Approximation Schemes for Node-Weighted Geometric Steiner Tree Problems
β Scribed by Jan Remy; Angelika Steger
- Publisher
- Springer
- Year
- 2007
- Tongue
- English
- Weight
- 654 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0178-4617
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π SIMILAR VOLUMES
In this paper, we study the Node Weighted Steiner Tree Problem (NSP). This problem is a generalization of the Steiner tree problem in the sense that vertex weights are considered. Given an undirected graph, the problem is to find a tree that spans a subset of the vertices and is such that the total
We design a polynomial-time approximation scheme for the Steiner tree problem in the plane when the given set of regular points is c-local, i.e., in the minimum-cost spanning tree for the given set of regular points, the length of the longest edge is at most c times the length of the shortest edge.