25 search results - page 4 / 5 » Approximating the Weight of Shallow Steiner Trees |
131
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NETWORKS
2010
15 years 5 days ago
2010
We consider a probabilistic model for the Steiner Tree problem. Under this model the problem is defined in a 2-stage setting over a first-stage complete weighted graph having it...
115
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SODA
2001
ACM
15 years 3 months ago
2001
ACM
Consider an edge-weighted tree T = (V, E, w : E R+ ), in which a subset R of the nodes (called the required nodes) are colored red and the remaining nodes in S = V \R are colored ...
145
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STOC
2006
ACM
16 years 2 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...
112
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ICALP
2005
Springer
15 years 7 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...
135
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ALGORITHMICA
1998
15 years 1 months ago
1998
The dominatingset problemin graphs asks for a minimumsize subset of vertices with the followingproperty: each vertex is required to either be in the dominating set, or adjacent to...