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APPROX
2009
Springer
125views Algorithms» more  APPROX 2009»
14 years 2 months ago
Minimizing Average Shortest Path Distances via Shortcut Edge Addition
We consider adding k shortcut edges (i.e. edges of small fixed length δ ≥ 0) to a graph so as to minimize the weighted average shortest path distance over all pairs of vertices...
Adam Meyerson, Brian Tagiku
ESA
2009
Springer
130views Algorithms» more  ESA 2009»
14 years 2 months ago
On the Performance of Approximate Equilibria in Congestion Games
We study the performance of approximate Nash equilibria for congestion games with polynomial latency functions. We consider how much the price of anarchy worsens and how much the ...
George Christodoulou, Elias Koutsoupias, Paul G. S...
COCOA
2007
Springer
14 years 1 months ago
A Lagrangian Relaxation Approach for the Multiple Sequence Alignment Problem
Abstract. We present a branch-and-bound (bb) algorithm for the multiple sequence alignment problem (MSA), one of the most important problems in computational biology. The upper bou...
Ernst Althaus, Stefan Canzar
DISOPT
2008
107views more  DISOPT 2008»
13 years 7 months ago
The k-path tree matroid and its applications to survivable network design
We define the k-path tree matroid, and use it to solve network design problems in which the required connectivity is arbitrary for a given pair of nodes, and 1 for the other pairs...
Esther M. Arkin, Refael Hassin
JCB
2007
99views more  JCB 2007»
13 years 7 months ago
Duplication and Inversion History of a Tandemly Repeated Genes Family
Given a phylogenetic tree for a family of tandemly repeated genes and their signed order on the chromosome, we aim to find the minimum number of inversions compatible with an evo...
Mathieu Lajoie, Denis Bertrand, Nadia El-Mabrouk, ...