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125
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CODES
2008
IEEE
15 years 10 months ago
System-level mitigation of WID leakage power variability using body-bias islands
Adaptive Body Biasing (ABB) is a popularly used technique to mitigate the increasing impact of manufacturing process variations on leakage power dissipation. The efficacy of the ...
Siddharth Garg, Diana Marculescu
114
Voted
ERSHOV
2006
Springer
15 years 7 months ago
Chase of Recursive Queries
In this work, we present a semantic query optimization technique to improve the efficiency of the evaluation of a subset of SQL:1999 recursive queries. Using datalog notation, we c...
Nieves R. Brisaboa, Antonio Fariña, Miguel ...
236
Voted
ICDE
2000
IEEE
125views Database» more  ICDE 2000»
16 years 5 months ago
An Algebraic Compression Framework for Query Results
Decision-support applications in emerging environments require that SQL query results or intermediate results be shipped to clients for further analysis and presentation. These cl...
Zhiyuan Chen, Praveen Seshadri
141
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SIGMOD
2004
ACM
142views Database» more  SIGMOD 2004»
16 years 3 months ago
Conditional Selectivity for Statistics on Query Expressions
Cardinality estimation during query optimization relies on simplifying assumptions that usually do not hold in practice. To diminish the impact of inaccurate estimates during opti...
Nicolas Bruno, Surajit Chaudhuri
133
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APWEB
2005
Springer
15 years 9 months ago
Summarizing Spatial Relations - A Hybrid Histogram
Summarizing topological relations is fundamental to many spatial applications including spatial query optimization. In this paper, we examine the selectivity estimation for range w...
Qing Liu, Xuemin Lin, Yidong Yuan