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IPCO
1998
99views Optimization» more  IPCO 1998»
13 years 9 months ago
Non-approximability Results for Scheduling Problems with Minsum Criteria
We provide several non-approximability results for deterministic scheduling problems whose objective is to minimize the total job completion time. Unless P = NP, none of the probl...
Han Hoogeveen, Petra Schuurman, Gerhard J. Woeging...
CORR
2008
Springer
74views Education» more  CORR 2008»
13 years 7 months ago
Analysis of the Karmarkar-Karp Differencing Algorithm
The Karmarkar-Karp differencing algorithm is the best known polynomial time heuristic for the number partitioning problem, fundamental in both theoretical computer science and stat...
Stefan Boettcher, Stephan Mertens
STOC
2010
ACM
168views Algorithms» more  STOC 2010»
14 years 5 months ago
Non-commutative circuits and the sum-of-squares problem
We initiate a direction for proving lower bounds on the size of non-commutative arithmetic circuits. This direction is based on a connection between lower bounds on the size of no...
Pavel Hrubes, Avi Wigderson and Amir Yehudayoff
MOR
2002
94views more  MOR 2002»
13 years 7 months ago
The Complexity of Generic Primal Algorithms for Solving General Integer Programs
ngly better objective function value until an optimal solution is reached. From an abstract point of view, an augmentation problem is solved in each iteration. That is, given a fea...
Andreas S. Schulz, Robert Weismantel
DATE
2007
IEEE
106views Hardware» more  DATE 2007»
14 years 2 months ago
Design closure driven delay relaxation based on convex cost network flow
Design closure becomes hard to achieve at physical layout stage due to the emergence of long global interconnects. Consequently, interconnect planning needs to be integrated in hi...
Chuan Lin, Aiguo Xie, Hai Zhou