298 search results - page 24 / 60 » Query Rewriting in DL-Lite_^(HN)_horn |
107
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COOPIS
2003
IEEE
15 years 4 months ago
2003
IEEE
We consider the problem of query evaluation in Peer-to-Peer (P2P) systems that support semantic-based retrieval services. We confine ourselves to the case where the peers employ t...
78
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SIGIR
2010
ACM
14 years 11 months ago
2010
ACM
We present a novel approach to query reformulation which combines syntactic and semantic information by means of generalized Levenshtein distance algorithms where the substitution...
ADBIS
2004
Springer
15 years 4 months 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...
PODS
2000
ACM
15 years 3 months ago
2000
ACM
The problem of query containment is fundamental to many aspects of database systems, including query optimization, determining independence of queries from updates, and rewriting ...
158
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ICDT
2009
ACM
15 years 11 months ago
2009
ACM
This article deals with consistent query answering to conjunctive queries under primary key constraints. The repairs of an inconsistent database db are obtained by selecting a max...