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» Approximating the maximum quadratic assignment problem
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VLSI
2010
Springer
13 years 7 months ago
Fine-grained post placement voltage assignment considering level shifter overhead
—Multi-Vdd techniques enable application of lower supply voltage levels on cells with timing slacks. New voltage assignment, placement and voltage island partitioning methods are...
Zohreh Karimi, Majid Sarrafzadeh
INFORMATICALT
2010
88views more  INFORMATICALT 2010»
13 years 7 months ago
Inapproximability Results for Wavelength Assignment in WDM Optical Networks
We address the issue of inapproximability of the wavelength assignment problem in wavelength division multiplexing (WDM) optical networks. We prove that in an n-node WDM optical ne...
Keqin Li
CSR
2007
Springer
14 years 2 months ago
Ruling Out Polynomial-Time Approximation Schemes for Hard Constraint Satisfaction Problems
The maximum constraint satisfaction problem (Max CSP) is the following computational problem: an instance is a finite collection of constraints on a set of variables, and the goal...
Peter Jonsson, Andrei A. Krokhin, Fredrik Kuivinen
JCO
2006
126views more  JCO 2006»
13 years 8 months ago
Minimum power assignment in wireless ad hoc networks with spanner property
Power assignment for wireless ad hoc networks is to assign a power for each wireless node such that the induced communication graph has some required properties. Recently research ...
Yu Wang 0003, Xiang-Yang Li
MST
2010
140views more  MST 2010»
13 years 7 months ago
Approximability of Clausal Constraints
We study a family of problems, called Maximum Solution (Max Sol), where the objective is to maximise a linear goal function over the feasible integer assignments to a set of variab...
Peter Jonsson, Gustav Nordh