14761 search results - page 2875 / 2953 » Optimization in Data Mining |
211
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SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Two trends are converging to make the CPU cost of a table scan a more important component of database performance. First, table scans are becoming a larger fraction of the query p...
128
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PODS
2008
ACM
16 years 4 months ago
2008
ACM
We consider a fundamental flow maximization problem that arises during the evaluation of multiple overlapping queries defined on a data stream, in a heterogenous parallel environm...
131
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EDBT
2008
ACM
16 years 4 months ago
2008
ACM
Enterprises may have multiple database systems spread across the organization for redundancy or for serving different applications. In such systems, query workloads can be distrib...
154
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ICDE
2010
IEEE
16 years 4 months ago
2010
IEEE
A large fraction of an XML document typically consists of text data. The XPath query language allows text search via the equal, contains, and starts-with predicates. Such predicate...
157
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ICDE
2010
IEEE
16 years 4 months ago
2010
IEEE
Keyword search is considered to be an effective information discovery method for both structured and semistructured data. In XML keyword search, query semantics is based on the con...