Events and Activities

Invited Keynotes, Tutorials, and Panels

LHD+SemQuant2012, Joint Workshop on Large and Heterogeneous Data and Quantitative Formalization in the Semantic Web, Boston, USA, November 2012. (invited panel member on "Making sense of the web of data")
Chesapeake Large-Scale Analytics Conference (CLSAC), Annapolis, MD, October 2012. (invited speaker and panelist on big data and ontologies)
Value Proposition of Ontology and Semantic Technology for the Earth Science Community, part of the ontolog Earth Science Ontology Dialog (EarthScienceOntolog), August 2012. (invited panelist and presenter on On the uptake of Semantic Web Technologies)
GeoVoCampSB2012, Santa Barbara, California, February 2012. (invited panel member on Big Data GIScience.)
Reasoning Web 2011 Summer School, Galway, Ireland, August 2011. (invited lecture on OWL and Rules)
OWLED2011, Eighth International Workshop on OWL: Experiences and Directions, San Francisco, CA, June 2011. (invited tutorial on OWL and Rules)
ICFCA2011, 9th International Conference on Formal Concept Analysis, Nicosia, Cyprus, May 2011. (invited keynote speaker)
Emerging Trends in Scholarly Publishing Seminar, Washington DC, April 2011. (invited speaker)
EDOC2010, Fourteenth IEEE International EDOC Conference, Vitoria, Brazil, October 2010. (invited tutorial on RDF, OWL, and Rules - had to be cancelled on short notice)
Linked AI, AAAI Spring Symposium "Linked Data Meets Artificial Intelligence", Stanford, CA, March 2010. (invited panel member on KR Needs For Linked Data - panel had to be canceled on short notice)
GeoS2009, Third International Conference on Geospatial Semantics (GeoS 2009), Mexico City, Mexico, December 2009. (conference keynote speaker on Semantic Web - Past, Present, and Future)
GeoS2009, Third International Conference on Geospatial Semantics (GeoS 2009), Mexico City, Mexico, December 2009. (invited tutorial on OWL 2 Rules)
KogWis 2008, Symposium on Neural-Symbolic Integration as a Means for Computational Cognition at the 9. Fachtagung der Gesellschaft für Kognitionswissenschaft, Dresden, Germany, September 2008. (invited speaker on Integrating Symbolic and Subsymbolic Cognitive Processing)
SWAP 2006, Semantic Web Applications and Perspectives, 3rd Italian Semantic Web Workshop, Pisa, Italy, December 2006. (invited speaker on Towards subsymbolic methods for semantic knowledge)
ISDT06, 4th International Symposium on Domain Theory. (invited speaker on Perspectives on Formal Concept Analysis: Domain Logics and Commonsense Reasoning)
ARW-05, Automated Reasoning Workshop, Edinburgh, UK, August 2005. (invited panel member on What contribution can automated reasoning make to e-Science?)
WPT 2002, Workshop on Proof Theory, Dresden, Germany, 2002. (invited speaker on Fixed-point Semantics for Logic Programming and Nonmonotonic Reasoning: A uniform approach)

Further presentations.

Steering Committee/Advisory Board

RR2013, Seventh International Conference on Web Reasoning and Rule Systems, Mannheim, Germany, 2013. (Steering Committee)
ICCS2013, 20th International Conference on Conceptual Structures, Mumbai, India, January 2013. (Editorial board member)
RR2012, Sixth International Conference on Web Reasoning and Rule Systems, Vienna, Austria, 2012. (Steering Committee Vice President)
ICCA 2012, International Conference on Computer Applications 2012, Pondicherry, India, January 2012. (Advisory Board member)
RR2011, Fifth International Conference on Web Reasoning and Rule Systems, Galway, Ireland, August 2011. (Steering Committee Vice President)
ICCS2010, 18th International Conference on Conceptual Structures, Kuching, Sarawak, Malaysia, July 2010. (Editorial board member)
RR2010, Fourth International Conference on Web Reasoning and Rule Systems, Bressanone, Italy, September 2010. (Steering Committee Vice President)
RR2009, Third International Conference on Web Reasoning and Rule Systems, Washington D.C., USA, October 2009. (steering committee vice-chair)
OWLED2009, OWL - Experiences and Directions, Sixth International Workshop, Washington D.C., USA, October 2009. (steering committee member)
ICCS2009, 17th International Conference on Conceptual Structures, Moscow, Russia, July 2009. (Editorial board member)
OWLED2008, OWL - Experiences and Directions, Fifth International Workshop, Karlsruhe, Germany, October 2008. (steering committee member)
RR2008, Second International Conference on Web Reasoning and Rule Systems, Karlsruhe, Germany, October 2008. (steering committee vice-chair)
ICCS2008, 16th International Conference on Conceptual Structures, Toulouse, France, July 2008. (Editorial Board member)
OWLED2008DC, Fourth Workshop OWL - Experiences and Directions, Washington D.C., April 2008. (steering committee member)
ICCS2007, 15th International Conference on Conceptual Structures. (editorial board member)
RR2007, First International Conference on Web Reasoning and Rule Systems. (steering committee vice-chair)
OWLED2007, Third Workshop OWL - Experiences and Directions. (steering committee member)

