James Delgrande - Publications

Please email me for copies of any papers not listed below (or visit the Computer Science Bibliography Server).

2023

• Gerhard Brewka, James Delgrande, Javier Romero, and Torsten Schaub, "A General Framework for Preferences in Answer Set Programming", Artificial Intelligence Journal, 325, Dec. 2023, 49 pages.

2022

• Jens Classen and James P. Delgrande, "Projection of Belief in the Presence of Nondeterministic Actions and Fallible Sensing", 19th International Conference on Principles of Knowledge Representation and Reasoning, Haifa, Israel, July 31 -- Aug 5, 2022.

• James P. Delgrande, Joshua Sack, Gerhard Lakemeyer, and Maurice Pagnucco, "Epistemic Logic of Likelihood and Belief", 31st International Joint Conference on Artificial Intelligence (IJCAI-ECAI 2022), Vienna, Austria, July 23-29, 2022.

• Matthew James Lynn, James P. Delgrande, and Pavlos Peppas, "Using Conditional Independence for Belief Revision", 36th AAAI Conference on Artificial Intelligence, Vancouver, Canada (online), Feb 22 -- March 1, 2022.

2021

• Jens Classen and James P. Delgrande, "An Account of Intensional and Extensional Actions, and its Application to Belief, Nondeterministic Actions, and Fallible Sensors", Eighteenth International Conference on Principles of Knowledge Representation and Reasoning (KR-2021), Hanoi, Vietnam (online), Nov 2021. pdf

• Jens Classen and James P. Delgrande, "Towards a Temporal Account of Contrary-to-Duty Constraints over Complex Actions in the Situation Calculus", Nineteenth International Workshop on Non-Monotonic Reasoning (NMR'21), Hanoi, Vietnam (online), Nov 2021. pdf

• Matthew James Lynn, James P. Delgrande, and Pavlos Peppas, "Using Conditional Independence for Belief Revision", Nineteenth International Workshop on Non-Monotonic Reasoning (NMR'21), Hanoi, Vietnam (online), Nov 2021. pdf

• Matthew James Lynn and James P. Delgrande, "Belief Base Contraction by Cutting Connections", Nineteenth International Workshop on Non-Monotonic Reasoning (NMR'21), Hanoi, Vietnam (online), Nov 2021. pdf

2020

• James P. Delgrande, "A Preference-Based Approach to Defeasible Deontic Inference", Seventeenth International Conference on Principles of Knowledge Representation and Reasoning, Rhodes, Greece, Sept 2020. pdf

• Jens Classen and James P. Delgrande, "Dyadic Obligations over Complex Actions as Deontic Constraints in the Situation Calculus", Seventeenth International Conference on Principles of Knowledge Representation and Reasoning, Rhodes, Greece, Sept 2020. pdf

• James Delgrande and Christos Rantsoudis, "A Preference-Based Approach for Representing Defaults in First-Order Logic", 18th International Workshop on Non-Monotonic Reasoning (NMR'18), Rhodes, Greece, Sept 2020. pdf

2019

• James P. Delgrande, Bryan Renne, and Joshua Sack, "The Logic of Qualitative Probability", Artificial Intelligence Journal, 275, 2019, pp. 457-486. pdf

• Zhiqiang Zhuang, Zhe Wang, Kewen Wang, and James P. Delgrande, "A Generalisation of AGM Contraction and Revision to Fragments of First-Order Logic", Journal of Artificial Intelligence Research, 64, 2019, pp. 147-179. pdf

• James P. Delgrande and Hector J. Levesque, "An Epistemic Approach to Nondeterminism: Believing in the Simplest Course of Events", Studia Logica, 5, 107, 2019, pp. 859-886. link

2018

• James P. Delgrande and Pavlos Peppas, "Incorporating Relevance in Epistemic States in Belief Revision", Sixteenth International Conference on Principles of Knowledge Representation and Reasoning, Tempe, US, Oct 30 - Nov 2, 2018, pp. 230-239. pdf

• James P. Delgrande, Pavlos Peppas, and Stefan Woltran, "General Belief Revision", Journal of the Association of Computing Machinery, 65, 5, 2018, pp. 1-34. pdf

2017

• James P. Delgrande, "A Knowledge Level Account of Forgetting", Journal of Artificial Intelligence Research, 60, 2017, pp. 1165-1213. pdf

• Mehrdad Oveisi, James Delgrande, Francis Jeffry Pelletier, and Fred Popowich, "Kernel Contraction and Base Dependence", Journal of Artificial Intelligence Research, 60, 2017, pp. 97-148. pdf

• Amr Dawood, James Delgrande, and Zhiwei Liao, "A Study of Kernel Contraction in EL", Thirteenth International Symposium on Logical Formalizations of Commonsense Reasoning (Commonsense-2017), London, UK, November 6-8, 2017. pdf

• Zhiqiang Zhuang, James Delgrande, Abhaya Nayak, Abdul Sattar, "A Unifying Framework for Probabilistic Belief Revision", 26th International Joint Conference on Artificial Intelligence (IJCAI-17), Melbourne, Australia, 19-25 August, 2017, pp. 1370-1376. pdf

• Vahid Vaezian and James Delgrande, "On the Role of Possibility in Action Execution and Knowledge in the Situation Calculus", 30th Canadian Conference on Artificial Intelligence, Edmonton, AB, Canada, May 16-19, 2017, pp. 155-161. pdf

