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» Approximation schemes for the Min-Max Starting Time Problem
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FOCS
1999
IEEE
15 years 4 months ago
A Sublinear Time Approximation Scheme for Clustering in Metric Spaces
The metric 2-clustering problem is de ned as follows: given a metric (X;d), partition X into two sets S1 and S2 in order to minimize the value of X i X fu;vg Si d(u;v) In this pap...
Piotr Indyk
JCO
2011
115views more  JCO 2011»
14 years 6 months ago
Approximation scheme for restricted discrete gate sizing targeting delay minimization
Discrete gate sizing is a critical optimization in VLSI circuit design. Given a set of available gate sizes, discrete gate sizing problem asks to assign a size to each gate such th...
Chen Liao, Shiyan Hu
99
Voted
MOR
2000
90views more  MOR 2000»
14 years 11 months ago
A PTAS for Minimizing the Total Weighted Completion Time on Identical Parallel Machines
We consider the problem of scheduling a set of n jobs on m identical parallel machines so as to minimize the weighted sum of job completion times. This problem is NP-hard in the s...
Martin Skutella, Gerhard J. Woeginger
STOC
2010
ACM
186views Algorithms» more  STOC 2010»
15 years 4 months ago
Faster approximation schemes for fractional multicommodity flow problems via dynamic graph algorithms
We combine the work of Garg and K¨onemann, and Fleischer with ideas from dynamic graph algorithms to obtain faster (1 − ε)-approximation schemes for various versions of the mu...
Aleksander Madry
91
Voted
COR
2007
121views more  COR 2007»
14 years 11 months ago
An approximation scheme for two-machine flowshop scheduling with setup times and an availability constraint
This paper studies the two-machine permutation flowshop scheduling problem with anticipatory setup times and an availability constraint imposed only on the first machine. The obje...
Xiuli Wang, T. C. Edwin Cheng