9683 search results - page 1201 / 1937 » Predicting query performance |
189
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SIGMOD
1994
ACM
15 years 11 months ago
1994
ACM
We describe an algorithm for estimating the number of page fetches for a partial or complete scan of a B-tree index. The algorithm obtains estimates for the number of page fetches ...
209
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DASFAA
2007
IEEE
15 years 11 months ago
2007
IEEE
Label stream partition is a useful technique to reduce the input I/O cost of holistic twig join by pruning useless streams beforehand. The Prefix Path Stream (PPS) partition scheme...
228
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SIGIR
2010
ACM
15 years 11 months ago
2010
ACM
Ranking search results is a fundamental problem in information retrieval. In this paper we explore whether the use of proximity and phrase information can improve web retrieval ac...
197
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ICCS
2007
Springer
15 years 11 months ago
2007
Springer
Knowledge representation (KR) is used to store and retrieve meaningful data. This data is saved using dynamic data structures that are suitable for the style of KR being implemente...
217
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BIBE
2004
IEEE
15 years 11 months ago
2004
IEEE
Numerous genomic annotations are currently stored in different web-accessible databanks that scientists need to mine with user-defined queries and in a batch mode to orderly integ...