Editor-In-Chief

Semantic Web journal by IOS Press (Editor-in-Chief since 2009).
Book series Studies on the Semantic Web, IOS Press and AKA Verlag (Editor-in-Chief since 2009)

Editorial Boards

Logic Journal of the IGPL (editorial board member since 2009)
Journal of Artificial General Intelligence. (editorial board member since 2008)
Frontiers of Computer Science, Springer. (editorial board member since 2011)
the Scientific World Journal, Hindawi. (editorial board member since 2012)
International Journal of Conceptual Structures and Smart Applications, IGI Global. (editorial board member since 2012)
Book series Thinking Machines, Atlantis Press. (editorial board member since 2008)
Journal of Algorithms in Cognition, Informatics and Logic (editorial board member 2008-2009)
Journal Advances in Artificial Intelligence, Hindawi (editorial board member since 2007)
Book series Begabtenförderung im MINT-Bereich, Aegis-Verlag, Ulm, dealing with enhancement programmes (editorial board member since 2003)

Conference Programme Chair

ODBASE 2011, 10th International Conference on Ontologies DataBases, and Applications of Semantics, Heraklion, Crete (Greece), October 2010. (PC chair)
RR2010, Fourth International Conference on Web Reasoning and Rule Systems, Bressanone, Italy, September 2009. (PC Chair)
AGI-09, Second Conference on Artificial General Intelligence, Arlington, Virginia, March 2009. (PC chair)
ICCS06, 14th International Conference on Conceptual Structures. (PC chair)

Conference General Chair

RR2012, Sixth International Conference on Web Reasoning and Rule Systems, Vienna, Austria, 2011.

Summer School Chair

ICCL Summer School 2013 on Semantic Web - Ontology Languages and Their Use, Dresden, Germany, August 2013.

Conference Area/Track Chair

ESWC2013, 10th ESWC 2013, Montpellier, France, May/June 2013. (Chair of the reasoning track)
ESWC2011, 8th Extended Semantic Web Conference, Heraklion, Crete (Greece), May/June 2011. (Chair of the reasoning track)
ISWC2010, 9th International Semantic Web Conference, Shanghai, November 2010. (vice chair for in-use and industrial track)
KI 2009, 32nd Annual Conference on Artificial Intelligence, Paderborn, Germany, September 2009. (Area Chair Ontologies & Semantic Web)

Conference Workshops/Tutorials Chair

K-CAP 2013, 7th International Conference on Knowledge Capture, Banff, Alberta, Canada, June 2013. (Workshops and Tutorials chair)

Conference Sponsor Chair

ISWC 2013, 12th International Semantic Web Conference, Sydney, Australia, October 2013. (Sponsorships Chair)
RR2009, Third International Conference on Web Reasoning and Rule Systems, Washington D.C., USA, October 2009. (sponsor chair)
ESWC2009, 6th European Semantic Web Conference, May/June 2009, Heraklion, Crete (Greece). (sponsor chair)

Conference Organising Committee

GeoVoCampSB2013, Santa Barbara, CA, March 2013. (co-organizer)
GeoVoCampDayton2012, Dayton, Ohio, September 2012. (local organization chair)
AGI-09, Second Conference on Artificial General Intelligence, Arlington, Virginia, March 2009. (member of organising committee)
First International Conference on the Mathematical Foundations of Computer Science and Information Technology, MFCSIT2000, Cork, July 2000. (local organization assistant)

Conference Senior PC Member

ISWC2013, 11th International Semantic Web Conference, Sydney, Australia, October 2013. (Senior PC member)
AAAI-13, 27th AI Conference, Bellewue, WA, USA, July 2013. (Senior PC member)
ISWC2012, 11th International Semantic Web Conference, Boston, USA, November 2012. (Senior PC member)
IJCAI-11, 22nd International Joint Conference on Artificial Intelligence, Barcelona, Catalonia, July 2011. (Senior PC member)

