243 search results - page 13 / 49 » Selectivity Estimation for Boolean Queries |
160
Voted
SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
We present a complete XPath cost-based optimization and execution framework and demonstrate its effectiveness and efficiency for a variety of queries and datasets. The framework i...
108
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CVPR
2009
IEEE
16 years 4 months ago
2009
IEEE
We describe an algorithm for similar-image search which
is designed to be efficient for extremely large collections of
images. For each query, a small response set is selected by...
148
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SIGMOD
2005
ACM
15 years 9 months ago
2005
ACM
This paper introduces RankSQL, a system that provides a systematic and principled framework to support efficient evaluations of ranking (top-k) queries in relational database syst...
VLDB
1997
ACM
15 years 1 months ago
1997
ACM
The result size of a query that involves multiple attributes from the same relation depends on these attributes’ joint data distribution,i.e., the frequencies of all combination...
68
Voted
SIGIR
2009
ACM
15 years 4 months ago
2009
ACM
The need for evaluating large amounts of topics (queries) makes IR evaluation an uneasy task. In this paper, we study a topic selection problem for IR evaluation. The selection cr...