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» New Lower Bounds for Heilbronn Numbers
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SIROCCO
2007
14 years 11 months ago
Location Oblivious Distributed Unit Disk Graph Coloring
We present the first location oblivious distributed unit disk graph coloring algorithm having a provable performance ratio of three (i.e. the number of colors used by the algorit...
Mathieu Couture, Michel Barbeau, Prosenjit Bose, P...
UAI
2004
14 years 11 months ago
Discretized Approximations for POMDP with Average Cost
In this paper, we propose a new lower approximation scheme for POMDP with discounted and average cost criterion. The approximating functions are determined by their values at a fi...
Huizhen Yu, Dimitri P. Bertsekas
DCG
2007
91views more  DCG 2007»
14 years 9 months ago
Which n-Venn Diagrams Can Be Drawn with Convex k-Gons?
We establish a new lower bound for the number of sides required for the component curves of simple Venn diagrams made from polygons. Specifically, for any n-Venn diagram of conve...
Jeremy Carroll, Frank Ruskey, Mark Weston
ALGORITHMICA
2010
143views more  ALGORITHMICA 2010»
14 years 9 months ago
Absolute and Asymptotic Bounds for Online Frequency Allocation in Cellular Networks
Given a cellular (mobile telephone) network, whose geographical coverage area is divided into hexagonal cells, phone calls are serviced by assigning frequencies to them so that no...
Joseph Wun-Tat Chan, Francis Y. L. Chin, Deshi Ye,...
CVPR
2007
IEEE
15 years 11 months ago
Solving Large Scale Binary Quadratic Problems: Spectral Methods vs. Semidefinite Programming
In this paper we introduce two new methods for solving binary quadratic problems. While spectral relaxation methods have been the workhorse subroutine for a wide variety of comput...
Carl Olsson, Anders P. Eriksson, Fredrik Kahl