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ISAAC
2004
Springer
141views Algorithms» more  ISAAC 2004»
15 years 11 months ago
Weighted Coloring on Planar, Bipartite and Split Graphs: Complexity and Improved Approximation
We study complexity and approximation of min weighted node coloring in planar, bipartite and split graphs. We show that this problem is NP-complete in planar graphs, even if they a...
Jérôme Monnot, Vangelis Th. Paschos, ...
CP
2009
Springer
16 years 6 months ago
Approximating Weighted Max-SAT Problems by Compensating for Relaxations
We introduce a new approach to approximating weighted Max-SAT problems that is based on simplifying a given instance, and then tightening the approximation. First, we relax its str...
Arthur Choi, Trevor Standley, Adnan Darwiche
ISAAC
2003
Springer
117views Algorithms» more  ISAAC 2003»
15 years 10 months ago
Approximate Regular Expression Searching with Arbitrary Integer Weights
Abstract. We present a bit-parallel technique to search a text of length n for a regular expression of m symbols permitting k differences in worst case time O(mn/ logk s), where s...
Gonzalo Navarro
157
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APPROX
2008
Springer
137views Algorithms» more  APPROX 2008»
15 years 7 months ago
Approximating Directed Weighted-Degree Constrained Networks
Given a graph H = (V, F) with edge weights {w(e) : e F}, the weighted degree of a node v in H is {w(vu) : vu F}. We give bicriteria approximation algorithms for problems that see...
Zeev Nutov
AICT
2005
IEEE
194views Communications» more  AICT 2005»
15 years 11 months ago
Approximations to Maximum Weight Matching Scheduling Algorithms of Low Complexity
The choice of the scheduling algorithm is a major design criteria of a switch. Whereas it is known that maximum weight matching algorithms guarantee the stability of an input queu...
Claus Bauer