TAMC
2009
Springer
2009
Springer
Linear Programming Based Approximation Algorithms for Feedback Set Problems in Bipartite Tournaments
14 years 5 months ago
We consider the feedback vertex set and feedback arc set problems in bipartite tournaments. We improve on recent results by giving a 2-approximation algorithm for the feedback vert...
FSTTCS
2009
Springer
14 years 5 months ago
2009
Springer
A tournament T = (V, A) is a directed graph in which there is exactly one arc between every pair of distinct vertices. Given a digraph on n vertices and an integer parameter k, th...
AAIM
2009
Springer
14 years 5 months ago
2009
Springer
Abstract. In an implicit combinatorial optimization problem, the constraints are not enumerated explicitly but rather stated implicitly through equations, other constraints or auxi...