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INFOCOM
2012
IEEE
13 years 7 days ago
Combinatorial auction with time-frequency flexibility in cognitive radio networks
—In this paper, we tackle the spectrum allocation problem in cognitive radio (CR) networks with time-frequency flexibility consideration using combinatorial auction. Different f...
Mo Dong, Gaofei Sun, Xinbing Wang, Qian Zhang
IPL
2008
172views more  IPL 2008»
14 years 9 months ago
Approximation algorithms for restricted Bayesian network structures
Bayesian Network structures with a maximum in-degree of k can be approximated with respect to a positive scoring metric up to an factor of 1/k. Key words: approximation algorithm,...
Valentin Ziegler
COLOGNETWENTE
2008
14 years 11 months ago
A Simple 3-Approximation of Minimum Manhattan Networks
Given a set P of n points in the plane, a Manhattan network of P is a network that contains a rectilinear shortest path between every pair of points of P. A minimum Manhattan netw...
Bernhard Fuchs, Anna Schulze
ISIPTA
2005
IEEE
168views Mathematics» more  ISIPTA 2005»
15 years 3 months ago
Approximate Inference in Credal Networks by Variational Mean Field Methods
Graph-theoretical representations for sets of probability measures (credal networks) generally display high complexity, and approximate inference seems to be a natural solution fo...
Jaime Shinsuke Ide, Fabio Gagliardi Cozman
BROADNETS
2005
IEEE
15 years 3 months ago
Sociological orbit aware location approximation and routing in MANET
Joy Ghosh, Sumesh J. Philip, Chunming Qiao