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» On the Minimal Uncompletable Word Problem
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MOR
2000
90views more  MOR 2000»
13 years 6 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
DAM
1999
90views more  DAM 1999»
13 years 6 months ago
Note on a Helicopter Search Problem on Graphs
We consider a search game on a graph in which one cop in a helicopter flying from vertex to vertex tries to catch the invisible robber. The existence of the winning program for th...
Fedor V. Fomin
FOCM
2011
175views more  FOCM 2011»
13 years 1 months ago
Convergence of Fixed-Point Continuation Algorithms for Matrix Rank Minimization
The matrix rank minimization problem has applications in many fields such as system identification, optimal control, low-dimensional embedding etc. As this problem is NP-hard in ...
Donald Goldfarb, Shiqian Ma
SIAMJO
2000
101views more  SIAMJO 2000»
13 years 6 months ago
An Efficient Algorithm for Minimizing a Sum of p-Norms
We study the problem of minimizing a sum of p-norms where p is a fixed real number in the interval [1, ]. Several practical algorithms have been proposed to solve this problem. How...
Guoliang Xue, Yinyu Ye
SIAMCOMP
2000
88views more  SIAMCOMP 2000»
13 years 6 months ago
On a Conjecture by Coffman, Flatto, and Wright on Stochastic Machine Minimization
We investigate a conjecture stated by Coffman, Flatto, and Wright within the context of a stochastic machine minimization problem with a hard deadline. We prove that the conjecture...
Nah-Oak Song, Demosthenis Teneketzis