Dr. Jens Lehmann

RDF Extraction

The existence of the Semantic Web does not mean that the majority of information is still kept in unstructured or semi-structured format. Converting this information to RDF is a major goal of Semantic Web research. I started to work in this area when I supervised the thesis of Jörg Schüppel about extracting information from Wikipedia infoboxes together with Sören Auer. A few month later this became the code base for the widely used DBpedia project. Apart from DBpedia, we also perform data conversion in the LinkedGeoData and NLP2RDF projects.

Journal Publications

• "Wikidata through the Eyes of DBpedia"
  Ali Ismayilov, Dimitris Kontokostas, Sören Auer, Jens Lehmann, Sebastian Hellmann
  Semantic Web Journal, pages 1-11, IOS Press, 2017
  
  • download: PDF (246.6 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "Increasing the Financial Transparency of European Commission Project Funding"
  Michael Martin, Claus Stadler, Philipp Frischmuth, Jens Lehmann
  Semantic Web Journal, volume 5, number 2, pages 157-164, IOS Press, 2014
  
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  
  
• "Publishing and Interlinking the Global Health Observatory Dataset"
  Amrapali J. Zaveri, Jens Lehmann, Sören Auer, Mofeed Hassan, Mohamed Sherif, Michael Martin
  Semantic Web Journal, volume 4, number 3, pages 315-322, IOS Press, 2013
  
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  
  
• "DBpedia - A Crystallization Point for the Web of Data"
  Jens Lehmann, Chris Bizer, Georgi Kobilarov, Sören Auer, Christian Becker, Richard Cyganiak, Sebastian Hellmann
  Journal of Web Semantics, 2009
  
  • download: PDF (1.2 MB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage, DBpedia Query Builder, DBpedia Relationship Finder
  • Journal of Web Semantics Award (Most Cited Article 2006-2010)
  
  

Conference Publications

• "DBpedia FlexiFusion: the Best of Wikipedia > Wikidata > Your Data"
  Johannes Pfeffer, Marvin Hofer, Daniel Obraczka, Jens Lehmann, Sebastian Hellmann
  In: Proceedings of the 18th International Semantic Web Conference (ISWC), 2019
  
  • download: PDF (504 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "Sustainable Linked Data Generation: The Case of DBpedia"
  Wouter Maroy, Anastasia Dimou, Dimitris Kontokostas, Ben De Meester, Jens Lehmann, Erik Mannens, Sebastian Hellmann
  In: Proceedings of the 16th International Semantic Web Conference (ISWC), Springer, 2017
  
  • download: PDF (522.8 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "DBpedia Commons: Structured Multimedia Metadata from the Wikimedia Commons"
  Gaurav Vaidya, Dimitris Kontokostas, Magnus Knuth, Jens Lehmann, Sebastian Hellmann
  In: Proceedings of the 14th International Semantic Web Conference (ISWC), pages 281-289, Springer, 2015
  
  • download: PDF (268.3 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "Unsupervised Learning of an Extensive and Usable Taxonomy for DBpedia"
  Marco Fossati, Dimitris Kontokostas, Jens Lehmann
  In: Proceedings of the 11th International Conference on Semantic Systems, pages 177-184, ACM, 2015
  
  • download: PDF (277.9 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "User-driven Quality Evaluation of DBpedia"
  Amrapali J. Zaveri, Dimitris Kontokostas, Mohamed Sherif, Lorenz Bühmann, Mohamed Morsey, Sören Auer, Jens Lehmann
  In: Proceedings of the 9th International Conference on Semantic Systems (I-Semantics), ACM, 2013
  
  • download: PDF (163.5 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "DBpedia - A Linked Data Hub and Data Source for Web Applications and Enterprises"
  Georgi Kobilarov, Chris Bizer, Sören Auer, Jens Lehmann
  In: Proceedings of Developers Track of 18th International World Wide Web Conference, 2009
  
  • download: PDF (920.5 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "LinkedGeoData - Adding a Spatial Dimension to the Web of Data"
  Sören Auer, Jens Lehmann, Sebastian Hellmann
  In: Proc. of 7th International Semantic Web Conference ISWC, Lecture Notes in Computer Science, volume 5823, pages 731-746, Springer, 2009
  
  • download: PDF (453.9 KB)
  • formats: BibTeX, RDF
  • related info pages: Spatial Data in the Semantic Web, RDF Extraction
  • related weblinks: LinkedGeoData homepage
  
  
• "DBpedia Live Extraction"
  Sebastian Hellmann, Claus Stadler, Jens Lehmann, Sören Auer
  In: Proceedings of the 8th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE), Lecture Notes in Computer Science, volume 5871, pages 1209–1223, Springer, 2009
  
  • download: PDF (281.1 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "DBpedia: A Nucleus for a Web of Open Data"
  Sören Auer, Chris Bizer, Georgi Kobilarov, Jens Lehmann, Richard Cyganiak, Zachary Ives
  In: Proceedings of the 6th International Semantic Web Conference (ISWC), Lecture Notes in Computer Science, volume 4825, pages 722-735, Springer, 2008
  
