138 search results - page 7 / 28 » Approximation Algorithms for Bounded Degree Phylogenetic Roo... |
ALGORITHMICA
2004
13 years 7 months ago
2004
We consider the Chromatic Sum Problem on bipartite graphs which appears to be much harder than the classical Chromatic Number Problem. We prove that the Chromatic Sum Problem is NP...
STACS
2010
Springer
14 years 2 months ago
2010
Springer
We study the problem of recognizing graph powers and computing roots of graphs. We provide a polynomial time recognition algorithm for r-th powers of graphs of girth at least 2r + ...
CIAC
1997
Springer
13 years 11 months ago
1997
Springer
In this paper, we study the Graph Isomorphism problem on graphs of bounded treewidth, bounded degree or bounded bandwidth. Graph Isomorphism can be solved in polynomial time for g...
CAGD
2007
13 years 7 months ago
2007
We present an algorithm which is able to compute all roots of a given univariate polynomial within a given interval. In each step, we use degree reduction to generate a strip boun...
APPROX
2008
Springer
13 years 9 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...