10 search results - page 1 / 2 » Kernels for Feedback Arc Set In Tournaments |
CIAC
2006
Springer
13 years 8 months ago
2006
Springer
Complementing recent progress on classical complexity and polynomial-time approximability of feedback set problems in (bipartite) tournaments, we extend and partially improve fixed...
FSTTCS
2009
Springer
13 years 11 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...
TAMC
2009
Springer
2009
Springer
Linear Programming Based Approximation Algorithms for Feedback Set Problems in Bipartite Tournaments
13 years 11 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...
AAAI
2010
13 years 6 months ago
2010
We present a fast local search algorithm that finds an improved solution (if there is any) in the k-exchange neighborhood of the given solution to an instance of WEIGHTED FEEDBACK...
ECCC
2006
13 years 4 months ago
2006
Suppose you ran a chess tournament, everybody played everybody, and you wanted to use the results to rank everybody. Unless you were really lucky, the results would not be acyclic...