2016

• Paul Vicol, James Delgrande, Torsten Schaub "A Minimization-Based Approach to Iterated Multi-Agent Belief Change", 22nd European Conference on Artificial Intelligence (ECAI 2016), The Hague, Holland, 29 August -- 2 September 2016, pp. 1221-1229. pdf

• Zhiqiang Zhuang, James Delgrande, Abhaya Nayak, Abdul Sattar "Reconsidering AGM-Style Belief Revision in the Context of Logic Programs", 22nd European Conference on Artificial Intelligence (ECAI 2016), The Hague, Holland, 29 August -- 2 September 2016, pp. 671-679. pdf

• Zhiqiang Zhuang, James Delgrande, Abhaya Nayak and Abdul Sattar. "A New Approach for Revising Extended Logic Programs", 16th International Workshop on Non-Monotonic Reasoning (NMR'16), Cape Town, South Africa, April 22-24, 2016, pp. 171-176. pdf

2015

• Aaron Hunter and James Delgrande, "Belief Change with Uncertain Action Histories", Journal of Artificial Intelligence Research, 53, 2015, pp. 779-824. pdf

• James Delgrande and Pavlos Peppas, "Belief Revision in Horn Theories", Artificial Intelligence Journal, 218, January 2015, pp. 1-22. pdf

• James Delgrande and Kewen Wang, "A Syntax-Independent Approach to Forgetting in Disjunctive Logic Programs", 29th National Conference on Artificial Intelligence (AAAI-15), Austin. TX, January 25-30, 2015. pdf

• Gerhard Brewka, James Delgrande, Javier Romero, and Torsten Schaub, "asprin: Customizing Answer Set Preferences without a Headache", 29th National Conference on Artificial Intelligence (AAAI-15), Austin. TX, January 25-30, 2015. pdf

• James Delgrande and Jérôme Lang, Guest Editors' Introduction to the Special Issue: Knowledge Representation, Journal of Philosophical Logic, 44, 2, 2015, pp. 111-115. pdf

• James Delgrande and Bryan Renne, "The Logic of Qualitative Probability", 24th International Joint Conference on Artificial Intelligence (IJCAI-15), Buenos Aires, Argentina, July 27-31, 2015. pdf

• Mehrdad Oveisi, James Delgrande, Fred Popowich, and Francis Jeffry Pelletier, "Kernel Contraction and Base Dependence: A Theoretical Benchmark for Relevance", 24th International Joint Conference on Artificial Intelligence (IJCAI-15), Buenos Aires, Argentina, July 27-31, 2015. pdf

• Zhiqiang Zhuang, Zhe Wang, Kewen Wang, and James Delgrande, "Extending AGM Contraction to Arbitrary Logics", 24th International Joint Conference on Artificial Intelligence (IJCAI-15), Buenos Aires, Argentina, July 27-31, 2015. pdf

• Gerd Brewka, James Delgrande, Javier Romero, and Torsten Schaub, "Implementing Preferences with asprin", Thirteenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'15), Lexington, KY, Sept 27-30, 2015. pdf

• Paul Vicol and James Delgrande, "An Implementation of Consistency-Based Multi-Agent Belief Change using ASP", Thirteenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'15), Lexington, KY, Sept 27-30, 2015. pdf

2014

• Mehrdad Oveisi, James P. Delgrande, Jeff Pelletier, and Fred Popowich, "Belief Change and Base Dependence", Fourteenth International Conference on Principles of Knowledge Representation and Reasoning, Vienna, Austria, July 20-24, 2014, pp. 151-159. pdf

• James P. Delgrande, "Toward a Knowledge Level Analysis of Forgetting", Fourteenth International Conference on Principles of Knowledge Representation and Reasoning, Vienna, Austria, July 20-24, 2014, pp 606-609. pdf

• Gerhard Brewka, James Delgrande, Javier Romero, and Torsten Schaub, "Are Preferences Giving You a Headache? -- Take asprin!" Workshop on Answer Set Programming and Other Computing Paradigms (ASPOCP 2014), Vienna, Austria, July 17-19, 2014.

• James P. Delgrande and Kewen Wang, "An Approach to Forgetting in Disjunctive Logic Programs that Preserves Strong Equivalence", Fifteenth International Workshop on Non-Monotonic Reasoning (NMR 2014), Vienna, Austria, July 17-19, 2014.

2013

• James P. Delgrande, Torsten Schaub, Hans Tompits and Stefan Woltran, "A Model-theoretic Approach to Belief Change in Answer Set Programming", ACM Transactions on Computational Logic, 14,2, June 2013. pdf

• James Delgrande and Renata Wassermann, "Horn Clause Contraction Functions", Journal of Artificial Intelligence Research, 48, November 2013, pp. 475-511. pdf

• James P. Delgrande, Pavlos Peppas, and Stefan Woltran, "AGM-Style Belief Revision of Logic Programs under Answer Set Semantics", 12th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'13), Lecture Notes in Artificial Intelligence, Vol. 8148, Springer-Verlag, Pedro Cabalar and Tran Cao Son (editors), Corunna, Spain, Sept 15-19, 2013. pdf

• James P. Delgrande and Hector J. Levesque, "A Formal Account of Nondeterministic and Failed Actions", 23rd International Joint Conference on Artificial Intelligence (IJCAI-13), Beijing, China, August 5-9, 2013. pdf

• Aaron Hunter, James Delgrande, and Ryan McBride, "Protocol Verification in a Theory of Action", 26th Canadian Conference on Artificial Intelligence, Regina, Canada, May 28-31, 2013. pdf

• Zahra Vaseqi and James Delgrande, "An Application of Answer Set Programming for Situational Analysis in a Maritime Traffic Domain", 26th Canadian Conference on Artificial Intelligence, Regina, Canada, May 28-31, 2013.

