9683 search results - page 311 / 1937 » Query performance prediction |
151
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CINQ
2004
Springer
15 years 9 months ago
2004
Springer
We consider the problem of how one can estimate the support of Boolean queries given a collection of frequent itemsets. We describe an algorithm that truncates the inclusion-exclus...
123
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DAWAK
2003
Springer
15 years 9 months ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...
126
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ECSQARU
2003
Springer
15 years 9 months ago
2003
Springer
Abstract. The Hugin and Shenoy–Shafer architectures are two variations on the jointree algorithm, which exhibit different tradeoffs with respect to efficiency and query answeri...
143
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DEXA
2008
Springer
15 years 5 months ago
2008
Springer
In this research, we propose to use the discrete cosine transform to approximate the cumulative distributions of data cube cells' values. The cosine transform is known to have...
128
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EJASMP
2010
14 years 11 months ago
2010
Spoken utterance retrieval was largely studied in the last decades, with the purpose of indexing large audio databases or of detecting keywords in continuous speech streams. While...