9683 search results - page 390 / 1937 » Query performance prediction |
226
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SIGMOD
2008
ACM
16 years 5 months ago
2008
ACM
Uncertain data is inherent in a few important applications such as environmental surveillance and mobile object tracking. Top-k queries (also known as ranking queries) are often n...
221
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SIGMOD
2008
ACM
16 years 5 months ago
2008
ACM
Lately the advances in centralized database management systems show a trend towards supporting rank-aware query operators, like top-k, that enable users to retrieve only the most ...
131
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SSDBM
2009
IEEE
15 years 11 months ago
2009
IEEE
We present a novel sensor network query processing architecture that (a) covers all the query optimization phases that are required to map a declarative query to executable code; ...
139
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WAIM
2009
Springer
15 years 11 months ago
2009
Springer
Abstract. Modern large distributed applications, such as telecommunication and banking services, need to respond instantly to a huge number of queries within a short period of time...
130
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SIGIR
2009
ACM
15 years 11 months ago
2009
ACM
In this paper we examine user queries with respect to diversity: providing a mix of results across different interpretations. Using two query log analysis techniques (click entrop...