Workshop Chair/Special Session Organiser

Neural-Symbolic Learning and Reasoning, Dagstuhl Seminar 14381, Dagstuhl, Germany, September 14-19, 2014. (organizer)
S4BD2013, Semantics For Big Data, AAAI Fall Symposium, Arlington, VA, November 2013. (chair)
NeSy'13, Ninth International Workshop on Neural-Symbolic Learning and Reasoning, at the 23rd International Joint Conference on Artificial Intelligence, Beijing, China, August 2012. (co-organizer)
SW2022, Workshop on What will the Semantic Web look like 10 years from now?, at ISWC2012, Boston, USA, November 2012.
NeSy'12, Eighth International Workshop on Neural-Symbolic Learning and Reasoning, at the Twenty-Sixth AAAI Conference, Toronto, Ontario, Canada, July 2012. (co-organizer)
Dagstuhl Seminar on Cognitive Approaches for the Semantic Web. Dagstuhl, Germany, May/June 2012. (co-organizer)
NeSy'11, Seventh International Workshop on Neural-Symbolic Learning and Reasoning, at the 22nd International Joint Conference on Artificial Intelligence, Barcelona, Catalonia (Spain), July 2011. (co-organizer)
ESWC2011 AI Mashup Challenge, at the 8th Extended Semantic Web Conference, Heraklion, Greece, May/June 2011. (co-organizer)
NeSy'10, Sixth International Workshop on Neural-Symbolic Learning and Reasoning, at AAAI-10, Atlanta, Georgia, USA, July 2010. (co-organizer)
Dagstuhl Seminar on Learning paradigms in dynamic environments, 2010. (co-organiser)
ESWC2010 AI Mashup Challenge, at the 7th Extended Semantic Web Conference, Heraklion, Greece, May/June 2010. (co-organizer)
NatuReS 2009, 2nd International Workshop on Nature Inspired Reasoning for the Semantic Web, at ISWC2009, October 2009. (organiser) (cancelled)
AST2009, 4th International Workshop on Applications of Semantic Technologies at Informatik2009, Lübeck, Germany, September 2009. (co-organiser)
AI Mashup Challenge 2009, at the 32nd Annual Conference on Artificial Intelligence, Paderborn, Germany, September 2009. (co-organiser)
NeSy'09, Fifth International Workshop on Neural-symbolic Learning and Reasoning at IJCAI-09. (organiser)
NatuReS 2008, Nature inspired Reasoning for the Semantic Web at ISWC08, Karlsruhe, Germany, October 2008. (organiser)
AST2008, 3rd International Workshop on Applications of Semantic Technologies at Informatik2008, Munich, Germany, September 2008. (organiser)
NeSy'08, Fourth International Workshop on Neural-symbolic Learning and Reasoning at ECAI2008. (organiser)
ARea2008, Advancing Reasoning on the Web: Scalability and Commonsense. Workshop at ESCWC2008, Teneriffe, Spain, June 2008. (Co-organiser)
Dagstuhl Seminar on Perspectives of Recurrent Neural Networks - Models, Capacities, and Applications, January 2008. (organiser)
FAInt-07, Foundations of Artificial Intelligence, Workshop at KI2007. (organiser)
AST2007, 2nd International Workshop on Applications of Semantic Technologies at Informatik2007, Bremen, Germany, September 2007. (organiser)
NeSy'07, Third International Workshop on Neural-symbolic Learning and Reasoning at IJCAI-07. (organiser)
OWLED2006, Second Workshop OWL - Experiences and Directions. (organizing committee member)
AST2006, 1st International Workshop on Applications of Semantic Technologies at Informatik2006. (organiser)
ICANN06, (special session organiser, Semantic Web Technologies and Neural Networks)
NeSy'06, Second International Workshop on Neural-symbolic Learning and Reasoning at ECAI2006. (organiser)
RoW06, Workshop Reasoning on the Web at WWW2006 (organiser)
FOnt 2005, Workshop on Foundational Aspects of Ontologies at KI 2005. (organiser)
NeSy'05, First International Workshop on Neural-Symbolic Learning and Reasoning at IJCAI-05. (organiser)
Information 2004 Workshop on the Theory of Computation (organiser)
Begabtenförderung-Workshop Tübingen. One-week enhancement programme for 12th/13th grade, Tübingen, March 1998. (organiser)

Panel Chairing

Applications of Semantic Technologies. Panel at the 2nd International Workshop on Applications of Semantic Technologies, AST2007, at Informatik 2007, Bremen, September 2007. Panelists: Ralf Möller, Massimo Paolucci, Rainer Malaka.
Rules and Ontologies. Panel at the 1st International Conference on Web Reasoning and Rule Systems, RR2007, Innsbruck, Austria, June 2007. Panelists: Nicola Leone, Carsten Lutz, Christian de Sainte Marie, Massimo Paolucci.
Applications of Semantic Technologies. Panel at the 1st International Workshop on Applications of Semantic Technologies, AST2006, at Informatik 2006, Dresden, October 2006. Panelists: Franz Baader, Hans-Peter Schnurr, Walter Waterfeld.
The Future of Reasoning on the Web. Panel at the Workshop on Reasoning on the Web, RoW06, at WWW2006, Edinburgh, May 2006. Panelists: Ed Barkmeyer, Ian Horrocks, Peter Patel-Schneider.

