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» The Polymatroid Steiner Problems
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FOCS
2009
IEEE
15 years 7 months ago
Approximation Algorithms for Multicommodity-Type Problems with Guarantees Independent of the Graph Size
— Linial, London and Rabinovich [16] and Aumann and Rabani [3] proved that the min-cut max-flow ratio for general maximum concurrent flow problems (when there are k commodities...
Ankur Moitra
88
Voted
ICCAD
2007
IEEE
140views Hardware» more  ICCAD 2007»
15 years 9 months ago
Thermal-aware Steiner routing for 3D stacked ICs
— In this paper, we present the first work on the Steiner routing for 3D stacked ICs. In the 3D Steiner routing problem, the pins are located in multiple device layers, which ma...
Mohit Pathak, Sung Kyu Lim
ICCAD
2010
IEEE
229views Hardware» more  ICCAD 2010»
14 years 10 months ago
Obstacle-avoiding rectilinear Steiner minimum tree construction: An optimal approach
In this paper, we present an efficient method to solve the obstacle-avoiding rectilinear Steiner minimum tree (OARSMT) problem optimally. Our work is a major improvement over the w...
Tao Huang, Evangeline F. Y. Young
ESA
2003
Springer
189views Algorithms» more  ESA 2003»
15 years 6 months ago
On the Complexity of Approximating TSP with Neighborhoods and Related Problems
We prove that various geometric covering problems, related to the Travelling Salesman Problem cannot be efficiently approximated to within any constant factor unless P = NP. This ...
Shmuel Safra, Oded Schwartz
172
Voted
COR
2011
14 years 7 months ago
MIP models for connected facility location: A theoretical and computational study
This article comprises the first theoretical and computational study on mixed integer programming (MIP) models for the connected facility location problem (ConFL). ConFL combines...
Stefan Gollowitzer, Ivana Ljubic