Full Professor
Computer Science Institute
University of Bonn
Lead Scientist & Coordinator of Dresden Branch
NetMedia Department
Fraunhofer IAIS
Member of Institute for Applied Informatics, Dresden / Leipzig
Profiles: LinkedIn, Google Scholar, DBLP, 
Web-ID
Offices
Room 1.022
Endenicher Allee 19a, 53115 Bonn, Germany
University of Bonn, Computer Science
Tel:+49 228 73-4315
Zwickauer Straße 46
01069 Dresden, Germany
Fraunhofer IAIS
Short CV
Prof. Dr. Jens Lehmann (http://www.jens-lehmann.org) leads the „Smart Data Analytics“ research group at the University of Bonn and Fraunhofer IAIS with approximately 40 researchers and is lead scientist at Fraunhofer IAIS in the Enterprise Information Systems department. His research interests involve Semantic Web, machine learning, question answering & dialogue systems, distributed computing and knowledge representation. Prof. Lehmann authored more than 120 articles in international journals and conferences, 50 of those in A level venues winning 12 best paper awards. His articles are cited more than 20000 times. In several major conferences and journals, he has leading positions. He is founder, leader or contributor of several community research projects, including SANSA, AskNow, DL-Learner, DBpedia and LinkedGeoData. Previously, he completed his PhD with „summa cum laude“ at the University of Leipzig with visits to the University of Oxford.
Research Interests
- Machine Learning
- Semantic Web & Knowledge Graphs
- Conversational AI
Publications
2011
RAVEN - active learning of link specifications Inproceedings
In: Proceedings of the 6th International Workshop on Ontology Matching, Bonn, Germany, October 24, 2011, CEUR-WS.org, 2011.
ReDD-Observatory: Using the Web of Data for Evaluating the Research-Disease Disparity Inproceedings
In: Proceedings of the 2011 IEEE/WIC/ACM International Conference on Web Intelligence, WI 2011, Campus Scientifique de la Doua, Lyon, France, August 22-27, 2011, pp. 178–185, IEEE Computer Society, 2011.
Class expression learning for ontology engineering Journal Article
In: J. Web Semant., vol. 9, no. 1, pp. 71–81, 2011.
Learning of OWL Class Expressions on Very Large Knowledge Bases and its Applications Incollection
In: Semantic Services, Interoperability and Web Applications - Emerging Concepts, pp. 104–130, CRC Press, 2011.
2010
Update Strategies for DBpedia Live Inproceedings
In: Proceedings of the Sixth Workshop on Scripting and Development for the Semantic Web, Crete, Greece, May 31, 2010, CEUR-WS.org, 2010.
I18n of Semantic Web Applications Inproceedings
In: The Semantic Web - ISWC 2010 - 9th International Semantic Web Conference, ISWC 2010, Shanghai, China, November 7-11, 2010, Revised Selected Papers, Part II, pp. 1–16, Springer, 2010.
HANNE - A Holistic Application for Navigational Knowledge Engineering Inproceedings
In: Proceedings of the ISWC 2010 Posters & Demonstrations Track: Collected Abstracts, Shanghai, China, November 9, 2010, CEUR-WS.org, 2010.
ORE - A Tool for Repairing and Enriching Knowledge Bases Inproceedings
In: The Semantic Web - ISWC 2010 - 9th International Semantic Web Conference, ISWC 2010, Shanghai, China, November 7-11, 2010, Revised Selected Papers, Part II, pp. 177–193, Springer, 2010.
Extracting reduced logic programs from artificial neural networks Journal Article
In: Appl. Intell., vol. 32, no. 3, pp. 249–266, 2010.
Concept learning in description logics using refinement operators Journal Article
In: Mach. Learn., vol. 78, no. 1-2, pp. 203–250, 2010.
Creating knowledge out of interlinked data Journal Article
In: Semantic Web, vol. 1, no. 1-2, pp. 97–104, 2010.
Learning OWL Class Expressions Book
IOS Press, 2010, ISBN: 978-1-60750-528-0.
2009
DBpedia - A Linked Data Hub and Data Source for Web Applications and Enterprises Inproceedings
In: Proceedings of Developers Track of 18th International World Wide Web Conference (WWW 2009), April 20th-24th, Madrid, Spain, 2009.
Ideal Downward Refinement in the EL Description Logic Inproceedings
In: Inductive Logic Programming, 19th International Conference, ILP 2009, Leuven, Belgium, 2009.
Ideal Downward Refinement in the EL Description Logic Technical Report
University of Leipzig 2009.