Conference Programme Committee

FOIS 2014, 8th edition of the International Conference on Formal Ontology in Information Systems, Rio de Janeiro, Brazil, September 2014. (PC member)
ISWC 2013, 12th International Semantic Web Conference, Sydney, Australia, October 2013. (Posters and Demos track PC)
ICACSIS 2013, 2013 International Conference on Advanced Computer Science and Information Systems, Bali, September 2013. (PC member
IJCAI-13, 23rd International Joint Conference on Artificial Intelligence, Beijing, China, August 2013. (PC member)
IJCNN 2013, 2013 International Joint Conference on Neural Networks, Dallas, TX, August 2013. (PC member)
AGI-13, The Sixth Conference on Artificial General Intelligence, Beijing, July/August 2013. (PC member)
ICBO'13, 4th International Conference on Biomedical Ontology, Montreal, Qc, Canada, July 2013. (PC member)
ESWC2013, 10th Extended Semantic Web Conference, Montpellier, France, May/June 2013. (Workshops and Tutorials PC)
PODS 2013, 32th ACM SIGMOD-SIGACT-SIGART Symposium on Principles of Database Systems, New York, U.S.A., June 2013. (External Review Committee member for Semantic, Linked, Networked, and Crowdsourced Data)
WWW2013, 22nd International World Wide Web Conference, Rio de Janeiro, Brazil, May 2013. (PC member)
Hypertext 2013, 24th ACM Conference on Hypertext and Social Media, Paris, France, May 2013. (PC member)
JIST2012, The 2nd Joint International Semantic Technology Conference, Nara, Japan, December 2012. (PC member)
ISWC2012, Semantic Web In Use track, the 11th International Semantic Web Conference, Boston, USA, November 2012. (PC member)
ISWC2012, Posters and Demos track, the 11th International Semantic Web Conference, Boston, USA, November 2012. (PC member)
ODBASE 2012, The 11th International Conference on Ontologies, DataBases, and Applications of Semantics, Rome, Italy, September 2012. (PC member)
ECAI 2012, 20th European Conference on Artificial Intelligence, Montpellier, France, August 2012. (PC member)
RuleML-2012, 6th International Symposium on Rules, Montpellier, France, August 2012. (PC member)
AAAI-12, Twenty-Sixth AAAI Conference, Toronto, Ontario, Canada, July 2012. (PC member)
ICBO2012, 3rd International Conference on Biomedical Ontology, Graz, Austria, July 2011. (PC member)
Hypertext 2012, 23rd ACM Conference on Hypertext and Social Media, Milwaukee, WI, USA, June 2012. (PC member, Semantic Data track)
ESWC2012, 9th Extended Semantic Web Conference, Heraklion, Greece, May 2012. (PC member Research Track and PC member In-Use and Industrial Track)
WWW2012, 21st International World Wide Web Conference, Lyon, France, April 2012. (PC member of the Semantic Web track)
FoIKS 2012, Seventh International Symposium on Foundations of Information and Knowledge Systems, Kiel, Germany, March 2012. (PC member)
JIST2011, Joint International Semantic Technology Conference, Hangzhou, China, December 2011. (PC member)
ICACSIS 2011, International Conference on Advanced Computer Science and Information System 2011, Jakarta, Indonesia, December 2011. (PC member)
RuleML2011@BRF, 5th International RuleML Symposium on Rules, Fort Lauderdale, Floria, USA, November 2011. (PC member)
ISWC2011, Research (main) track of the 10th International Semantic Web Conference, Bonn, Germany, October 2011. (PC member)
ISWC2011, Semantic Web In Use track of the 10th International Semantic Web Conference, Bonn, Germany, October 2011. (PC member)
ISWC2011, Posters and Demos track of the 10th International Semantic Web Conference, Bonn, Germany, October 2011. (PC member)
RR2011, Fifth International Conference on Web Reasoning and Rule Systems, Galway, Ireland, August 2011. (PC member)
AAAI-11, Tutorial Forum of the 25th AAAI Conference on Artificial Intelligence, San Francisco, CA, August 2011. (PC member)
AGI-11, Fourth Conference on Artificial General Intelligence, Mountain View, CA, USA, August 2011. (PC member)
IJCNN2011, 2011 International Joint Conference on Neural Networks, San Jose, California, July/August 2011. (PC member)
ICBO2011, International Conference on Biomedical Ontology, Buffalo, NY, July 2011. (PC member)
WWW2011, 20th International World Wide Web Conference, Hyderabad, India, March/April 2011. (PC member of the Semantic Web track)
DBKDA 2011, The Third International Conference on Advances in Databases, Knowledge, and Data Applications, St. Maarten, The Netherlands Antilles, January 2011. (PC member)
AIMSA2010, 14th International Conference on Artificial Intelligence: Methodology, Systems, Applications, Varma, Bulgaria, September 2010. (PC member)
ECAI2010, 19th European Conference on Artificial Intelligence, Lisboa, Portugal, August 2010. (PC member)
AAAI-10, Twenty-Fourth AAAI Conference on Artificial Intelligence, Atlanta, Georgia, USA, July 11-15, 2010. (PC member)
ILP 2010, 20th International Conference on Inductive Logic Programming, Firenze, Italy, June 2010. (PC member)
ESWC2010, 7th Extended Semantic Web Conference, Heraklion, Greece, May/June 2010. (PC member)
ICCS 2010, 18th International Conference on Conceptual Structures, 2010. (PC member)
DBKDA 2010, The Second International Conference on Advances in Databases, Knowledge, and Data Applications, Menuires, The Three Valleys, France, April 2010. (PC member)
WEBIST 2010, 6th International Conference on Web Information Systems and Technologies, Valencia, Spain, April 2010. (PC member)
GeoS 2009, International Conference on Geospacial Semantics, Mexico City, Mexico, December 2009. (PC member)
ISWC 2009, 8th International Semantic Web Conference, Washington, DC, October 2009. (PC member)
SEMAPRO 2009, The Third International Conference on Advances in Semantic Processing, Sliema, Malta, October 2009. (PC member)
ISDT2009, 5th International Symposium on Domain Theory, Shanghai, China, September 2009. (PC member)
SUM2009, Third International Conference on Scalable Uncertainty Management, Washington D.C., September 2009. (PC member)
IJCAI-09, 21st International Joint Conference on Artificial Intelligence, Pasadena, California, July 2009. (PC member)
IJCNN 2009, 2009 International Joint Conference on Neural Networks, Atlanta, GA, June 2009. (official reviewer)
DBKDA 2009, The First International Conference on Advances in Databases, Knowledge, and Data Applications, Cancun, Mexico, March 2009. (PC member)
WEBIST 2009, 5th International Conference on Web Information Systems and Technologies, Lisboa, Portugal, March 2009. (PC member)
CiE 2009, Computability in Europe, Heidelberg, Germany, June 2009. (PC member)
ASWC2008, 3rd Asian Semantic Web Conference, Pathumthani, Thailand, December 2008. (PC member)
ISWC2008, 7th International Semantic Web Conference, Karlsruhe, Germany, October 2008. (PC member)
SBIA 2008, 19th Brazilian Symposium on Artificial Intelligence, Salvador, Bahia, Brazil, October 2008. (PC member)
JELIA 2008, 11th European Conference on Logics in Artificial Intelligence, Dresden, Germany, October 2008. (PC member)
SUM 2008, Second International Conference on Scalable Uncertainty Management, Napoli, Italy, October 2008. (PC member)
KR-08, 11th International Conference on Principles of Knowledge Representation and Reasoning, Sydney, Australia, September 2008. (PC member)
ECAI2008, 18th European Conference on Artificial Intelligence, Patras, Greece, July 2008. (PC member)
ESWC2008, 5th International Semantic Web Conference, Teneriffe, Spain, June 2008. (PC member)
FICS'08, Foundations of Informatics, Computing, and Software, Shanghai, China, June 2008. (PC member)
WEBIST 2008, 4th International Conference on Web Information Systems and Technologies, Funchal, Madeira, Portugal, May 2008. (PC member)
WWW2008, 17th International World Wide Web Conference, Beijing, China, April 2008. (PC member of Semantic Web Track)
ICTAI 2007, IEEE International Conference on Tools with Artificial Intelligence. (PC member)
CONTEXT 07, Sixth International and Interdisciplinary Conference on Modeling and Using Context. (PC member)
IJCNN 2007, 2007 International Joint Conference on Neural Networks. (PC member)
ESWC2007, 4th International Semantic Web Conference. (PC member)
WWW2007, 16th International World Wide Web Conference. (PC member of Semantic Web track)
WEBIST 2007, 3rd International Conference on Web Information Systems and Technologies, Barcelona, Spain, March 2007. (PC member)
IJCAI-07, 20th International Joint Conference on Artificial Intelligence. (official reviewer)
RuleML2006, Second International Conference on Rules and Rule Markup Languages for the Semantic Web. (PC member)
ICANN06, International Conference on Artificial Neural Networks (PC member)
MFCSIT06, Fourth Irish Conference on the Mathematical Foundations of Computer Science and Information Technology. (PC member)
ESWC06 research track, 3rd European Semantic Web Conference. (PC member)
ESWC06 Poster/Demo session, 3rd European Semantic Web Conference Poster/Demo session. (PC member)
AIMSA2006, 12th International Conference on Artificial Intelligence: Methodology, Systems, Applications. (PC member)
ICCS 2005, 13th International Conference on Conceptual Structures (PC member)

