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ICALP
2009
Springer
14 years 6 months ago
Node-Weighted Steiner Tree and Group Steiner Tree in Planar Graphs
We improve the approximation ratios for two optimization problems in planar graphs. For node-weighted Steiner tree, a classical network-optimization problem, the best achievable ap...
Erik D. Demaine, MohammadTaghi Hajiaghayi, Philip ...
DAC
2006
ACM
14 years 6 months ago
Timing-driven Steiner trees are (practically) free
Traditionally, rectilinear Steiner minimum trees (RSMT) are widely used for routing estimation in design optimizations like floorplanning and physical synthesis. Since it optimize...
Charles J. Alpert, Andrew B. Kahng, Cliff C. N. Sz...
ICCAD
1999
IEEE
181views Hardware» more  ICCAD 1999»
13 years 10 months ago
A new heuristic for rectilinear Steiner trees
The minimum rectilinear Steiner tree (RST) problem is one of the fundamental problems in the field of electronic design automation. The problem is NP-hard, and much work has been ...
Ion I. Mandoiu, Vijay V. Vazirani, Joseph L. Ganle...
ASPDAC
2005
ACM
158views Hardware» more  ASPDAC 2005»
13 years 7 months ago
The polygonal contraction heuristic for rectilinear Steiner tree construction
— Motivated by VLSI/ULSI routing applications, we present a heuristic for rectilinear Steiner minimal tree (RSMT) construction. We transform a rectilinear minimum spanning tree (...
Yin Wang, Xianlong Hong, Tong Jing, Yang Yang, Xia...
TVLSI
2002
82views more  TVLSI 2002»
13 years 5 months ago
Probability-based approach to rectilinear Steiner tree problems
Abstract--The rectilinear Steiner tree (RST) problem is of essential importance to the automatic interconnect optimization for VLSI design. In this paper, we present a class of pro...
Chunhong Chen, Jiang Zhao, Majid Ahmadi