2853 search results - page 430 / 571 » On the Efficiency of Provenance Queries |
161
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WWW
2009
ACM
16 years 7 months ago
2009
ACM
Web search engines often federate many user queries to relevant structured databases. For example, a product related query might be federated to a product database containing thei...
194
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CHI
2007
ACM
16 years 6 months ago
2007
ACM
Current web image search engines still rely on user typing textual description: query word(s) for visual targets. As the queries are often short, general or even ambiguous, the im...
298
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SIGMOD
2009
ACM
16 years 6 months ago
2009
ACM
Labeling schemes lie at the core of query processing for many XML database management systems. Designing labeling schemes for dynamic XML documents is an important problem that ha...
279
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
Sampling is a popular method of data collection when it is impossible or too costly to reach the entire population. For example, television show ratings in the United States are g...
249
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SIGMOD
2005
ACM
16 years 6 months ago
2005
ACM
In this paper, we study the evaluation of skyline queries with partially-ordered attributes. Because such attributes lack a total ordering, traditional index-based evaluation algo...