2853 search results - page 232 / 571 » On the Efficiency of Provenance Queries |
204
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CNL
2009
15 years 7 months ago
2009
Abstract. As it is well-known, querying and managing structured data in natural language is a challenging task due to its ambiguity (syntactic and semantic) and its expressiveness....
181
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JSS
2008
15 years 6 months ago
2008
Many state-of-the-art selectivity estimation methods use query feedback to maintain histogram buckets, thereby using the limited memory efficiently. However, they are "reacti...
277
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ICDE
2006
IEEE
16 years 8 months ago
2006
IEEE
Aggregate monitoring over data streams is attracting more and more attention in research community due to its broad potential applications. Existing methods suffer two problems, 1...
272
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VLDB
2002
ACM
16 years 6 months ago
2002
ACM
Multiversion support for XML documents is needed in many critical applications, such as software configuration control, cooperative authoring, web information warehouses, and "...
233
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DBA
2006
15 years 8 months ago
2006
Indexing time series data is an interesting problem that has attracted much interest in the research community for the last decade. Traditional indexing methods organize the data ...