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ALGORITHMICA
2005
149views more  ALGORITHMICA 2005»
15 years 4 months ago
Approximating Maximum Weight Cycle Covers in Directed Graphs with Weights Zero and One
A cycle cover of a graph is a spanning subgraph each node of which is part of exactly one simple cycle. A k-cycle cover is a cycle cover where each cycle has length at least k. Gi...
Markus Bläser, Bodo Manthey
STOC
2010
ACM
295views Algorithms» more  STOC 2010»
15 years 9 months ago
Approximation Schemes for Steiner Forest on Planar Graphs and Graphs of Bounded Treewidth
We give the first polynomial-time approximation scheme (PTAS) for the Steiner forest problem on planar graphs and, more generally, on graphs of bounded genus. As a first step, w...
MohammadHossein Bateni, MohammadTaghi Hajiaghayi a...
GECCO
2009
Springer
100views Optimization» more  GECCO 2009»
15 years 11 months ago
Partial neighborhoods of elementary landscapes
This paper introduces a new component based model that makes it relatively simple to prove that certain types of landscapes are elementary. We use the model to reconstruct proofs ...
L. Darrell Whitley, Andrew M. Sutton
ICCAD
1994
IEEE
119views Hardware» more  ICCAD 1994»
15 years 8 months ago
Adaptive cut line selection in min-cut placement for large scale sea-of-gates arrays
We present a new min-cut based placement algorithm for large scale sea-of-gates arrays. In the past all such algorithms used a xed cut line sequence that is determined before min...
Kazuhiro Takahashi, Kazuo Nakajima, Masayuki Terai...
SCAM
2003
IEEE
15 years 9 months ago
The Java System Dependence Graph
The Program Dependence Graph was introduced by Ottenstein and Ottenstein in 1984. It was suggested to be a suitable internal program representation for monolithic programs, for th...
Neil Walkinshaw, Marc Roper, Murray Wood