19 search results - page 4 / 4 » A quasi-polynomial time approximation scheme for minimum wei... |
STOC
2006
ACM
14 years 5 months ago
2006
ACM
Let > 0 be a constant. For any edge-weighted planar graph G and a subset S of nodes of G, there is a subgraph H of G of weight a constant times that of the minimum Steiner tree...
FOCS
2009
IEEE
14 years 9 days ago
2009
IEEE
— We show that for every fixed k, there is a linear time algorithm that decides whether or not a given graph has a vertex set X of order at most k such that G − X is planar (w...
AINA
2005
IEEE
13 years 11 months ago
2005
IEEE
A core-based group-shared multicast tree is a shortest path tree rooted at core node that distributes packets to and from all group members. Traditionally, the bandwidth cost cons...
ICALP
2005
Springer
13 years 11 months ago
2005
Springer
Virtual Private Network Design is the following NP-hard problem. We are given a communication network, represented as a weighted graph with thresholds on the nodes which represent...