2853 search results - page 141 / 571 » On the Efficiency of Provenance Queries |
197
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PODS
2008
ACM
16 years 6 months ago
2008
ACM
We study complexity and approximation of queries in an expressive query language for probabilistic databases. The language studied supports the compositional use of confidence com...
166
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ICC
2007
IEEE
16 years 23 days ago
2007
IEEE
— In contrast to the traditional wireless sensor network (WSN) applications that perform only data collection and aggregation, new generation of information processing applicatio...
185
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AMW
2010
15 years 8 months ago
2010
In this work we present in-network techniques to improve the efficiency of spatial aggregate queries. Such queries are very common in a sensornet setting, demanding more targeted t...
208
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MMDB
2003
ACM
15 years 11 months ago
2003
ACM
The increased use of video data sets for multimedia-based applications has created a demand for strong video database support, including efficient methods for handling the content...
160
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EDBT
2002
ACM
16 years 6 months ago
2002
ACM
Abstract. Aggregate window queries return summarized information about objects that fall inside a query rectangle (e.g., the number of objects instead of their concrete ids). Tradi...