243 search results - page 10 / 49 » Selectivity Estimation for Boolean Queries |
104
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WAIM
2004
Springer
15 years 2 months ago
2004
Springer
Selectivity estimation of path expressions in querying XML data plays an important role in query optimization. A path expression may contain multiple branches with predicates, each...
VLDB
2005
ACM
15 years 3 months ago
2005
ACM
The largest databases in use today are so large that answering a query exactly can take minutes, hours, or even days. One way to address this problem is to make use of approximati...
158
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VLDB
2002
ACM
15 years 9 months ago
2002
ACM
The view selection problem is to choose a set of views to materialize over a database schema, such that the cost of evaluating a set of workload queries is minimized and such that ...
BIOINFORMATICS
2006
14 years 9 months ago
2006
Motivation: Intervention in a gene regulatory network is used to avoid undesirable states, such as those associated with a disease. Several types of intervention have been studied...
74
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TREC
2007
14 years 10 months ago
2007
Four baseline experiments using standard Indri retrieval facilities and simple query formulation techniques and two experiments using more advanced formulations (dependence models...