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COLOGNETWENTE
2007
15 years 2 months ago
Approximating minimum independent dominating sets in wireless networks
We present the first polynomial-time approximation scheme (PTAS) for the Minimum Independent Dominating Set problem in graphs of polynomially bounded growth. Graphs of bounded gr...
Johann Hurink, Tim Nieberg
UAI
2001
15 years 2 months ago
Vector-space Analysis of Belief-state Approximation for POMDPs
We propose a new approach to value-directed belief state approximationfor POMDPs. The valuedirected model allows one to choose approximation methods for belief state monitoringtha...
Pascal Poupart, Craig Boutilier
FOCS
2008
IEEE
15 years 1 months ago
Approximation Algorithms for Single-minded Envy-free Profit-maximization Problems with Limited Supply
We present the first polynomial-time approximation algorithms for single-minded envy-free profit-maximization problems [13] with limited supply. Our algorithms return a pricing sc...
Maurice Cheung, Chaitanya Swamy
IOR
2007
58views more  IOR 2007»
15 years 28 days ago
Bounds, Heuristics, and Approximations for Distribution Systems
This paper develops simple approximate methods to analyze a two-stage stochastic distribution system consisting of one warehouse and multiple retailers. We consider local and cent...
Guillermo Gallego, Özalp Özer, Paul H. Z...
NA
2011
296views Computer Vision» more  NA 2011»
14 years 8 months ago
Rational approximation to the Fermi-Dirac function with applications in density functional theory
We are interested in computing the Fermi-Dirac matrix function in which the matrix argument is the Hamiltonian matrix arising from Density Function Theory (DFT) applications. More...
Roger B. Sidje, Yousef Saad