7607 search results - page 219 / 1522 » Querying data provenance |
201
Voted
LPAR
2007
Springer
16 years 22 days ago
2007
Springer
We study the data complexity of instance checking and conjunctive query answering in the EL family of description logics, with a particular emphasis on the boundary of tractability...
187
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WEBI
2010
Springer
15 years 4 months ago
2010
Springer
Mobile is becoming a ubiquitous platform for context-aware intelligent computing. One fundamental but usually ignored issue is how to efficiently manage (e.g., index and query) the...
294
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ICDE
2008
IEEE
16 years 8 months ago
2008
IEEE
Answering queries using materialized views has been well studied in the context of structured queries and has shown significant performance benefits. Despite the popularity of keyw...
184
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SPIRE
2009
Springer
16 years 1 months ago
2009
Springer
We propose a method to evaluate queries using a last-resort semantic cache in a distributed Web search engine. The cache stores a group of frequent queries and for each of these qu...
155
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HICSS
2005
IEEE
16 years 6 days ago
2005
IEEE
It is demonstrated how to provide a peer-to-peer system that supports an expressive query language while maintaining efficient distribution over a wide-area network. The key is to...