• James Delgrande, "Managing Change in Answer Set Programs: The Logical Approach", 12th International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'13), Corunna, Spain, Sept 15-19, 2013. (keynote speaker)

• James Delgrande, "Believing in the Simplest Course of Events", CFE/Studia Logica Workshop on the Logic of Simplicity, Centre for Formal Epistemology, Department of Philosophy, Carnegie Mellon University, Pittsburgh, PA, June 7-9 2013 (Invited speaker)

2012

• James P. Delgrande and Hector J. Levesque, "Belief Revision with Sensing and Fallible Actions", Thirteenth International Conference on Principles of Knowledge Representation and Reasoning, Rome, Italy, June 10-14, 2012. pdf

• James P. Delgrande, "Considerations on Belief Revision in an Action Theory", in Festschrist in Honour of Vladimir Lifschitz, Esra Erdem, Joohyung Lee, Yuliya Lierler, and David Pearce (eds.), Lecture Notes in Computer Science, Vol. 7265, Springer-Verlag, 2012, pp. 164-177. pdf

• James P. Delgrande, "Revising Beliefs on the Basis of Evidence", International Journal of Approximate Reasoning, 53, 3, April 2012, pp. 396-412. pdf

• Giacomo Bonanno, James Delgrande, and Hans Rott, Guest Editors' Introduction to the Special Issue: Information Processing, Rational Belief Change, and Social Interaction, Journal of Philosophical Logic, 41,1, 2012, pp. 1-5. pdf

• James Delgrande and Yi Jin, "Parallel Belief Revision: Revising by Sets of Formulas", Artificial Intelligence Journal, 176, 1, January 2012, pp. 2223-2245. pdf

2011

• James P. Delgrande, "Beliefs, Belief Revision, and Noisy Sensors", in Knowing, Reasoning, and Acting: Essays in Honour of Hector J. Levesque, Gerhard Lakemeyer and Sheila A. McIlraith (eds.), College Publications, 2011, pp. 179-198. pdf

• James P. Delgrande, "Revising by an Inconsistent Set of Formulas", 22nd International Joint Conference on Artificial Intelligence (IJCAI-11), Barcelona, Spain, July 19-22, 2011, pp. 833-838 pdf

• James P. Delgrande and Pavlos Peppas, "Belief Revision: Revising Horn Clause Theories", 22nd International Joint Conference on Artificial Intelligence (IJCAI-11), Barcelona, Spain, July 19-22, 2011, pp. 839-844. pdf

• James P. Delgrande and Renata Wassermann, "Topics in Horn Contraction: Supplementary Postulates, Package Contraction, and Forgetting", IJCAI-11 Workshop on Nonmonotonic Reasoning, Action, and Change (NRAC'11), Sebastian Sardinia and Stavros Vassos (eds.), Barcelona, Spain, July 16-17 2011, pp. 87-94.

• Aaron Hunter and James Delgrande, "Iterated Belief Change Due to Actions and Observations", Journal of Artificial Intelligence Research, 40, 2011, pp. 269-304. pdf

• James P. Delgrande, "What's in a Default? Thoughts on the Nature and Role of Defaults in Nonmonotonic Reasoning", in Nonmonotonic Reasoning: Essays Celebrating its 30th Anniversary, Gerhard Brewka, Victor W. Marek, and Miroslaw Truszczynski (eds.), Studies in Logic: Mathematical Logic and Foundations, Series Editors: S. Artemov, S. Buss, D. Gabbay, S. Shelah, J. Siekmann, J. van Benthem, College Publications, 2011, pp. 89-109. pdf

2010

• James Delgrande, "A Program-Level Approach to Revising Logic Programs under the Answer Set Semantics", Special Issue: "26th International Conference on Logic Programming (ICLP'10)", Theory and Practice of Logic Programming, 10, 4--6, 2010, pp. 565-580. (Also 26th International Conference on Logic Programming (ICLP 2010)) pdf

• James P. Delgrande, Aaron Hunter, and Torsten Grote, "On the Representation and Verification of Cryptographic Protocols in a Theory of Action", Eighth International Conference on Privacy, Security, and Trust (PST 2010), Ottawa, Canada, August 17-19, 2010.

• James P. Delgrande and Renata Wassermann, "Horn Clause Contraction Functions: Belief Set and Belief Base Approaches", Twelth International Conference on Principles of Knowledge Representation and Reasoning, Toronto, Canada, May 9-13, 2010. pdf

• James Delgrande, "What's in a Default? -- Thoughts on the Role and Nature of Defaults in Nonmonotonic Reasoning", NonMon@30 -- Thirty Years of Nonmonotonic Reasoning, Lexington, KY, USA, Oct. 22-25, 2010. (Invited speaker)

2009

• James Delgrande, Torsten Schaub, Hans Tompits, and Stefan Woltran, Merging Logic Programs under Answer Set Semantics, 25th International Conference on Logic Programming (ICLP 2009), Lecture Notes in Artificial Intelligence, Vol. 5649, Springer-Verlag, Patricia M. Hill and David Scott Warren (eds), Pasadena, CA, 2009, pp. 160-174.

