The alternating fixpoint of logic programs with negation
PODS '89 Selected papers of the eighth ACM SIGACT-SIGMOD-SIGART symposium on Principles of database systems
Answer sets for prioritized logic programs
ILPS '97 Proceedings of the 1997 international symposium on Logic programming
Preferred answer sets for extended logic programs
Artificial Intelligence
Reasoning with Prioritized Defaults
LPKR '97 Selected papers from the Third International Workshop on Logic Programming and Knowledge Representation
Intellectics and Computational Logic (to Wolfgang Bibel on the occasion of his 60th birthday)
A Consistency-Based Model for Belief Change: Preliminary Report
Proceedings of the Seventeenth National Conference on Artificial Intelligence and Twelfth Conference on Innovative Applications of Artificial Intelligence
On specificity in default logic
IJCAI'95 Proceedings of the 14th international joint conference on Artificial intelligence - Volume 2
plp: A Generic Compiler for Ordered Logic Programs
LPNMR '01 Proceedings of the 6th International Conference on Logic Programming and Nonmonotonic Reasoning
Logic programming with ordered disjunction
Eighteenth national conference on Artificial intelligence
Computing preferred answer sets by meta-interpretation in Answer Set Programming
Theory and Practice of Logic Programming
A framework for compiling preferences in logic programs
Theory and Practice of Logic Programming
Two results for prioritized logic programming
Theory and Practice of Logic Programming
Artificial Intelligence - Special issue on nonmonotonic reasoning
Preferred answer sets for ordered logic programs
Theory and Practice of Logic Programming
ACM Transactions on Computational Logic (TOCL)
The DLV system for knowledge representation and reasoning
ACM Transactions on Computational Logic (TOCL)
A framework for prioritized reasoning based on the choice evaluation
Proceedings of the 2007 ACM symposium on Applied computing
On the semantics of logic programs with preferences
Journal of Artificial Intelligence Research
IJCAI'03 Proceedings of the 18th international joint conference on Artificial intelligence
Aggregates in answer set optimization
LPNMR'11 Proceedings of the 11th international conference on Logic programming and nonmonotonic reasoning
WI-IAT '11 Proceedings of the 2011 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Volume 03
Aggregates and priorities in P2P data management systems
Proceedings of the 15th Symposium on International Database Engineering & Applications
On the semantics of logic programs with preferences
JELIA'06 Proceedings of the 10th European conference on Logics in Artificial Intelligence
Aggregates and preferences in logic programming
ISMIS'05 Proceedings of the 15th international conference on Foundations of Intelligent Systems
Dealing with explicit preferences and uncertainty in answer set programming
Annals of Mathematics and Artificial Intelligence
A selective semantics for logic programs with preferences
JELIA'12 Proceedings of the 13th European conference on Logics in Artificial Intelligence
Restoring consistency in p2p deductive databases
SUM'12 Proceedings of the 6th international conference on Scalable Uncertainty Management
RW'13 Proceedings of the 9th international conference on Reasoning Web: semantic technologies for intelligent data access
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We are interested in semantical underpinnings for existing approaches to preference handling in extended logic programming (within the framework of answer set programming). As a starting point, we explore three different approaches that have been recently proposed in the literature. Because these approaches use rather different formal means, we furnish a series of uniform characterizations that allow us to gain insights into the relationships among these approaches. To be more precise, we provide different characterizations in terms of (i) fixpoints, (ii) order preservation, and (iii) translations into standard logic programs. While the two former provide semantics for logic programming with preference information, the latter furnishes implementation techniques for these approaches.