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» Minimum Spanning Tree Problem with Label Selection
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STOC
2010
ACM
261views Algorithms» more  STOC 2010»
14 years 11 days ago
An Improved LP-based Approximation for Steiner Tree
The Steiner tree problem is one of the most fundamental ÆÈ-hard problems: given a weighted undirected graph and a subset of terminal nodes, find a minimum weight tree spanning ...
Jaroslaw Byrka, Fabrizio Grandoni, Thomas Rothvoss...
ICIP
1999
IEEE
14 years 9 months ago
A Toolbox for Interactive Segmentation Based on Nested Partitions
This paper presents a toolbox for interactive image segmentation based on a series of nested partitions of increasing coarseness. The user can navigate among the different resolut...
M. Francisca Zanoguera, Beatriz Marcotegui, Fernan...
WWW
2007
ACM
14 years 8 months ago
A link classification based approach to website topic hierarchy generation
Hierarchical models are commonly used to organize a Website's content. A Website's content structure can be represented by a topic hierarchy, a directed tree rooted at a...
Nan Liu, Christopher C. Yang
CORR
2007
Springer
86views Education» more  CORR 2007»
13 years 7 months ago
On the Discovery of Random Trees
Abstract. We consider in this paper the problem of discovering, via a traceroute algorithm, the topology of a network, whose graph is spanned by an infinite branching process. A s...
Fabrice Guillemin, Philippe Robert
DAM
2008
108views more  DAM 2008»
13 years 7 months ago
On the complexity of the multicut problem in bounded tree-width graphs and digraphs
Given an edge- or vertex-weighted graph or digraph and a list of source-sink pairs, the minimum multicut problem consists in selecting a minimum weight set of edges or vertices wh...
Cédric Bentz