• James P. Delgrande, Torsten Grote, and Aaron Hunter, A General Approach to the Verification of Cryptographic Protocols Using Answer Set Programming, Tenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'09), Lecture Notes in Artificial Intelligence, Vol. 5753, Springer-Verlag, Esra Erdem, Fangzhen Lin, and Torsten Schaub (eds), Potsdam, Germany, 2009, pp. 355-367.

• Viren Kumar and James P. Delgrande, Optimal Multicore Scheduling: An Application of ASP Techniques, Tenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'09), Lecture Notes in Artificial Intelligence, Vol. 5753, Springer-Verlag, Esra Erdem, Fangzhen Lin, and Torsten Schaub (eds), Potsdam, Germany, 2009, pp. 604-609.

• James P. Delgrande, What Next for ASP? (invited commentary), Tenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'09), Lecture Notes in Artificial Intelligence, Vol. 5753, Springer-Verlag, Esra Erdem, Fangzhen Lin, and Torsten Schaub (eds), Potsdam, Germany, 2009, pp. 616-618.

• James P. Delgrande, Torsten Grote, and Aaron Hunter, Modelling Cryptographic Protocols in a Theory of Action, Ninth International Symposium on Logical Formalizations of Commonsense Reasoning, Toronto, Ontario, June 1-3, 2009.

• James Delgrande, "Relevance, Conditionals,a nd Defeasible Reasoning" Relational Approaches to Knowledge Representation and Learning, Workshop at the 32nd Annual Conference on Artificial Intelligence (KI-2009), Paderborn, Germany, Sept 15, 2009. (Keynote speaker)

• James Delgrande, "What Next for ASP?" Tenth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'09), Potsdam, Germany, 2009, pp. 616-618. (Invited commentary)

2008

• James P. Delgrande, Yi Jin and F. Jeffry Pelletier, Compositional Belief Update, Journal of Artificial Intelligence Research, 32, 2008, pp. 757-791.

• James P. Delgrande, Horn Clause Belief Change: Contraction Functions, Eleventh International Conference on Principles of Knowledge Representation and Reasoning, Sydney, Australia, September 16-19, 2008.

• James P. Delgrande, Torsten Schaub, Hans Tompits and Stefan Woltran, Belief Revision of Logic Programs under Answer Set Semantics, Eleventh International Conference on Principles of Knowledge Representation and Reasoning, Sydney, Australia, September 16-19, 2008.

• Chris Schmidt and James P. Delgrande, Incorporating a Qualitative Ranked Preference System into Planning, Twelth International Workshop on Non-Monotonic Reasoning NMR'2008, Sydney, Australia, 13 - 15 September, 2008.

• James Delgrande and Yi Jin, Parallel Belief Revision, 23rd National Conference on Artificial Intelligence (AAAI-08), Chicago. IL, July 13-17, 2008.

2007

• James P. Delgrande, On a Rule-Based Interpretation of Default Conditionals, Annals of Mathematics and Artificial Intelligence, 48, 2007, pp. 135-167.

• James P. Delgrande, Torsten Schaub, and Hans Tompits, A General Framework for Expressing Preferences in Causal Reasoning and Planning, Journal of Logic and Computation, 17, 2007, pp. 871-907.

• James P. Delgrande and Torsten Schaub, A Consistency-Based Framework for Merging Knowledge Bases, Journal of Applied Logic, 5,3, 2007, pp. 459-477.

• James P. Delgrande, Jérôme Lang, and Torsten Schaub, Belief Change Based on Global Minimisation, 20th International Joint Conference on Artificial Intelligence (IJCAI-07), Hyderabad, India, January 9-12, 2007.

• Aaron Hunter and James P. Delgrande, An Action Description Language for Iterated Belief Change, 20th International Joint Conference on Artificial Intelligence (IJCAI-07), Hyderabad, India, January 9-12, 2007.

• James P. Delgrande, Torsten Schaub, and Hans Tompits, A Preference-Based Framework for Updating Logic Programs, Ninth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'07), Phoenix, Arizona, May 14-16, 2007.

• Aaron Hunter, James P. Delgrande, and Joel Faber, "Belief Change in Answer Set Programming", Ninth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'07), Phoenix, Arizona, May 14-16, 2007.

• Aaron Hunter and James P. Delgrande, Belief Change and Cryptographic Protocol Verification, Twenty-Second Conference on Artificial Intelligence (AAAI-07), Vancouver, BC, July 24-26, 2007.

2006

• Aaron Hunter and James P. Delgrande, Belief Change in the Context of Fallible Actions and Observations, 21st National Conference on Artificial Intelligence (AAAI-06), Boston, MA, July 16-20, 2006.

• James P. Delgrande, Didier Dubois, and Jérôme Lang, Iterated revision as prioritized merging, Tenth International Conference on Principles of Knowledge Representation and Reasoning, Lake District, United Kingdom, June 2-5, 2006, pp. 210-220.

