208 search results - page 6 / 42 » Efficient Computation of Multiple Group By Queries |
183
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KES
2010
Springer
15 years 2 months ago
2010
Springer
Exploratory Learning Environments (ELEs) allow learners to approach a problem in different ways; they are particularly suitable for ill-defined problems where knowledge is less str...
136
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GRID
2007
Springer
15 years 8 months ago
2007
Springer
We propose strategies to efficiently execute a query workload, which consists of multiple related queries submitted against a scientific dataset, on a distributed-memory system in...
158
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WWW
2008
ACM
15 years 4 months ago
2008
ACM
We propose a novel Partition Path-Based (PPB) grouping strategy to store compressed XML data in a stream of blocks. In addition, we employ a minimal indexing scheme called Block S...
146
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VLDB
2002
ACM
15 years 4 months ago
2002
ACM
Query optimization is a computationally intensive process, especially for complex queries. We present here a tool, called PLASTIC, that can be used by query optimizers to amortize...
150
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STOC
2003
ACM
16 years 4 months ago
2003
ACM
The problem of cooperatively performing a set of t tasks in a decentralized setting where the computing medium is subject to failures is one of the fundamental problems in distrib...