Lectures at Summer Schools

ICCL Summer School 2013 on Semantic Web - Ontology Languages and Their Use, Dresden, Germany, August 2013. (lecturer, Ontologies and Rules)
ESSLLI 2008 (lecturer, Integrating Logic Programs and Connectionist Systems)
ESSLLI 2006 (lecturer, Approximate Reasoning for the Semantic Web )
ICCL Summer School 2006 on Knowledge Structures. (lecturer, Knowledge, Reasoning, and the Semantic Web)
IK2006, Interdisciplinary College. (lecturer, Neural-symbolic learning and reasoning)
ESSLLI 2005 (lecturer, Integrating Logic Programs and Connectionist Systems)

Tutorials at Conferences

ISWC2010, 9th International Semantic Web Conference, Shanghai, November 2010. (Tutorial on OWL 2 - Theory and Practice)
Informatik 2009, 39th Annual Conference of the Gesellschaft für Informatik, Lübeck, Germany, September/October 2009. (Tutorial, Semantic Web Ontology Languages)
KI 2009, 32nd Annual Conference on Artificial Intelligence, Paderborn, Germany, September 2009. (Tutorial, Knowledge Representation and Reasoning for the Semantic Web - OWL 2 and Rules)
IJCAI-09, (tutorial, Semantic Web Ontology Languages)
ESWC2009, 6th European Semantic Web Conference, May/June 2009, Heraklion, Crete, Greece. (tutorial on OWL 2 Rules)
ISWC2006, (tutorial, Context Sensitivity in Knowledge Rich Systems)
ICANN06, (tutorial, Knowledge Technologies, Hybrid Approaches and Neural Networks)
ESWC06 (tutorial, Practical Reasoning with OWL and DL-Safe Rules)
KI 2005 (tutorial, Connectionist Knowledge Representation and Reasoning)

Journal Special Issues (EB member)

IJSWIS special issue on Semantic Media Adaptation & Personalization
International Journal of Semantic Computing, special issue on Web Scale Reasoning: scalable, tolerant and dynamic.
GLDV-Journal for Computational Linguistics and Language Technology, special issue on ontologies in text technology.
Fundamenta Informaticae special issue on RuleML-2006.
IJSWIS special issue on ontology matching.

