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VLDB
1990
ACM
106views Database» more  VLDB 1990»
13 years 11 months ago
The Time Index: An Access Structure for Temporal Data
In this paper, we describe a new indexing technique, the time indez, for improving the performance of certain classes of temporal queries. The time index can be used to retrieve v...
Ramez Elmasri, Gene T. J. Wuu, Yeong-Joon Kim
SIGMOD
1997
ACM
160views Database» more  SIGMOD 1997»
13 years 11 months ago
Improved Query Performance with Variant Indexes
: The read-mostly environment of data warehousing makes it possible to use more complex indexes to speed up queries than in situations where concurrent updatesare present. The curr...
Patrick E. O'Neil, Dallan Quass
CISC
2005
Springer
107views Cryptology» more  CISC 2005»
13 years 9 months ago
A Remark on Implementing the Weil Pairing
We propose an improved implementation of modified Weil pairings. By reduction of operations in the extension field to those in the base field, we can save some operations in the...
Cheol-Min Park, Myung-Hwan Kim, Moti Yung
CVPR
2008
IEEE
14 years 9 months ago
Multiple-instance ranking: Learning to rank images for image retrieval
We study the problem of learning to rank images for image retrieval. For a noisy set of images indexed or tagged by the same keyword, we learn a ranking model from some training e...
Yang Hu, Mingjing Li, Nenghai Yu
ICCV
2007
IEEE
14 years 9 months ago
Methods for space line localization from single catadioptric images: new proposals and comparisons
Line localization from a single image of a central camera is an ill-posed problem unless other constraints or apriori knowledge are exploited. Recently, it has been proved that no...
Vincenzo Caglioti, Simone Gasparini, Pierluigi Tad...