AAAI Fellow (2013)
for significant contributions to the theory of nonmonotonic reasoning and to the invention of answer set programming

NMR-04 - Invited talk (pdf file)
LASH-06 - Invited talk (pdf file)
CSL-06 - Invited talk (pdf file)
ASP-07 - Invited talk (pdf file)
ICLP-07 - Invited tutorial (pdf file)
ESSLLI-08 - Recent Advances in Nonmonotonic Reasoning (pdf file)
3rd International Compulog/ALP Summer School on Logic Programming and Computational Logic - tutorial on foundations of logic programming (pdf file)
ICLP 2009 Dinner Speech (pdf file)
Third Polish Combinatorial Conference, Bedlewo, Poland, 2010 - invited talk on combinatorics and preferences

University of Kentucky Computer Science Department
Association for the Advancement of Artificial Intelligence
Association for Logic Programming, ALP
Principles of Knowledge Representation and Reasoning, Incorporated (KR, Inc.)
International Workshops on Nonmonotonic Reasoning (NMR)

With Raphael Finkel and Victor Marek we use SAT techniques to generate sudoku puzzles. Try your skills at Puzzle of the Day