Workshop Programme Committee

SSWS2013, 9th International Workshop on Scalable Semantic Web Knowledge Base Systems - at ISWC 2013 in Sydney, Australia, October 2013. (PC member)
FCA4AI-2013, Workshop on What can FCA do for Artificial Intelligence? at IJCAI-13, Beijing, China, August 2013. (PC Member)
DL2013, 26th International Workshop on Description Logics, Ulm, Germany, July 2013. (PC Member)
OWLED2013, Tenth International Workshop OWL: Experiences and Directions, Montpellier, France, May 2013, at ESWC2013. (PC member)
LHD2012, Discovering Meaning "On the Go" in Large and Heterogeneous Data, at ISWC2012, Boston, USA, November 2012. (PC Member)
SemQuant2012, Workshop on Quantitative Formalization in the Semantic Web, at ISWC2012, Boston, USA, November 2012. (PC member)
EvoDyn 2012, Joint Workshop on Knowledge Evolution and Ontology Dynamics at, ISWC 2012, Boston, USA, November 2012. (PC member)
GIBDA2012, Workshop on GIScience in the Big Data Age 2012, at the seventh International Conference on Geographic Information Science 2012, GIScience 2012, Columbus, Ohio, USA, September 2012. (PC member)
SDA2012, 2nd International Workshop on Semantic Digital Archives, Paphos, Cyprus, September 2012. (PC member)
OAIS'2012, International Workshop on Ontologies meet Advanced Information Systems, at ADBIS'2012, Poznan, Poland, September 2012. (PC member)
AI@IE 2012, Workshop on AI Problems and Approaches for Intelligent Environments, at ECAI 2012, Montpellier, France, August 2012. (PC member)
FCA4AI, What can FCA do for Artificial Intelligence? Workshop at at ECAI 2012, Montpellier, France, August 2012. (PC member)
OWLED2012, Ninth International Workshop OWL: Experiences and Directions, Heraklion, Crete, Greece, May 2012, at the 9th Extended Semantic Web Conference, ESWC2012. (PC member)
STIIC 2012, 3rd International Workshop on Semantic Technologies for Information-Integrated Collaboration, at the 2012 International Conference on Collaboration Technologies and Systems, CTS 2012, Denver, Colorado, U.S.A., May 2012. (PC member)
OrdRing, Ordering and Reasoning, workshop at the 10th International Semantic Web Conference, ISWC2011, Bonn, Germany, October 2011. (PC member)
OCAS2011, Ontologies come of Age in the Semantic Web, at the 10th International Semantic Web Conference, ISWC2011, Bonn, Germany, October 2011. (Challenge judge)
SSWS2011, 7th International Workshop on Scalable Semantic Web Knowledge Base Systems - co-located with the 10th International Semantic Web Conference, ISWC2011, Bonn, Germany, October 2011. (PC member)
AST2011, 6th Workshop Applications of Semantic Technologies, at Informatik 2011, Gerlin, Germany, October 2011. (PC member)
DKB2011, 3rd Workshop on dynamics of Knowledge and Belief, at the 34th Annual Conference on Artificial Intelligence, KI-2011, Berlin, Germany, October 2011. (PC member)
SDA2011, International Workshop on Semantic Digital Archives, at the 15th International Conference on Theory and Practice of Digital Libraries, TPDL2011, Berlin, Germany, September 2011.
LHD-11, Discovering Meaning On the Go in Large and Heterogenous Data, Workshop at IJCAI-11, Barcelona, Catalonia, July 2011. (PC member)
DL2011, 24th International Workshop on Description Logics, Barcelona, Catalonia, July 2011. (PC member)
DKRC2011, Deep Knowledge Representation Challenge Workshop, at the Sixth International Conference on Knowledge Capture, K-CAP2011, Banff, Alberta, Canada, June 2011. (PC member)
OWLED 2011, OWL: Experiences and Directions, Eigth International Workshop, San Francisco, CA, USA, June 2011.
SSWS2010, 6th International Workshop on Scalable Semantic Web Knowledge Base Systems - co-located with the 9th International Semantic Web Conference, ISWC2010, Shanghai, November 2010.
BuRO 2010, 1st International Workshop on Business Models, Business Rules and Ontologies - co-located with the 4th International Conference on Web Reasoning and Rule Systems, RR2010, Bressanone/Brixen, Italy, September 22-24, 2010.
LSTD2010, Workshop on Linked Spatiotemporal Data - co-located with the 6th International Conference on Geographic Information Science, GIScience2010, Zürich, Switzerland, September 2010.
OWLED2010, Seventh International Workshop OWL: Experiences and Directions, San Francisco, CA, June 2010.
NeFoRs'10, New forms of Reasoning for the Semantic Web: Scalable and Dynamic - 7th Extended Semantic Web Conference, ESWC2010, Heraklion, Greece, May/June 2010.
