83 search results - page 3 / 17 » An Improved Exact Algorithm for Cubic Graph TSP |
APPROX
2004
Springer
13 years 10 months ago
2004
Springer
ABSTRACT: Let G(n, c/n) and Gr(n) be an n-node sparse random graph and a sparse random rregular graph, respectively, and let I(n, r) and I(n, c) be the sizes of the largest indepen...
COMBINATORICS
1998
13 years 5 months ago
1998
The aim of this paper is to give a coherent account of the problem of constructing cubic graphs with large girth. There is a well-defined integer µ0(g), the smallest number of v...
SODA
2008
ACM
13 years 6 months ago
2008
ACM
In this paper we consider the orienteering problem in undirected and directed graphs and obtain improved approximation algorithms. The point to point-orienteering-problem is the f...
ICTCS
2005
Springer
13 years 10 months ago
2005
Springer
Abstract. We study efficient exact algorithms for several problems including Vertex Bipartization, Feedback Vertex Set, 3-Hitting Set, Max Cut in graphs with maximum degree at most...
ESA
2003
Springer
13 years 10 months ago
2003
Springer
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...