• James P. Delgrande, Towards a Rule-Based Interpretation of Conditional Defaults, Ninth International Symposium on Artificial Intelligence and Mathematics, Fort Lauderdale, Florida, January 4-6, 2006. (Invited paper)

• James P. Delgrande, Torsten Schaub, and Hans Tompits, "A Preference-Based Framework for Updating Logic Programs: Preliminary Report", First International Workshop on Preferences and their Applications in Logic Programming Systems (PREFS 2006), Seattle, August 2006.

• James P. Delgrande, Torsten Schaub, and Hans Tompits, "An Extended Query Language for Action Languages (and its Application to Aggregates and Preferences)", Eleventh International Workshop on Non-Monotonic Reasoning NMR'2006, Lake District, United Kingdom, May 30 - June 1, 2006.

• James P. Delgrande, Daphne H. Liu, Torsten Schaub, and Sven Thiele, "COBA 2.0: A Consistency-Based Belief Change System", Eleventh International Workshop on Non-Monotonic Reasoning NMR'2006, Lake District, United Kingdom, May 30 - June 1, 2006.

• James Delgrande, "Belief Revision Revisited, or: Thoughts on the Scope of Belief Revision", Eleventh International Workshop on Non-Monotonic Reasoning NMR'2006, Lake District, United Kingdom, May 30 - June 1, 2006. (Keynote Speaker)

• James Delgrande "Towards a Rule-Based Interpretation of Conditional Defaults", Special Session on Nonmonotonic Reasoning, Ninth International Symposium on Artificial Intelligence and Mathematics, Fort Lauderdale, Florida January 4-6, 2006. (Invited Speaker)

2005

• Aaron Hunter and James P. Delgrande, Iterated Belief Change: A Transition System Approach, , 19th International Joint Conference on Artificial Intelligence, Edinburgh, Scotland, August 2-5, 2005.
• James P. Delgrande and Torsten Schaub, Expressing Default Logic Variants in Default Logic, Journal of Logic and Computation, 15, 5, 2005, pp. 593-621.
• James P. Delgrande, Abhaya C. Nayak, and Maurice Pagnucco, Gricean Belief Change, Studia Logica, 79, 2005, pp. 97-113.
• James P. Delgrande, Torsten Schaub, and Hans Tompits, "A General Framework for Expressing Preferences in Causal Reasoning and Planning", Seventh International Symposium on Logical Formalizations of Commonsense Reasoning, Corfu, Greece, May 22-24, 2005, pp. 47-54. (Also Technical Report TUD-FI05-04, Technische Universität Dresden.)

• Aaron Hunter and James P. Delgrande, "Using Ranking Functions to Determine Plausible Action Histories", IJCAI-05 Workshop on Nonmonotonic Reasoning, Action, and Change (NRAC'05), Edinburgh, Scotland, August 1 2005, pp. 59-64.

• James Delgrande, Jérôme Lang, Hans Rott, and Jean-Marc Tallon (eds), "Belief Change in Rational Agents: Perspectives from Artificial Intelligence, Philosophy, and Economics", Dagstuhl Seminar Proceedings 05321, http://drops.dagstuhl.de/opus/volltexte/2005/362, Internationales Begegnungs- und Forschungszentrum (IBFI), Schloss Dagstuhl, Germany, 2005.

2004

• James P. Delgrande, Torsten Schaub, Hans Tompits and Stefan Woltran, On Computing Solutions to Belief Change Scenarios, Journal of Logic and Computation, 14,6, December 2004, pp. 801-826.
• James P. Delgrande and Torsten Schaub, Two Approaches to Merging Knowledge Bases, 9th European Conference on Logics in Artificial Intelligence, Lisbon, Portugal, September 2004.
• James P. Delgrande, Abhaya C. Nayak, and Maurice Pagnucco, Conservative Belief Change, American Association for Artificial Intelligence Conference, San Jose, CA, July 2004.
• James P. Delgrande, Torsten Schaub, and Hans Tompits, Domain-Specific Preferences for Causal Reasoning and Planning, Ninth International Conference on Principles of Knowledge Representation and Reasoning, Whistler, Canada, pp. 673-682, June 2004.
• James Delgrande, Torsten Schaub, Hans Tompits, and Kewen Wang, A Classification and Survey of Preference Handling Approaches in Nonmonotonic Reasoning, Computational Intelligence, 20,2, 2004, pp. 308-334.
• Oliver Schulte and James Delgrande, Representing von Neumann-Morgenstern Games in the Situation Calculus, Annals of Mathematics and Artificial Intelligence, 42, 1-3, J. Dix, J. Leite, K. Satoh, eds., Special Issue on "Computational Logic in Multi-Agent Systems", 42, 1-3, pp. 73-101, 2004
• James P. Delgrande and Torsten Schaub, Reasoning with Sets of Defaults in Default Logic, Computational Intelligence, 20,1, 2004, pp. 56-88.
• Diana Cukierman and James Delgrande, "The SOL Time Theory: A Formalization of Structured Temporal Objects and Repetition", Proceedings of the 11th International Symposium on Temporal Representation and Reasoning, IEEE Computer Science Press, Tatihou, France, July 1-3, 2004.