DL2010, 23rd International Workshop on Description Logics, Waterloo, Canada, May 2010. (PC member)
WoMO2010, Workshop on Modular Ontologies - 6th International Conference on Formal Ontology in Information Systems, FOIS 2010, Toronto, Canada, May 2010. (PC member)
SeMuDaTe2009, Workshop on Semantic Multimedia Database Technologies - 10th International Workshop of the Multimedia Metadata Community, Graz, Austria, December 2009. (PC member)
SWSC09, 8th Semantic Web Services Challenge Workshop, at the Seventh IEEE European Conference on Web Services, Eindhoven, The Netherlands, November 2009. (PC member)
COLA09, Computational Logic with Applications, thematic track at EPIA 2009, the Fourteenth Portuguese Conference on Artificial Intelligence, Aveiro, Portugal, October 2009. (PC member)
KDBI09, Knowledge Discovery and Business Intelligence, thematic track at EPIA 2009, the Fourteenth Portuguese Conference on Artificial Intelligence, Aveiro, Portugal, October 2009. (PC member)
ASA 2009, Assistenzsysteme im Alltag: Von der Forschung in die Praxis, at Informatik 2009, Lübeck, Germany, September/October 2009. (PC member)
RAKRL09, Relational Approaches to Knowledge Representation and Learning, at the 32nd Annual conference on Artificial Intelligence, Paderborn, Germany, September 2009. (PC member)
DL2009, 22nd International Workshop on Description Logics, Oxford, UK, July 2009. (PC member)
SWS-Challenge 2009, 8th Semantic Web Services Challenge Workshop, at the 5th European Conference on Model-Driven Architecture Foundations and Applications, ECMDA2009, Enschede, The Netherlands. (PC member)
IRMLeS, Inductive reasoning and machine learning on the semantic web, at ESWC09, Heraklion, Greece, May 2009. (PC member)
"Semantics for the Rest of Us" - Variants of RDF and OWL in the Real Worlds, at WWW09, Madrid, Spain, April 2009.
SSWS2008, Fourth International Workshop on Scalable Semantic Web Knowledge Base Systems, Karlsruhe, Germany, October 2008. (PC member)
iCEP-FIS08, 1st International Workshop on Complex Event Processing for the Future Internet, at the Future Internet Symposium, Vienna, Austria, September 2008. (PC member)
NEFORS 2008, Workshop on New forms of reasoning for the Semantic Web: scalable, tolerant and dynamic, at the 3rd Asian Semantic Web Conference, ASWC2008, Pathumthani, Thailand, December 2008. (PC member)
C&O-2008, 4th International Workshop on Contexts and Ontologies, at ECAI2008, Patras, Greece, July 2008. (PC member)
WORM-08, International Workshop on Ontologies: Reasoning and Modularity, at ESWC2008, Teneriffe, Spain, June 2008. (PC member)
DL2008, 2008 International Workshop on Description Logics, Dresden, Germany, May 2008.
AAAI 2008 Spring Symposium on AI Meets Business Rules and Process Management, Stanford, CA, USA, March 2008. (PC member)
SWAP2007, Semantic Web Applications and Perspectives, 4th Italian Semantic Web Workshop, Bari, Italy, December 2007. (PC member)
SSWS2007, Third International Workshop on Scalable Semantic Web Knowledge Base Systems, Vilamoura, Algarve, Portugal, November 2007. (PC member)
Workshop on Modular Ontologies, 4th International Conference on Knowledge Capture, Whistler, BC, October 2007. (PC member)
ALPSWS2007, 2nd International Workshop on Applications of Logic Programming to the Web, Semantic Web and Semantic Web Services at ICLP2007, Porto, Portugal, September 2007. (PC member)
SemInfra2007, First Workshop on Web Scale Infrastructures for Semantic Mashup, Search and Retrieval. (PC member)
FBTC2007, From Biology To Concurrency and Back, Workshop at CONCUR2007, Lisboa, Portugal, September 2007. (PC member)
SWAP 2006, Semantic Web Applications and Perspectives, 3rd Italian Semantic Web Workshop, Pisa, Italy, December 2006. (PC member)
SMAP 2006, 1st International Workshop on Semantic Media Adaptation and Personalization, December 5th, 2006, Athens, Greece. (PC member)
WoMO2006, First International Workshop on Modular Ontologies at ISWC2006, Athens, Georgia. (PC member)
SSWS2006, Second International Workshop on Scalable Semantic Web Knowledge Base Systems at ISWC2006, Athens, Georgia. (PC member)
Workshop on Imperfect Knowledge Modeling, Podebrady, Czech Republic, October 2006. (PC member)
ALPSWS2006, International Workshop on Applications of Logic Programming in the Semantic Web and Semantic Web Services. (PC member)
Semantic Web Personalization Workshop, 3rd European Semantic Web Conference. (PC member)
WSPI 2006, Third International Workshop on Philosophy and Informatics. (PC member)

