7167 search results - page 722 / 1434 » Answer Set Programming |
191
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PODS
2006
ACM
16 years 7 months ago
2006
ACM
Query containment is a fundamental algorithmic problem in database query processing and optimization. Under set semantics, the query-containment problem for conjunctive queries ha...
157
Voted
DCC
2006
IEEE
16 years 6 months ago
2006
IEEE
Abstract. We propose measures for compressed data structures, in which space usage is measured in a data-aware manner. In particular, we consider the fundamental dictionary problem...
251
Voted
SODA
2010
ACM
16 years 4 months ago
2010
ACM
Bidimensionality theory appears to be a powerful framework in the development of meta-algorithmic techniques. It was introduced by Demaine et al. [J. ACM 2005 ] as a tool to obtai...
226
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ICTAI
2009
IEEE
16 years 1 months ago
2009
IEEE
Abstract—In distributed environments, access control decisions depend on statements of multiple agents rather than only one central trusted party. However, existing policy langua...
218
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ADBIS
2004
Springer
16 years 18 days ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...