649 search results - page 71 / 130 » Improved and Optimized Partitioning Techniques in Database Q... |
165
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EDBT
2002
ACM
16 years 3 months ago
2002
ACM
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
136
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EDBT
2006
ACM
16 years 3 months ago
2006
ACM
Abstract. Many different index structures have been proposed for spatial databases to support efficient query processing. However, most of these index structures suffer from an exp...
215
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ARTDB
1997
Springer
15 years 8 months ago
1997
Springer
This paper proposes a strategy for parallel composite event detection in Active database systems (DBS). Up to now, the detection is sequential and totally synchronized, and thus p...
206
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SIGMOD
2007
ACM
16 years 3 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...
123
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ICA
2007
Springer
15 years 7 months ago
2007
Springer
Deriving a thematically meaningful partition of an unlabeled document corpus is a challenging task. In this context, the use of document representations based on latent thematic ge...