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VLDB
1992
ACM
137views Database» more  VLDB 1992»
15 years 7 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
130
Voted
MICCAI
2007
Springer
16 years 4 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»
15 years 10 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»
15 years 3 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
164
Voted
WSC
2004
15 years 4 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