620 search results - page 59 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
231
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SIGMOD
2008
ACM
16 years 4 months ago
2008
ACM
Graphs are widely used to model real world objects and their relationships, and large graph datasets are common in many application domains. To understand the underlying character...
171
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IPSN
2007
Springer
15 years 10 months ago
2007
Springer
We study the problem of aggregating data from a sparse set of nodes in a wireless sensor network. This is a common situation when a sensor network is deployed to detect relatively...
201
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AAMAS
2011
Springer
14 years 10 months ago
2011
Springer
We study the case where agents have preferences over ranges (intervals) of values, and we wish to elicit and aggregate these preferences. For example, consider a set of climatologi...
159
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CORR
1999
Springer
15 years 3 months ago
1999
Springer
Complex queries are becoming commonplace, with the growing use of decision support systems. These complex queries often have a lot of common sub-expressions, either within a singl...
236
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SIGMOD
2007
ACM
16 years 4 months ago
2007
ACM
Incomplete information arises naturally in numerous data management applications. Recently, several researchers have studied query processing in the context of incomplete informat...