• Diana Cukierman and James Delgrande, "A Theory for Convex Interval Relations including Limit Intervals", Proceedings of the 17th International FLAIRS Conference, Miami Beach, Florida, May 17-19, 2004.

• James P. Delgrande, "Preliminary Considerations on the Modelling of Belief Change Operators by Metric Spaces", Tenth International Workshop on Non-Monotonic Reasoning NMR'2004, Whistler, BC, June 2004.

• James P. Delgrande and Torsten Schaub, "Consistency-Based Approaches to Merging Knowledge Bases", Tenth International Workshop on Non-Monotonic Reasoning NMR'2004, Whistler, BC, June 2004.

2003

• James Delgrande and Torsten Schaub, A Consistency-Based Approach for Belief Change, Artificial Intelligence Journal 151, 1-2, 2003, pp. 1-41.
• James Delgrande, Torsten Schaub, and Hans Tompits, A Framework for Compiling Preferences in Logic Programs, Theory and Practice of Logic Programming 3(2), 2003, pp. 129-187.
• James P. Delgrande, Weak Conditional Logics of Normality, 18th International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15 2003, pp. 873-879.
• James Delgrande, Abhaya Nayak, and Maurice Pagnucco, Prolegomenon to a Theory of Conservative Belief Revision, 18th International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15 2003, pp. 1391-1393.
• James P. Delgrande and Torsten Schaub, On the Relation between Reiter's Default Logic and its (Major) Variants, Seventh European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU-2003), Lecture Notes in Artificial Intelligence, Vol. 2711, Springer-Verlag, T. Nielsen and N. Zhang (Eds.), Aalborg, Denmark, July 2-5, 2003.
• James Delgrande, Abhaya Nayak, and Maurice Pagnucco, "Conservative Belief Change: A Gricean Approach", IJCAI-03 Workshop on Nonmonotonic Reasoning, Action, and Change (NRAC'03), Acapulco, Mexico, August 10-11 2003
• James Delgrande, Odile Papini, and Oliver Schulte, "Considerations on Distance-Based Belief Revision", IJCAI-03 Workshop on Nonmonotonic Reasoning, Action, and Change (NRAC'03), Acapulco, Mexico, August 10-11 2003
• J. Delgrande, M. Gharib, R. Mercer, V. Risch, and and T. Schaub, "Lukaszewicz-style Answer Set Programming: A Preliminary Report", Proceedings of the Second International Workshop on Answer Set Programming (ASP'03), M. De Vos and A. Provetti (Eds), CEUR Workshop Proceedings, Vol. 78, 2003.
• James P. Delgrande, "On the Modelling of Belief Change Operators by Metric Spaces ", Festschrift in Honour of Norman Foo, University of New South Wales, November 2003.

2002

• James P. Delgrande and Torsten Schaub, Reasoning Credulously and Skeptically within a Single Extension, Journal of Applied Non-Classical Logics 12(2), 2002, pp. 259-285.
• James Delgrande and Arvind Gupta, Updating <=,<-Chains, Information Processing Letters, 82, 5, 2002, pp. 261-268.
• James P. Delgrande, Aaron Hunter, and Torsten Schaub, COBA: A Consistency-Based Belief Revision System, JELIA-2002: 8th European Conference on Logic in Artificial Inteligence, Cosenza, Italy, Sept 23-26, 2002, pp. 509-512.
• Oliver Schulte and James P. Delgrande, "Representing von Neumann-Morgenstern Games in the Situation Calculus", AAAI-2002 Workshop on Game Theoretic and Decision Theoretic Agents, Edmonton, July 2002.

• James P. Delgrande, Torsten Schaub, Hans Tompits, and Kewen Wang, "Towards a Classification of Preference Handling Approaches in Nonmonotonic Reasoning", AAAI-2002 Workshop on Preferences in AI and CP: Symbolic Approaches, Edmonton, July 28-29, 2002.

• James P. Delgrande and Matthew Suderman, "Considerations on Compositional Update Operators", Ninth International Workshop on Non-Monotonic Reasoning NMR'2002, Toulouse, France, April 19-21, 2002, pp. 150-159.

• James Delgrande, "A Consistency-Based Paradigm for Belief Change", School of Information Technology and Computer Science, The University of Wollongon, Australia, February 2002. (Distinguished Lecture)

• James Delgrande, "A Computational Model for Belief Change", Australian Knowledge Representation Conventicle, The University of New South Wales, Sydney, Australia, January, 2002. (Invited speaker)

2001

• James Delgrande, Arvind Gupta, and Tim Van Allen, A Comparison of Point-Based Approaches to Qualitative Temporal Reasoning, Artificial Intelligence Journal, 131, 1-2, 2001, pp. 135-170.
• James P. Delgrande, A Minimal Modelling for Successful Knowledge Base Revision, in Frontiers of Belief Revision, Mary-Anne Williams and Hans Rott (eds.), Applied Logic Series, Volume 22, Series Editors: Dov Gabbay and Jon Barwise, Kluwer Academic Publishers, 2001.
• James P. Delgrande, Torsten Schaub, Hans Tompits, and Stefan Woltran, On Computing Solutions to Belief Change Scenarios, Sixth European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU-2001), Lecture Notes in Artificial Intelligence, Vol. 2143, Springer-Verlag, S. Benferhat, P. Besnard (Eds.), Toulouse, France, September 19th - 21th, 2001, pp. 510-521.
• James P. Delgrande and Torsten Schaub, "How to reason credulously and skeptically within a single extension," Sixth European Conference on Symbolic and Quantitative Approaches to Reasoning with Uncertainty (ECSQARU-2001), Lecture Notes in Artificial Intelligence, Vol. 2143, Springer-Verlag, S. Benferhat, P. Besnard (Eds.), Toulouse, France, September 19th - 21th, 2001, pp. 592-603.

