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» Uniform Approximations for Transcendental Functions
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CORR
2010
Springer
109views Education» more  CORR 2010»
13 years 7 months ago
Fast space-variant elliptical filtering using box splines
The efficient realization of linear space-variant (non-convolution) filters is a challenging computational problem in image processing. In this paper, we demonstrate that it is po...
Kunal Narayan Chaudhury, Arrate Muñoz-Barru...
SIAMSC
2008
116views more  SIAMSC 2008»
13 years 7 months ago
A New Asymptotic Preserving Scheme Based on Micro-Macro Formulation for Linear Kinetic Equations in the Diffusion Limit
We propose a new numerical scheme for linear transport equations. It is based on a decomposition of the distribution function into equilibrium and non-equilibrium parts. We also us...
Mohammed Lemou, Luc Mieussens
STOC
2007
ACM
140views Algorithms» more  STOC 2007»
14 years 7 months ago
On the submodularity of influence in social networks
We prove and extend a conjecture of Kempe, Kleinberg, and Tardos (KKT) on the spread of influence in social networks. A social network can be represented by a directed graph where...
Elchanan Mossel, Sébastien Roch
CNSR
2005
IEEE
105views Communications» more  CNSR 2005»
14 years 1 months ago
A New Analytic Approach to Evaluation of Packet Error Rate in Wireless Networks
Bit Error Rate (BER) and Packet Error Rate (PER) are important Quality of Service Parameters for Wireless network. Most of researches in QoS have been devoted to the analysis of B...
Ramin Khalili, Kavé Salamatian
ECCC
2007
86views more  ECCC 2007»
13 years 7 months ago
Testing Halfspaces
This paper addresses the problem of testing whether a Boolean-valued function f is a halfspace, i.e. a function of the form f(x) = sgn(w·x−θ). We consider halfspaces over the ...
Kevin Matulef, Ryan O'Donnell, Ronitt Rubinfeld, R...