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ICDE
2003
IEEE
105views Database» more  ICDE 2003»
15 years 11 months ago
Efficient Creation of Statistics over Query Expressions
Query optimizers use base-table statistics to derive statistics on the sub-plans that are enumerated during optimization. In practice, traditional optimizers rely on a number of s...
Nicolas Bruno, Surajit Chaudhuri
AINA
2005
IEEE
14 years 11 months ago
Estimations on the Security Aspect of Brand's Electronic Cash Scheme
In Crypto’93, Stefan Brands [1] proposed a very efficient off-line electronic cash. Then, the subsequent researchers such as Ernest Foo [2,3], WK Yip [4] and Yiannis [5] develop...
Chang Yu Cheng, Jasmy Yunus, Kamaruzzaman Seman
ICC
2007
IEEE
128views Communications» more  ICC 2007»
15 years 4 months ago
An Efficient Selective Receiver for STBC Scheme
—In this paper, we propose an efficient selective receiver for space-time block coding (STBC) scheme. In this proposed scheme, we divide the received signals into two groups. By ...
Lijun Liu, Sooyoung Kim, Myoung-Seob Lim
VC
2008
93views more  VC 2008»
14 years 9 months ago
Efficient product sampling using hierarchical thresholding
Abstract We present an efficient method for importance sampling the product of multiple functions. Our algorithm computes a quick approximation of the product on-the-fly, based on ...
Fabrice Rousselle, Petrik Clarberg, Luc Leblanc, V...
CGF
2002
129views more  CGF 2002»
14 years 9 months ago
Efficient Multidimensional Sampling
Image synthesis often requires the Monte Carlo estimation of integrals. Based on a generalized concept of stratification we present an efficient sampling scheme that consistently ...
Thomas Kollig, Alexander Keller