2217 search results - page 167 / 444 » Rank-aware Query Optimization |
163
Voted
FOCS
2006
IEEE
16 years 13 days ago
2006
IEEE
We investigate the optimality of (1+ )-approximation algorithms obtained via the dimensionality reduction method. We show that: • Any data structure for the (1 + )-approximate n...
157
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UIST
2005
ACM
15 years 12 months ago
2005
ACM
Decision-theoretic optimization is becoming a popular tool in the user interface community, but creating accurate cost (or utility) functions has become a bottleneck — in most c...
170
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ICDCSW
2003
IEEE
15 years 11 months ago
2003
IEEE
—One of the principal characteristics of large scale wireless sensor networks is their distributed, multi-hop nature. Due to this characteristic, applications such as query propa...
274
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PODS
2009
ACM
16 years 7 months ago
2009
ACM
Let be a finite, ordered alphabet, and consider a string x = x1x2 . . . xn n . A secondary index for x answers alphabet range queries of the form: Given a range [al, ar] , retu...
227
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EDBT
2010
ACM
16 years 27 days ago
2010
ACM
Compressed bitmap indexes are increasingly used for efficiently querying very large and complex databases. The Word Aligned Hybrid (WAH) bitmap compression scheme is commonly rec...