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» New primal-dual algorithms for Steiner tree problems
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STOC
2003
ACM
171views Algorithms» more  STOC 2003»
14 years 9 months ago
Primal-dual meets local search: approximating MST's with nonuniform degree bounds
We present a new bicriteria approximation algorithm for the degree-bounded minimum-cost spanning tree problem: Given an undirected graph with nonnegative edge weights and degree b...
Jochen Könemann, R. Ravi
ICWS
2010
IEEE
13 years 10 months ago
Highly Scalable Web Service Composition Using Binary Tree-Based Parallelization
Data intensive applications, e.g. in life sciences, pose new efficiency challenges to the service composition problem. Since today computing power is mainly increased by multiplica...
Patrick Hennig, Wolf-Tilo Balke
SIROCCO
2004
13 years 10 months ago
Path Layout on Tree Networks: Bounds in Different Label Switching Models
Path Layout is a fundamental graph problem in label switching protocols. This problem is raised in various protocols such as the traditional ATM protocol and MPLS which is a new l...
Anat Bremler-Barr, Leah Epstein
CVPR
2010
IEEE
14 years 5 months ago
Beyond Trees: MRF Inference via Outer-Planar Decomposition
Maximum a posteriori (MAP) inference in Markov Random Fields (MRFs) is an NP-hard problem, and thus research has focussed on either finding efficiently solvable subclasses (e.g. t...
Dhruv Batra, Andrew Gallagher, Devi Parikh, Tsuhan...
COMPGEOM
2009
ACM
14 years 3 months ago
Proximity of persistence modules and their diagrams
Topological persistence has proven to be a key concept for the study of real-valued functions defined over topological spaces. Its validity relies on the fundamental property tha...
Frédéric Chazal, David Cohen-Steiner...