Preferred answer sets for extended logic programs
Artificial Intelligence
An Overview of Cooperative Answering in Databases
FQAS '98 Proceedings of the Third International Conference on Flexible Query Answering Systems
JELIA '00 Proceedings of the European Workshop on Logics in Artificial Intelligence
A Compilation of Updates plus Preferences
JELIA '02 Proceedings of the European Conference on Logics in Artificial Intelligence
Well-founded semantics for extended logic programs with dynamic preferences
Journal of Artificial Intelligence Research
A Model for Contextual Cooperative Query Answering in E-Commerce Applications
FQAS '09 Proceedings of the 8th International Conference on Flexible Query Answering Systems
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This paper discusses the use of usage information to enhance cooperative behaviour from query answering systems. A user can pose a query to the system by providing (at query time) update and preference information. Updates allow us to model dynamically evolving worlds and preferences allow us to facilitate the retrieval of information by targeting the answers of the system with respect to users' interests in a given context.