2546 search results - page 131 / 510 » Managing long-running queries |
158
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CIKM
2006
Springer
15 years 10 months ago
2006
Springer
In this paper we address the issue of continuous keyword queries on multiple textual streams. This line of work represents a significant departure from previous keyword search mod...
172
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CIKM
2005
Springer
15 years 8 months ago
2005
Springer
We consider the general problem of tracking moving objects in sensor networks. The specific application we consider is that of tracking a chemical plume moving over a large infra...
163
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MONET
2002
15 years 6 months ago
2002
Many cache management schemes designed for mobile environments are based on invalidation reports (IRs). However, IR-based approach suffers from long query latency and it cannot eff...
167
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SIGMOD
2011
ACM
14 years 9 months ago
2011
ACM
We are witnessing an exciting revival of interest in recursive Datalog queries in a variety of emerging application domains such as data integration, information extraction, netwo...
252
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SIGMOD
2007
ACM
16 years 6 months ago
2007
ACM
Good cardinality estimates are critical for generating good execution plans during query optimization. Complex predicates, correlations between columns, and user-defined functions...