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COCOON
2010
Springer
13 years 8 months ago
On Sorting Permutations by Double-Cut-and-Joins
The problem of sorting permutations by double-cut-and-joins (SBD) arises when we perform the double-cut-and-join (DCJ) operations on pairs of unichromosomal genomes without the gen...
Xin Chen
STACS
2007
Springer
14 years 3 months ago
New Approximation Algorithms for Minimum Cycle Bases of Graphs
We consider the problem of computing an approximate minimum cycle basis of an undirected non-negative edge-weighted graph G with m edges and n vertices; the extension to directed ...
Telikepalli Kavitha, Kurt Mehlhorn, Dimitrios Mich...
CORR
2004
Springer
124views Education» more  CORR 2004»
13 years 9 months ago
On the existence of stable models of non-stratified logic programs
In this paper we analyze the relationship between cyclic definitions and consistency in GelfondLifschitz's answer sets semantics (initially defined as `stable model semantics...
Stefania Costantini
ICC
2007
IEEE
14 years 4 months ago
p-Cycle Network Design for Specified Minimum Dual-Failure Restorability
— Dual-failure scenarios are a real possibility in today’s optical networks and it is becoming more and more important for carriers and network operators to consider them when ...
Wei Li, John Doucette, Ming Zuo
ICALP
2007
Springer
14 years 3 months ago
Linear Problem Kernels for NP-Hard Problems on Planar Graphs
Abstract. We develop a generic framework for deriving linear-size problem kernels for NP-hard problems on planar graphs. We demonstrate the usefulness of our framework in several c...
Jiong Guo, Rolf Niedermeier