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ESA
2004
Springer
125views Algorithms» more  ESA 2004»
15 years 3 months ago
Approximation Algorithms for Quickest Spanning Tree Problems
Let G = (V, E) be an undirected multi-graph with a special vertex root ∈ V , and where each edge e ∈ E is endowed with a length l(e) ≥ 0 and a capacity c(e) > 0. For a pa...
Refael Hassin, Asaf Levin
CGF
2010
120views more  CGF 2010»
14 years 9 months ago
Polygonal mesh watermarking using Laplacian coordinates
We propose a watermarking algorithm for polygonal meshes based on the modification of the Laplacian coordinates. More specifically, we first compute the Laplacian coordinates (x,y...
Ying Yang, Ioannis P. Ivrissimtzis
DAM
2007
78views more  DAM 2007»
14 years 9 months ago
Flow trees for vertex-capacitated networks
Given a graph G = (V, E) with a cost function c(S) ≥ 0 ∀S ⊆ V , we want to represent all possible min-cut values between pairs of vertices i and j. We consider also the spec...
Refael Hassin, Asaf Levin
SODA
2004
ACM
144views Algorithms» more  SODA 2004»
14 years 11 months ago
Covering minimum spanning trees of random subgraphs
We consider the problem of finding a sparse set of edges containing the minimum spanning tree (MST) of a random subgraph of G with high probability. The two random models that we ...
Michel X. Goemans, Jan Vondrák
DCG
2002
66views more  DCG 2002»
14 years 9 months ago
Generation of Oriented Matroids - A Graph Theoretical Approach
We discuss methods for the generation of oriented matroids and of isomorphism classes of oriented matroids. Our methods are based on single element extensions and graph theoretica...
Lukas Finschi, Komei Fukuda