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176
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SAC
2011
ACM
14 years 9 months ago
2011
ACM
Semantic caching augments cached data with a semantic description of the data. These semantic descriptions can be used to improve execution time for similar queries by retrieving ...
160
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DOLAP
2007
ACM
15 years 10 months ago
2007
ACM
Expressing preferences when querying databases is a natural way to avoid empty results and information flooding, and in general to rank results so that the user may first see the ...
156
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BTW
2005
Springer
16 years 5 days ago
2005
Springer
: Optimizers in modern DBMSs utilize a cost model to choose an efficient query execution plan (QEP) among all possible ones for a given query. The accuracy of the cost estimates de...
172
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CIKM
2009
Springer
16 years 1 months ago
2009
Springer
Information retrieval systems conventionally assess document relevance using the bag of words model. Consequently, relevance scores of documents retrieved for different queries a...
198
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CLEF
2007
Springer
16 years 24 days ago
2007
Springer
This paper accounts for Priberam's participation in the monolingual question answering (QA) track of CLEF 2007. In previous participations, Priberam’s QA system obtained en...