67 search results - page 7 / 14 » A polynomial-time approximation algorithm for the number of ... |
STACS
2007
Springer
14 years 2 months ago
2007
Springer
We consider the problem of computing an approximate minimum cycle basis of an undirected non-negative edge-weighted graph G with m edges and n vertices; the extension to directed ...
MFCS
2007
Springer
14 years 2 months ago
2007
Springer
Consider a rooted directed acyclic graph G = (V, E) with root r, representing a collection V of web pages connected via a set E of hyperlinks. Each node v is associated with the pr...
ICALP
2011
Springer
13 years 1 days ago
2011
Springer
We consider the following Tree-Constrained Bipartite Matching problem: Given two rooted trees T1 = (V1, E1), T2 = (V2, E2) and a weight function w : V1 × V2 → R+, find a maximu...
ICALP
2010
Springer
14 years 1 months ago
2010
Springer
Computing a minimum vertex cover in graphs and hypergraphs is a well-studied optimizaton problem. While intractable in general, it is well known that on bipartite graphs, vertex c...
CORR
2007
Springer
13 years 8 months ago
2007
Springer
Orienteering is the following optimization problem: given an edge-weighted graph (directed or undirected), two nodes s, t and a time limit T, find an s-t walk of total length at ...