  • download: PDF (1.2 MB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  • 10 Year Best Paper Award
  
  
• "Discovering Unknown Connections - the DBpedia Relationship Finder"
  Jens Lehmann, Jörg Schüppel, Sören Auer
  In: Proceedings of the 1st SABRE Conference on Social Semantic Web (CSSW), 2007
  
  • download: PDF (247.5 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage, DBpedia Relationship Finder
  
  

Workshop Publications

• "Simplified RDB2RDF Mapping"
  Claus Stadler, Jörg Unbehauen, Patrick Westphal, Mohamed Sherif, Jens Lehmann
  In: Proceedings of the 8th Workshop on Linked Data on the Web (LDOW2015), Florence, Italy, CEUR-WS.org, 2015
  
  • download: PDF (528.7 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  
  
• "Update Strategies for DBpedia Live"
  Claus Stadler, Michael Martin, Jens Lehmann, Sebastian Hellmann
  In: 6th Workshop on Scripting and Development for the Semantic Web Colocated with ESWC, 2010
  
  • download: PDF (255.6 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  

Demos

• "A Vocabulary Independent Generation Framework for DBpedia and beyond"
  Ben De Meester, Anastasia Dimou, Dimitris Kontokostas, Ruben Verborgh, Jens Lehmann, Erik Mannens, Sebastian Hellmann
  In: Proceedings of 16th International Semantic Web Conference - Poster & Demos, Springer, 2017
  
  • download: PDF (328.8 KB)
  • formats: BibTeX, RDF
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "DBpedia Navigator"
  Jens Lehmann, Sebastian Knappe
  2008
  
  • download: PDF (527.2 KB)
  • formats: BibTeX, RDF
  • related info pages: Concept Learning in Description Logics, RDF Extraction
  • related weblinks: DBpedia Homepage, DL-Learner homepage
  
  

Presentations

• "The Linked Data Life-Cycle"
  Jens Lehmann, Lorenz Bühmann
  Invited Lecture Series at the ICCL Summer School 2013, 2013
  
  • download: not available
  • related info pages: Concept Learning in Description Logics, RDF Extraction, Ontology Maintenance
  • related weblinks: LOD2, GeoKnow homepage
  
  
• "LATC Datasets in the EU Data Cloud"
  Jens Lehmann
  1st European Data Forum, 2012
  
  • download: not available
  • related info pages: RDF Extraction
  • related weblinks: LATC, EDF 2012
  
  
• "Managing the Life-Cycle of Large Scale Web Datasets"
  Jens Lehmann, Sören Auer, Claus Stadler
  Keynote talk at the Joint Workshop on Knowledge Evolution and Ontology Dynamics at ISWC 2012, 2012
  
  • download: not available
  • related info pages: RDF Extraction, Ontology Maintenance
  • related weblinks: DBpedia Homepage, LinkedGeoData homepage, ISWC 2012
  
  
• "DEQA - Deep Web Extraction for Question Answering"
  Jens Lehmann
  11st International Semantic Web Conference, 2012
  
  • download: not available
  • related info pages: RDF Extraction
  • related weblinks: ISWC 2012
  
  
• "DBpedia Overview"
  Jens Lehmann
  Leipziger Semantic Web Tag, 2011
  
  • download: PDF (813.7 KB)
  • related info pages: RDF Extraction
  • related weblinks: DBpedia Homepage
  
  
• "LinkedGeoData Overview"
  Jens Lehmann, Claus Stadler
  Leipziger Semantic Web Tag, 2011
  
  • download: PDF (264 KB)
  • related info pages: Spatial Data in the Semantic Web, RDF Extraction
  • related weblinks: LinkedGeoData homepage
  
  
• "LinkedGeoData"
  Jens Lehmann, Sören Auer
  Semantic Web Challenge Entry (reached top 6), 2009
  
  • download: ODP (3.6 MB)
  • related info pages: Spatial Data in the Semantic Web, RDF Extraction
  • related weblinks: LinkedGeoData homepage, ISWC 2009
  
  
• "LinkedGeoData - Adding a Spatial Dimension to the Web of Data"
  Jens Lehmann, Sören Auer
  8th International Semantic Web Conference, 2009
  
  • download: ODP (3.2 MB)
  • related info pages: Spatial Data in the Semantic Web, RDF Extraction
  • related weblinks: LinkedGeoData homepage, ISWC 2009
  
  

Posters

• "LinkedGeoData"
  Jens Lehmann
  8th International Semantic Web Conference, 2009
  
  • download: PDF (819.8 KB)
  • related info pages: Spatial Data in the Semantic Web, RDF Extraction
  • related weblinks: LinkedGeoData homepage, ISWC 2009
  
  
• "DBpedia Navigator"
  Jens Lehmann, Sebastian Knappe
  7th International Semantic Web Conference, 2008
  
  • download: PDF (559.8 KB)
  • related info pages: Concept Learning in Description Logics, RDF Extraction
  • related weblinks: DBpedia Homepage, DL-Learner homepage, ISWC 2008