72 search results - page 1 / 15 » Minimum moment Steiner trees |
SODA
2004
ACM
13 years 9 months ago
2004
ACM
For a rectilinear Steiner tree T with a root, define its k-th moment Mk(T) = T (dT (u))k du, where the integration is over all edges of T, dT (u) is the length of the unique path ...
COCOA
2009
Springer
14 years 2 months ago
2009
Springer
Abstract. The node-weighted Steiner tree problem is a variation of classical Steiner minimum tree problem. Given a graph G = (V, E) with node weight function C : V → R+ and a sub...
COCOON
2005
Springer
14 years 1 months ago
2005
Springer
The terminal Steiner tree problem (TST) consists of finding a minimum cost Steiner tree where each terminal is a leaf. We describe a factor 2ρ−ρ/(3ρ−2) approximation algor...
ICPADS
2007
IEEE
14 years 2 months ago
2007
IEEE
Given an undirected graph with weights associated with its edges, the Steiner tree problem consists of finding a minimum weight subtree spanning a given subset of (terminal) nodes...
MFCS
2001
Springer
14 years 8 days ago
2001
Springer
We show that it is not possible to approximate the minimum Steiner tree problem within 1 + 1 162 unless RP = NP. The currently best known lower bound is 1 + 1 400. The reduction i...