"Analyzing the Collaborative Writing Process in Wikipedia - Case Studies at UKP Lab", National Centre for Text Mining, Manchester Interdisciplinary Biocentre, University of Manchester, UK, November 2012.
"Digital Research Infrastructures and Resources at UKP Lab", Max-Planck-Institute for Psycholinguistics, Nijmegen, The Netherlands, October 2012.
"Meaning-centered Natural Language Processing research at UKP Lab", The Knowledge and Language Engineering Laboratory (KLE), Pohang University of Science and Technology, Pohang, Republic of Korea, July 2012.
"How to UBY - a Large-Scale Unified Lexical-Semantic Resource", Keynote Speaker at LREC 2012 Workshop "Mergin of Language Resources", Istanbul, Turkey, May 2012.
"How to UBY - a Large-Scale Unified Lexical-Semantic Resource", SAPIENZA Universita' di Roma, Roma, Italia, April 2012.
"UBY - A Large-Scale Unified Lexical-Semantic Resource Based on LMF", University of Heidelberg, Institute for Computational Linguistics, Heidelberg, Germany, Februar 2012.
"Automatic Text Analysis for eHumanities", University of Vienna, Faculty of Computer Science, Vienna, Austria, June 2011.
"Wikabularies and the like - Community-Based Knowledge Resources on the Web", Universität Leipzig, Institute for Computer Science, Leipzig, Germany, January 2011.
"Wikulu: Information Management in Wikis Enhanced by Language Technologies", 10. Konferenz zur Verarbeitung natürlicher Sprache (KONVENS), Saarbrücken, Germany, September 2010.
"Wikabularies and the like - Community-Based Knowledge Resources on the Web", 9th International Conference on Ontologies, DataBases, and Applications of Semantics (ODBASE 2010), Crete, Greece, July 2010.
“Semantic Information Retrieval Using Novel Lexical Semantic Resources – Results of the DFG-Project SIR”, GESIS - Leibniz-Institut für Sozialwissenschaften, Bonn, Germany, February 2010.
“Collective Intelligence for Applied Lexical Semantic Processing - Can We Actually Learn from the "Crowds" on the Web?”, Max Planck Institute Saarbrücken, Germany, October 2009.
“Socio-Semantic Web Meets NLP: Wikipedia and Wiktionary as Lexical-Semantic Resources”, Knowledge Media Institute, the Open University, Milton Keynes, United Kingdom, May 2009.
“Educational Natural Language Processing: Intelligent Methods of Language Understanding for Educational Applications”, German Institute for International Pedagogical Research (DIPF), Frankfurt am Main, March 2009.
“Exploiting Crowdsourced Language Resources for Natural Language Processing: 'Wikabularies' and the Like”, FLaReNet (Fostering Language Resources Network) Launching Event of the European Commission, Vienna, Austria, February 2009.
“Socio-Semantic Web Meets NLP: Wikipedia and Wiktionary as Lexical-Semantic Resources”, Institute for Linguistics, University of Postdam, December 2008.
“Putting the 'Wisdom-of-Crowds' to Use in NLP: Collabratively Constructed Semantik Resources on the Web”, NSF-Sponsored Symposium on Semantic Knowledge Discovery, Organization and Use, New York State University, USA, November 2008.
“Using Wikipedia and Wiktionary as Knowledge Sources in Lexical Semantic Processing”, IBM Thomas J. Watson Reaearch Center Human Language Technology Group, Hawthorne, USA, November 2008
“Learning from the Web to Enhance the Web: Semantic Knowledge for Management of Unstructured Text”, Department of Computer Science, University of Mannheim, November 2008.
“Putting the 'Wisdom-of-Crowds' to Use in NLP: Collabratively Constructed Semantik Resources on the Web”, Department of Computer Sciende, University of Toronto, Canada, October 2008.
“Media Usage Research in the Social Web: Analysis of Questions in Social Question Answering Services”, Department of Philological Sciences, University of Tübingen, October 2008.
“Semantic Search and Text Mining in Web 2.0”, Informatik-Akademie / skill:forum, IBM Education Center, October 2008.
“Computing Semantic Relatedness of Words”, Department of Information and Communication Sciences. University of Hildesheim, Germany. February 2008.
“Wisdom of Crowds against Wisdom of Linguists -Computing Relatedness of Words”, Guest Lecture Series of the Collaborative Research Center (Sonderforschungsbereich, SFB) 732 "Incremental specification in context" at the University of Stuttgart, Germany. November 2007.
“Educational Natural Language Processing”, Workshop “Natural Language Processing and Knowledge Representation for eLearning environments”, in conjunction with Recent Advances in Natural Language Processing 2007 Conference, Borovetz, Bulgaria. September 2007.
“Integrating Semantic Knowledge into Text Similarity and Information Retrieval”, 1st IEEE International Conference on Semantic Computing, Irvine, USA. September 2007.
“Computing Semantic Relatedness based on GermaNet and Wikipedia with an Application to Information Retrieval”, Department of Linguistics and Literature. University of Bielefeld, Germany. April 2007.
“Semantic Information Retrieval on the Basis of an Extended GermaNet”, Workshop „Multilingual semantic annotation: theory and applications”, organized by SALSA-Project in Saarbrücken and Charles Fillmore’s FrameNet-Project in Berkeley as part of the Transcoop-Program funded by Alexander von Humboldt Foundation, University of Saarbrücken, Germany. June 2006.
“Semantic Similarity Applied to Dialogue Summarization”, Institute of Cognitive Science. University of Osnabrück, Germany. September 2004.
“Ontology Design and Deployment in Complex Dialogue Systems”. SFB/TR 8 “Spatial Cognition”, University of Bremen, Germany. May 2004.
“Development and Deployment of the Ontology in SmartKom, a Multimodal Dialogue System”, Institute for Computer Science and Interactive Systems. University of Duisburg-Essen, Germany. November 2003.
“EML Research: Natural Language Processing and Beyond”, International Studies of Computational Linguistics, University of Tübingen, Germany. November 2003.
“Talking Map: Know-How and Know-That”, COMIC Workshop at Eurospeech’2003, Geneva. September 2003.
“Identifying Best Speech Recognition Hypotheses Using an Ontology”, IBM Thomas J. Watson Research Center, Human Language Technology Group. Yorktown Heights, New York, USA. July 2003.
“Ontologies and Their Applications in Multi-Modal Dialogue Systems”, Division of Computational Linguistics, University of Tübingen, Germany. July 2003.