PhD Symposium and Student Conference Programme Committees

Doctoral Consortium at the 7th International Conference on Web Reasoning and Rule Systems, RR2013, Mannheim, Germany, July 2013. (PC member)
PhD Symposium at the 10th ESWC 2013, Montpellier, France, May 2013. (PC member)
Doctoral Consortium at the 6th International Conference on Web Reasoning and Rule Systems, RR2012, Vienna, Austria, September 2012. (PC member)
PhD Symposium at the 9th Extended Semantic Web Conference, ESWC2012, Heraklion, Greece, May 2012. (PC member)
PhD Symposium at the 8th Extended Semantic Web Conference, ESWC2011, Heraklion, Greece, May 2011. (PC member)
PhD Symposium at the 6th European Semantic Web Conference, ESWC2009, Heraklion, Greece, May 2009. (PC member and mentor)
ISCAM 2008, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2008.
ISCAM 2007, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2007.
EACL2006 Student Research Workshop at the 11th Annual Meeting of the EACL, EACL 2006.
ISCAM 2006, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2006.
ISCAM 2005, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2005.
ISCAM 2004, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2004.
ISCAM 2003, Conference in Applied Mathematics for undergraduate and graduate students, Bratislava, Slovak Republic, April 2003.

Standardisation Activities

Member of the OWL (Web Ontology Language) Working Group.
Member of the W3C Rule Interchange Format Working Group.

Dissertation Committees (where I'm not primary advisor)

Robert Höhndorf, Basic considerations for improving interoperability between ontology-based biological information systems, Dept. of Mathematics and Computer Science, University of Leipzig, Germany, 2009.
Sergey Lukichev, Towards Rule Interchange and Rule Verification, Institute of Informatics, Brandenburg University of Technology at Cottbus, Germany, 2009.
Karl Gerhards, Unscharfe Suche für Terme geringer Frequenz in einem großen Korpus, University of Osnabrüuck, Germany, Dissertation, 2010.
Matthias Knorr, CENTRIA, Universidade Nove de Lisboa, Potugal, forthcoming.
Qian Han, Wright State University, Dayton, OH, USA, forthcoming.

Reviewing

Faculty Committees at Wright State University

2013/14: University Building and Grounds Committee
2013/14: University re-accreditation subcommitte Teaching and Learning: Quality, Resources, and Support
2013/14: Department Steering Committee (elected)
2013/14: Department Faculty Development Committee
2013/14: Department Graduate Studies Committee
2012/13: University Building and Grounds Committee
2012/13: Department Steering Committee (elected)
2012/13: Department Faculty Development Committee
2012/13: Department Faculty Search Committee (chair)
2012/13: Department Graduate Studies Committee
2011/12: Department Faculty Search Committee
2011/12: Department Graduate Studies Committee
2010/11: Department Graduate Studies Committee
2010/11: Department ad-hoc committee for developing a new introductory sequence to discrete structures (chair).
2009/10: Department Graduate Studies Committee

Miscellaneous

Founding member of the Web Reasoning and Rule Systems Conference Association e.V. (as vice-president).
Founding member of the Förderverein Semantische Technologien e.V.
Teacher at the Semantic Web Akademie.
Guest Scientist of the FZI Forschungszentrum Informatik.
Collaborator of the Boole Centre for Research in Informatics, National University of Ireland, University College Cork, Ireland.
ESWC2008 Demonstrations Track, 5th International Semantic Web Conference Demonstrations Track, Teneriffe, Spain, June 2008. (PC member)
BCU Mathematics Contest. International Enhancement Programme Maths Competition, March 2001, 2000, 1999. (organisation and execution in Cork, Irland (with Prof. Dr. F. Holland), and making of problem set (with Prof. Dr. F. Holland and Prof. Dr. G. Kalmbach))
Intensivkurs Mathematik. Two-week enhancement programme for 12th/13th grade, Ulm 2001, Donaueschingen 2000, 1999, 1998, 1997, 1996. (assistant for organization and execution)