• James P. Delgrande, Torsten Schaub, and Hans Tompits, plp: A Generic Compiler for Ordered Logic Programs, Sixth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR'01), Lecture Notes in Artificial Intelligence, Vol. 2173, Springer-Verlag, T. Eiter,W. Faber, M. Truszczyski (Eds.), Vienna, Austria, September 17-19, 2001, pp. 411-415.
• Bradley Bart, James P. Delgrande, and Oliver Schulte, Knowledge and Planning in an Action-Based Multi-agent Framework: A Case Study, 14th Biennial Conference of the Canadian Society for Computational Studies of Intelligence (AI 2001), Lecture Notes in Artificial Intelligence, Vol. 2056, Springer-Verlag, E. Stroulia, S. Matwin (Eds.), Ottawa, ON, June 7-9, 2001, pp. 121-130
• James Delgrande, "A Consistency-Based Paradigm for Belief Change", Fifth Dutch-German Workshop on Nonmonotonic Reasoning Techniques and their Applications(DGNMR'01), Potsdam, Germany, April 2001. (Keynote Speaker)

2000

• James P. Delgrande and Torsten Schaub, Expressing Preferences in Default Logic, Artificial Intelligence Journal, 123, 1-2, 2000, pp. 41-87.
• James P. Delgrande and Torsten Schaub, The Role of Default Logic in Knowledge Representation, in Logic-Based Artificial Intelligence, Jack Minker (ed.), Kluwer Academic Publishers, 2000.
• James P. Delgrande, Torsten Schaub, and Hans Tompits, A Compilation of Brewka and Eiter's Approach to Prioritization, 7th European Workshop on Logic in Artificial Inteligence (JELIA-2000), Malaga, Spain, 29 Sept - 2 Oct, 2000, pp 376-390.
• Diana Cukierman and James P. Delgrande, A Formalization of Structured Temporal Objects and Repetition", 14th European Conference on Artificial Intelligence (ECAI'2000), Berlin, Germany, August 23-25, 2000, pp. 83-87. Also appeared at Seventh International Workshop on Temporal Representation and Reasoning (TIME-2000), Cape Breton, NS, July 7-9, 2000. (Best paper award)
• James P. Delgrande, Torsten Schaub, and Hans Tompits, Logic Programs with Compiled Preferences, 14th European Conference on Artificial Intelligence (ECAI'2000), Berlin, Germany, August 23-25, 2000, pp. 464-468. Also appeared at the Eighth International Workshop on Non-Monotonic Reasoning (NMR'2000), April 9-11, Breckenridge, Colorado
• James P. Delgrande and Torsten Schaub, A Consistency-Based Model for Belief Change: Preliminary Report, American Association for Artificial Intelligence Conference (AAAI'2000), Austin, Texas, July 30 -- August 3, 2000, pp. 392-398. Also appeared at the Eighth International Workshop on Non-Monotonic Reasoning (NMR'2000), April 9-11, 2000, Breckenridge, Colorado.
• James P. Delgrande, Torsten Schaub, and Hans Tompits, A Compiler for Ordered Logic Programs, Eighth International Workshop on Non-Monotonic Reasoning (NMR'2000), April 9-11, Breckenridge, Color

1999

• James P. Delgrande, Considerations on a Similarity-Based Approach to Belief Change, 16th International Joint Conference on Artificial Intelligence (IJCAI'99), Stockholm, Sweden, August 1999, pp. 180-185.
• James P. Delgrande, Arvind Gupta, and Timothy Van Allen, Point-Based Approaches to Qualitative Temporal Reasoning, American Association for Artificial Intelligence Conference (AAAI'99), Orlando, Florida, July 1999, pp. 739-744.
• James Delgrande, "The Role of Default Logic in Knowledge Representation", Workshop on Logic-Based Artificial Intelligence, Washington, D.C., June 1999. (Invited Speaker)

1998

• James P. Delgrande and Jeff Pelletier, A Formal Analysis of Relevance, Erkenntnis, 49, 2, 1998, pp. 137-173.
• James P. Delgrande, On First-Order Conditional Logics, Artificial Intelligence Journal, 105, 1-2, 1998, pp. 105-137.
• Diana Cukierman and James P. Delgrande, Expressing Time Intervals and Repetition within a Formalization of Calendars, Computational Intelligence, 14, 4, 1998, pp. 563-597.
• James P. Delgrande, Conditional Logics for Defeasible Reasoning, Volume 2 of The Handbook of Defeasible Reasoning and Uncertainty Management Systems: Reasoning with Actual and Potential Contradictions, Philippe Besnard and Anthony Hunter (eds.), Series Editors: Dov Gabbay and Philippe Smets, Kluwer Academic Publishers, 1998, pp. 135-173.
• James P. Delgrande and Arvind Gupta, Revising TimeGraph-II, Twelfth Canadian Conference on Artificial Intelligence (AI'98), Vancouver, June 1998.

