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» Recycling Computed Answers in Rewrite Systems for Abduction
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ADBIS
2000
Springer
188views Database» more  ADBIS 2000»
14 years 27 days ago
Algorithms for Rewriting Aggregate Queries Using Views
Queries involving aggregation are typical in a number of database research areas, such as data warehousing, global information systems and mobile computing. One of the main ideas ...
Sara Cohen, Werner Nutt, Alexander Serebrenik
LPNMR
2009
Springer
14 years 1 months ago
Manifold Answer-Set Programs for Meta-reasoning
Abstract. In answer-set programming (ASP), the main focus usually is on computing answer sets which correspond to solutions to the problem represented by a logic program. Simple re...
Wolfgang Faber, Stefan Woltran
VLDB
2011
ACM
245views Database» more  VLDB 2011»
13 years 3 months ago
Normalization and optimization of schema mappings
Schema mappings are high-level specifications that describe the relationship between two database schemas. They are an important tool in several areas of database research, notab...
Georg Gottlob, Reinhard Pichler, Vadim Savenkov
PADL
2009
Springer
14 years 9 months ago
Layered Models Top-Down Querying of Normal Logic Programs
Abstract. For practical applications, the use of top-down query-driven proofprocedures is essential for an efficient use and computation of answers using Logic Programs as knowledg...
Alexandre Miguel Pinto, Luís Moniz Pereira
CLEF
2005
Springer
14 years 2 months ago
A Logic Programming Based Approach to QA@CLEF05 Track
Abstract. In this paper the methodology followed to build a questionanswering system for the Portuguese language is described. The system modules are built using computational ling...
Paulo Quaresma, Irene Pimenta Rodrigues