DBpedia Live Extraction Inproceedings
In: On the Move to Meaningful Internet Systems: OTM 2009, Confederated International Conferences, CoopIS, DOA, IS, and ODBASE 2009, Vilamoura, Portugal, November 1-6, 2009, Proceedings, Part II, pp. 1209–1223, Springer, 2009.
RelFinder: Revealing Relationships in RDF Knowledge Bases Inproceedings
In: Semantic Multimedia, 4th International Conference on Semantic and Digital Media Technologies, SAMT 2009, Graz, Austria, December 2-4, 2009, Proceedings, pp. 182–187, Springer, 2009.
LinkedGeoData: Adding a Spatial Dimension to the Web of Data Inproceedings
In: The Semantic Web - ISWC 2009, 8th International Semantic Web Conference, ISWC 2009, Chantilly, VA, USA, October 25-29, 2009. Proceedings, pp. 731–746, Springer, 2009.
Triplify: light-weight linked data publication from relational databases Inproceedings
In: Proceedings of the 18th International Conference on World Wide Web, WWW 2009, Madrid, Spain, April 20-24, 2009, pp. 621–630, ACM, 2009.
Learning of OWL Class Descriptions on Very Large Knowledge Bases Journal Article
In: Int. J. Semantic Web Inf. Syst., vol. 5, no. 2, pp. 25–48, 2009.
DL-Learner: Learning Concepts in Description Logics Journal Article
In: J. Mach. Learn. Res., vol. 10, pp. 2639–2642, 2009.
DBpedia - A crystallization point for the Web of Data Journal Article
In: J. Web Semant., vol. 7, no. 3, pp. 154–165, 2009.
2008
DBpedia Navigator Inproceedings
In: ISWC Semantic Challenge Proceedings, 2008, (Semantic Web Challenge, International Semantic Web Conference 2008).
2007
A Refinement Operator Based Learning Algorithm for the ALC Description Logic Inproceedings
In: Inductive Logic Programming, 17th International Conference, ILP 2007, Corvallis, OR, USA, June 19-21, 2007, pp. 147–160, Springer, 2007, (Best Student Paper Award).
A Refinement Operator Based Learning Algorithm for the ALC Description Logic Technical Report
University of Leipzig 2007.
Towards Semantic based Requirements Engineering Inproceedings
In: Proceedings of the 7th International Conference on Knowledge Management (I-KNOW), 2007.
Semantisch unterstütztes Requirements Engineering Inproceedings
In: Proceedings of the SABRE-07 SoftWiki Workshop, 2007.
Discovering Unknown Connections - the DBpedia Relationship Finder Inproceedings
In: The Social Semantic Web 2007, Proceedings of the 1st Conference on Social Semantic Web (CSSW), September 26-28, 2007, Leipzig, Germany, pp. 99–109, GI, 2007.
SWORE - SoftWiki Ontology for Requirements Engineering Inproceedings
In: The Social Semantic Web 2007, Proceedings of the 1st Conference on Social Semantic Web (CSSW), September 26-28, 2007, Leipzig, Germany, pp. 111–118, GI, 2007.
What Have Innsbruck and Leipzig in Common? Extracting Semantics from Wiki Content Inproceedings
In: The Semantic Web: Research and Applications, 4th European Semantic Web Conference, ESWC 2007, Innsbruck, Austria, June 3-7, 2007, Proceedings, pp. 503–517, Springer, 2007.
Foundations of Refinement Operators for Description Logics Inproceedings
In: Inductive Logic Programming, 17th International Conference, ILP 2007, Corvallis, OR, USA, June 19-21, 2007, Revised Selected Papers, pp. 161–174, Springer, 2007.
Hybrid Learning of Ontology Classes Inproceedings
In: Machine Learning and Data Mining in Pattern Recognition, 5th International Conference, MLDM 2007, Leipzig, Germany, July 18-20, 2007, Proceedings, pp. 883–898, Springer, 2007.
DBpedia: A Nucleus for a Web of Open Data Inproceedings
In: The Semantic Web, 6th International Semantic Web Conference, 2nd Asian Semantic Web Conference, ISWC 2007 + ASWC 2007, Busan, Korea, November 11-15, 2007, pp. 722–735, Springer, 2007.
OntoWiki: A Tool for Social, Semantic Collaboration Inproceedings
In: Proceedings of the Workshop on Social and Collaborative Construction of Structured Knowledge (CKC 2007) at the 16th International World Wide Web Conference (WWW2007) Banff, Canada, May 8, 2007, CEUR-WS.org, 2007.