2724 search results - page 281 / 545 » Optimizing Queries on Files |
150
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NIS
1998
15 years 4 months ago
1998
The execution time of a large query depends mainly on the memory utilization which should avoid disk accesses for intermediate results. Poor memory management can hurt performance ...
271
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ICDE
2008
IEEE
16 years 5 months ago
2008
IEEE
Given a record set D and a query score function F, a top-k query returns k records from D, whose values of function F on their attributes are the highest. In this paper, we investi...
155
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KDD
2009
ACM
16 years 5 months ago
2009
ACM
Search queries are typically very short, which means they are often underspecified or have senses that the user did not think of. A broad latent query aspect is a set of keywords ...
220
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VLDB
2004
ACM
16 years 4 months ago
2004
ACM
Ranking queries produce results that are ordered on some computed score. Typically, these queries involve joins, where users are usually interested only in the top-k join results....
160
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VLDB
2005
ACM
15 years 10 months ago
2005
ACM
Devising a scheme for efficient and scalable querying of Resource Description Framework (RDF) data has been an active area of current research. However, most approaches define new...