14 search results - page 1 / 3 » An O(log n log log n)-approximation Algorithm for the Asymm... |
WADS
2007
Springer
13 years 10 months ago
2007
Springer
In this paper, we give a O(log copt)-approximation algorithm for the point guard problem where copt is the optimal number of guards. Our algorithm runs in time polynomial in n, the...
SODA
2010
ACM
13 years 2 months ago
2010
ACM
We consider the Asymmetric Traveling Salesman problem for costs satisfying the triangle inequality. We derive a randomized algorithm which delivers a solution within a factor O(lo...
SODA
2010
ACM
14 years 1 months ago
2010
ACM
We consider the Asymmetric Traveling Salesman problem for costs satisfying the triangle inequality. We derive a randomized algorithm which delivers a solution within a factor O(lo...
SODA
2010
ACM
14 years 1 months ago
2010
ACM
We study integrality gaps and approximability of two closely related problems on directed graphs. Given a set V of n nodes in an underlying asymmetric metric and two specified nod...
APPROX
2010
Springer
13 years 6 months ago
2010
Springer
We consider two natural generalizations of the Asymmetric Traveling Salesman problem: the k-Stroll and the k-Tour problems. The input to the k-Stroll problem is a directed n-verte...