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VLDB
1992
ACM
137views Database» more  VLDB 1992»
13 years 11 months ago
Random Sampling from Pseudo-Ranked B+ Trees
In the past, two basic approaches for sampling f5-om B+ trees have been suggested: sampling from the ranked trees and acceptance/rejection sampling i?om non-ranked trees. The firs...
Gennady Antoshenkov
MICCAI
2007
Springer
14 years 8 months ago
Robust Computation of Mutual Information Using Spatially Adaptive Meshes
Abstract. We present a new method for the fast and robust computation of information theoretic similarity measures for alignment of multi-modality medical images. The proposed meth...
Hari Sundar, Dinggang Shen, George Biros, Chenyang...
P2P
2009
IEEE
126views Communications» more  P2P 2009»
14 years 2 months ago
Robust Lifetime Measurement in Large-Scale P2P Systems with Non-Stationary Arrivals
—Characterizing user churn has become an important topic in studying P2P networks, both in theoretical analysis and system design. Recent work [26] has shown that direct sampling...
Xiaoming Wang, Zhongmei Yao, Yueping Zhang, Dmitri...
IJON
2007
119views more  IJON 2007»
13 years 7 months ago
Finite sample effects of the fast ICA algorithm
Many algorithms for independent component analysis (ICA) and blind source separation (BSS) can be considered particular instances of a criterion based on the sum of two terms: C(Y...
Sergio Bermejo
WSC
2004
13 years 9 months ago
A Unified Approach for Finite-Dimensional, Rare-Event Monte Carlo Simulation
We consider the problem of estimating the small probability that a function of a finite number of random variables exceeds a large threshold. Each input random variable may be lig...
Zhi Huang, Perwez Shahabuddin