447 search results - page 25 / 90 » Approximation Algorithms for Directed Steiner Problems |
121
click to vote
WADS
2005
Springer
15 years 6 months ago
2005
Springer
We consider an APX-hard variant (∆-Max-ATSP) and an APX-hard relaxation (Max-3-DCC) of the classical traveling salesman problem. We present a 31 40-approximation algorithm for â...
CIAC
2006
Springer
15 years 5 months ago
2006
Springer
Consider a truck running along a road. It picks up a load Li at point i and delivers it at i, carrying at most one load at a time. The speed on the various parts of the road in on...
112
click to vote
ALGORITHMICA
2005
15 years 1 months ago
2005
A cycle cover of a graph is a spanning subgraph each node of which is part of exactly one simple cycle. A k-cycle cover is a cycle cover where each cycle has length at least k. Gi...
106
click to vote
APPROX
2008
Springer
15 years 3 months ago
2008
Springer
Given a graph H = (V, F) with edge weights {w(e) : e F}, the weighted degree of a node v in H is {w(vu) : vu F}. We give bicriteria approximation algorithms for problems that see...
138
click to vote
FSTTCS
2001
Springer
15 years 5 months ago
2001
Springer
Consider a directed graph G = (V, E) with n vertices and a root vertex r ∈ V . The DMDST problem for G is one of constructing a spanning tree rooted at r, whose maximal degree is...