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FCT
1999
Springer
15 years 1 months ago
A Polynomial Time Approximation Scheme for Dense MIN 2SAT
Abstract. It is proved that everywhere-dense Min 2SAT and everywheredense Min Eq both have polynomial time approximation schemes.
Cristina Bazgan, Wenceslas Fernandez de la Vega
COCOON
2005
Springer
15 years 3 months ago
A PTAS for a Disc Covering Problem Using Width-Bounded Separators
In this paper, we study the following disc covering problem: Given a set of discs of various radii on the plane, find a subset of discs to maximize the area covered by exactly on...
Zhixiang Chen, Bin Fu, Yong Tang, Binhai Zhu
EOR
2002
79views more  EOR 2002»
14 years 9 months ago
Fast fully polynomial approximation schemes for minimizing completion time variance
Abstract. We present fully polynomial approximation schemes for the problem of minimizing completion time variance of a set of n jobs on a single machine. The fastest of these sche...
Wieslaw Kubiak, Jinliang Cheng, Mikhail Y. Kovalyo...
75
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IPL
2006
70views more  IPL 2006»
14 years 9 months ago
A polynomial time approximation scheme for embedding a directed hypergraph on a ring
We study the problem of embedding a directed hypergraph on a ring that has applications in optical network communications. The undirected version (MCHEC) has been extensively stud...
Kang Li, Lusheng Wang
COCOA
2008
Springer
14 years 11 months ago
Polynomial Time Approximation Scheme for Connected Vertex Cover in Unit Disk Graph
Connected Vertex Cover Problem (CVC) is an NP-hard problem. The currently best known approximation algorithm for CVC has performance ration 2. This paper gives the first Polynomial...
Zhao Zhang, Xiaofeng Gao, Weili Wu