• James P. Delgrande and Torsten H. Schaub, "Reasoning with Sets of Preferences in Default Logic", Pacific Rim International Conference on Artificial Intelligence, Singapore, H.-Y. Lee and H. Motoda (eds.), Lecture Notes in Artificial Intelligence, Vol. 1531, Springer-Verlag, November 1998, pp 134-145.

• Timothy Van Allen, James P. Delgrande and Arvind Gupta "Qualitative Temporal Reasoning", Pacific Rim International Conference on Artificial Intelligence, Singapore, H.-Y. Lee and H. Motoda (eds.), Lecture Notes in Artificial Intelligence, Vol. 1531, Springer-Verlag, November 1998, pp 305-316.

• James P. Delgrande, "A Minimal Modelling for Successful Knowledge Base Revision: Preliminary Report", International Belief Revision Workshop, in conjunction with The Seventh International Workshop on Nonmonotonic Reasoning, Trento, Italy, May 1998, 16 pages.

• Diana Cukierman and James P. Delgrande, "Towards a formal characterization of temporal repetition with closed time", TIME-98: International Workshop on Temporal Representation and Reasoning, Sanibel Island, Florida, May, 1998, pp. 140-147,

1997

• James P. Delgrande and Torsten Schaub, Compiling reasoning with and about preferences into default logic, 15th International Joint Conference on Artificial Intelligence (IJCAI'97), Nagoya, Japan, August 1997.
• James P. Delgrande and Torsten Schaub, Reasoning with sets of preferences in default logic, The Second IJCAI Workshop on Nonmonotonic Reasoning, Action and Change (NRAC'97), Nagoya, Japan, August 1997.
• James P. Delgrande and Torsten Schaub, Compiling Specificity into Approaches to Nonmonotonic Reasoning, Artificial Intelligence Journal, 90, 1-2, February 1997, pp. 301-348.

• James Delgrande, "On the Role of Default Logic in Knowledge Representation: Preferences, Priorities, and Specificity", Second Australian Workshop on Commonsense Reasoning, Perth, Australia, December 1997. (Keynote Speaker)

1996

• James P. Delgrande and Arvind Gupta, The complexity of minimum partial truth assignments and implication in negation-free formulae. Annals of Mathematics and Artificial Intelligence, Special Issue in Boundaries for Tractability for Artificial Intelligence, M. Hirsch, ed., 1996, pp. 51-67.
• James P. Delgrande and Arvind Gupta, A Representation for Efficient Temporal Reasoning, American Association for Artificial Intelligence Conference (AAAI'96), Portland, Oregon, August 1996.
• James P. Delgrande, Toward a First-Order Conditional Logic for Default Properties, Sixth International Workshop on Nonmonotonic Reasoning (NMR'96), Timberline, Oregon, June 10-12, 1996.
• Diana Cukierman and James P.Delgrande, Characterizing Temporal Repetition, Third International Workshop on Temporal Representation and Reasoning (TIME-96), Key West, Florida, May, 1996.

1995

• James P. Delgrande, Syntactic Conditional Closures for Defeasible Reasoning, 14th International Joint Conference on Artificial Intelligence (IJCAI'95), Montreal, Canada, August 1995.
• Diana Cukierman and James P.Delgrande, A language to Express Time Intervals and Repetition, Second International Workshop on Temporal Representation and Reasoning (TIME-95), Melbourne Beach, Florida, April 26, 1995.
• James P. Delgrande, A Framework for Logics of Explicit Belief, Computational Intelligence, 11, 1, January 1995, pp. 47-88.

1994

• James P. Delgrande, Torsten Schaub, and W. Ken Jackson, Alternative Approaches to Default Logic, Artificial Intelligence Journal, 70, 1-2, October 1994, pp. 167-237.
• James P. Delgrande, A Preference-Based Approach to Default Reasoning: Preliminary Report, American Association for Artificial Intelligence Conference (AAAI'94), Seattle, Washington, July 1994.
• James P. Delgrande and Torsten Schaub, A General Approach to Specificity in Default Reasoning, Fourth International Conference on Principles of Knowledge Representation and Reasoning (KR'94), Bonn, Germany, May 1994, pp. 146-157.

• James P. Delgrande, "On a General Approach to Hedged Reasoning", Invited Commentary on: "Believing on the Basis of Evidence" by Henry Kyburg, Computational Intelligence, 10, 1, 1994, pp. 39-45.

• James P. Delgrande and Torsten Schaub, "Incorporating Specificity into Circumscriptive Theories", KI'94: Advances in Artificial Intelligence, Proceedings of the Eighteenth German Annual Conference on Artificial Intelligence, B. Nebel and L. Dreschler-Fischer (eds.), Lecture Notes in Artificial Intelligence, Vol. 861, Springer-Verlag, Sept. 1994, pp. 272-283.

• James P. Delgrande and Jeff Pelletier, "A Formal Approach to Relevance: Extended Abstract", AAAI Fall Symposium: Relevance, New Orleans, November 4-6, 1994.

• Diana Cukierman and James P. Delgrande, "Hierarchical Decomposition of Time Units", AAAI-94 Workshop on Spatial and Temporal Reasoning, Seattle, WA, July 1994,