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TWC
2010
13 years 4 months ago
Indoor localization with channel impulse response based fingerprint and nonparametric regression
Abstract--In this paper, we propose a fingerprint-based localization scheme that exploits the location dependency of the channel impulse response (CIR). We approximate the CIR by a...
Yunye Jin, Wee-Seng Soh, Wai-Choong Wong
MSV
2004
13 years 11 months ago
S(b)-Trees: An Optimal Balancing of Variable Length Keys
The paper studies the problem of maintaining external dynamic dictionaries with variable length keys. We introduce a new type of balanced trees, called S(b)-trees, which generaliz...
Konstantin V. Shvachko
JNS
2008
59views more  JNS 2008»
13 years 9 months ago
The Effect of Surface Tension on the Moore Singularity of Vortex Sheet Dynamics
We investigate the regularization of Moore's singularities by surface tension in the evolution of vortex sheets and its dependence on Weber number (which is inversely proport...
Francisco de la Hoz, M. A. Fontelos, L. Vega
STOC
2010
ACM
195views Algorithms» more  STOC 2010»
14 years 2 months ago
Efficiently Learning Mixtures of Two Gaussians
Given data drawn from a mixture of multivariate Gaussians, a basic problem is to accurately estimate the mixture parameters. We provide a polynomial-time algorithm for this proble...
Adam Tauman Kalai, Ankur Moitra, and Gregory Valia...
WWW
2004
ACM
14 years 10 months ago
Scheduling web requests in broadcast environments
On-demand broadcast has been supported in the Internet to enhance system scalability. Unfortunately, most of existing on-demand scheduling algorithms did not consider the time con...
Jianliang Xu, Wang-Chien Lee, Jiangchuan Liu