Logic Programming and Nonmonotonic Reasoning 8th International Conference, LPNMR 2005, Diamante, Italy, September 5-8, 2005, Proceedings

This book constitutes the refereed proceedings of the 8th International Conference on Logic Programming and Nonmonotonic Reasoning, LPNMR 2005, held in Diamante, Italy in September 2005.
The 25 revised full papers, 16 revised for the system and application tracks presented together with 3 invited papers were carefully reviewed and selected for presentation. Among the topics addressed are semantics of new and existing languages; relationships between formalisms; complexity and expressive power; LPNMR systems: development of inference algorithms and search heuristics, updates and other operations, uncertainty, and applications in planning, diagnosis, system descriptions, comparisons and evaluations; software engineering, decision making, and other domains; LPNMR languages: extensions by new logical connectives and new inference capabilities, applications in data integration and exchange systems, and methodology of representing knowledge.

Invited Papers.- Nonmonotonic Reasoning in FLORA-2.- Data Integration and Answer Set Programming.- Halo I: A Controlled Experiment for Large Scale Knowledge Base Development.- ASP Foundations.- Unfounded Sets for Disjunctive Logic Programs with Arbitrary Aggregates.- Loops: Relevant or Redundant?.- Approximating Answer Sets of Unitary Lifschitz-Woo Programs.- On Modular Translations and Strong Equivalence.- ASP Extensions.- Guarded Open Answer Set Programming.- External Sources of Computation for Answer Set Solvers.- Answer Sets for Propositional Theories.- Applications.- An ID-Logic Formalization of the Composition of Autonomous Databases.- On the Local Closed-World Assumption of Data-Sources.- Computing Dialectical Trees Efficiently in Possibilistic Defeasible Logic Programming.- Actions and Causations.- An Approximation of Action Theories of and Its Application to Conformant Planning.- Game-Theoretic Reasoning About Actions in Nonmonotonic Causal Theories.- Some Logical Properties of Nonmonotonic Causal Theories.- odular-?: An Elaboration Tolerant Approach to the Ramification and Qualification Problems.- Algorithms and Computation.- Platypus: A Platform for Distributed Answer Set Solving.- Solving Hard ASP Programs Efficiently.- Mode-Directed Fixed Point Computation.- Lookahead in Smodels Compared to Local Consistencies in CSP.- Foundations.- Nested Epistemic Logic Programs.- An Algebraic Account of Modularity in ID-Logic.- Default Reasoning with Preference Within Only Knowing Logic.- Semantics.- A Social Semantics for Multi-agent Systems.- Revisiting the Semantics of Interval Probabilistic Logic Programs.- Routley Semantics for Answer Sets.- The Well Supported Semantics for Multidimensional Dynamic Logic Programs.- Application Track.- Application ofSmodels in Quartet Based Phylogeny Construction.- Using Answer Set Programming for a Decision Support System.- Data Integration: a Challenging ASP Application.- Abduction and Preferences in Linguistics.- Inference of Gene Relations from Microarray Data by Abduction.- System Track.- nomore: A System for Computing Preferred Answer Sets.- Integrating an Answer Set Solver into Prolog: - .- circ2dlp — Translating Circumscription into Disjunctive Logic Programming.- Pbmodels — Software to Compute Stable Models by Pseudoboolean Solvers.- KMonitor– A Tool for Monitoring Plan Execution in Action Theories.- The nomore++ System.- Smodels A — A System for Computing Answer Sets of Logic Programs with Aggregates.- A DLP System with Object-Oriented Features.- Testing Strong Equivalence of Datalog Programs – Implementation and Examples.- SELP – A System for Studying Strong Equivalence Between Logic Programs.- cmodels – SAT-Based Disjunctive Answer Set Solver.