3724 search results - page 673 / 745 » Timed regular expressions |
146
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
An important problem for many location-based applications is the continuous evaluation of proximity relations among moving objects. These relations express whether a given set of ...
167
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
170
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SIGMOD
2006
ACM
15 years 10 months ago
2006
ACM
Given a dataset P and a preference function f, a top-k query retrieves the k tuples in P with the highest scores according to f. Even though the problem is well-studied in convent...
159
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SIGMOD
2005
ACM
15 years 10 months ago
2005
ACM
A windowed query operator breaks a data stream into possibly overlapping subsets of data and computes results over each. Many stream systems can evaluate window aggregate queries....
104
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EDBT
2004
ACM
15 years 10 months ago
2004
ACM
XML makes data flexible in representation and easily portable on the Web but it also substantially inflates data size as a consequence of using tags to describe data. Although many...