Logic Programming and Nonmonotonic Reasoning

Invited Papers.- A Computational Logic Approach to Heterogenous Agent Systems.- Declarative Information Extraction, Web Crawling, and Recursive Wrapping with Lixto.- On The Complexity of Model Checking and Inference in Minimal Models.- Data Integration Needs Reasoning.- Nonmonotomic Inductive Logic Programming.- Regular Papers.- Strong Equivalence for Logic Programs and Default Theories (Made Easy).- On the Effect of Default Negation on the Expressiveness of Disjunctive Rules.- On the Expressibility of Stable Logic Programming.- On the Relationship between Defeasible Logic and Well-Founded Semantics.- A Comparative Study of Well-Founded Semantics for Disjunctive Logic Programs.- Reasoning with Open Logic Programs.- Representation of Incomplete Knowledge by Induction of Default Theories.- Explicity Using Default Knowledge in Concept Learning: An Extended Description Logics Plus Strict and Default Rules.- Declarative Specification and Solution of Combinatorial Auctions Using Logic Programming.- Bounded LTL Model Checking with Stable Models.- Diagnosing Physical Systems in A-Prolog.- Planning with Different Forms of Domain-Dependent Control Knowledge — An Answer Set Programming Approach.- Encoding Solutions of the Frame Problem in Dynamic Logic.- ?-RES: Reasoning about Actions, Events and Observations.- Omega-Restricted Logic Programs.- Improving ASP Instantiators by Join-Ordering Methods.- Optimizing the Computation of Heuristics for Answer Set Programming Systems.- New Generation Systems for Non-monotonic Reasoning.- Algorithms for Computing X-Minimal Models.- Fixpoint Characterizations for Many-Valued Disjunctive Logic Programs with Probabilistic Semantics.- Multi-adjoint Logic Programming with Continous Semantics.- Multi-dimensional Dynamic KnowledgeRepresentation.- Antitonic Logic Programs.- System Description.- A-system: Declarative Programming with Abduction.- An Update Front-End for Extended Logic Programs.- aspps — An Implementation of Answer-Set Programming with Propositional Schemata.- NoMoRe: A System for Non-Monotonic Reasoning under Answer Set Semantics.- plp: A Generic Compiler for Ordered Logic Programs.- Prototypes for Reasoning with Infinite Stable Models and Function Symbols.- psmodels: Stable Models Based on Pertinence.- System Description: DLV.- System Description: The DLVK Planning System.- The Smodels System.- The USA-Advisor: A Case Study in Answer Set Planning.