2063 search results - page 117 / 413 » Containment of Aggregate Queries |
144
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SMC
2010
IEEE
15 years 2 months ago
2010
IEEE
—We outline SoftFacts, an ontology mediated top-k information retrieval system over relational databases. An ontology layer is used to define (in terms of a OWL-QL like Semantic...
137
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CIKM
2010
Springer
15 years 2 months ago
2010
Springer
This paper proposes a ranking method to exploit statistical correlations among pairs of attribute values in relational databases. For a given query, the correlations of the query ...
122
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SAT
2004
Springer
15 years 9 months ago
2004
Springer
Kolaitis and Vardi pointed out that constraint satisfaction and conjunctive query containment are essentially the same problem. We study the Boolean conjunctive queries under a mor...
167
Voted
WSDM
2012
ACM
13 years 12 months ago
2012
ACM
Many vertical search tasks such as local search focus on specific domains. The meaning of relevance in these verticals is domain-specific and usually consists of multiple well-d...
146
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MM
2009
ACM
15 years 11 months ago
2009
ACM
Query suggestion is an effective approach to improve the usability of image search. Most existing search engines are able to automatically suggest a list of textual query terms b...