902 search results - page 59 / 181 » Efficient and Extensible Algorithms for Multi Query Optimiza... |
153
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SSD
2007
Springer
15 years 8 months ago
2007
Springer
We address continuously processing an aggregation join query over data streams. Queries of this type involve both join and aggregation operations, with windows specified on join ...
145
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ICC
2009
IEEE
15 years 5 days ago
2009
IEEE
Abstract--The highly dynamic nature of infrastructureless adhoc networks poses new challenges during resource discovery. In this paper, we propose a novel algorithm for resource di...
112
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MONET
2002
15 years 2 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...
135
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SIGMOD
2003
ACM
16 years 2 months ago
2003
ACM
Recent years witnessed an increasing interest in researches in XML, partly due to the fact that XML has now become the de facto standard for data interchange over the internet. A ...
131
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SIGMOD
2009
ACM
15 years 9 months ago
2009
ACM
The state of the art commercial query optimizers employ cost-based optimization and exploit dynamic programming (DP) to find the optimal query execution plan (QEP) without evalua...