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» Approximate Integer Common Divisors
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DAM
2010
120views more  DAM 2010»
13 years 7 months ago
A new approximation algorithm for the multilevel facility location problem
In this paper we propose a new integer programming formulation for the multilevel facility location problem and a novel 3-approximation algorithm based on LP rounding. The linear ...
Adriana Felicia Gabor, Jan-Kees C. W. van Ommeren
SIAMCOMP
2008
107views more  SIAMCOMP 2008»
13 years 6 months ago
Holographic Algorithms
Leslie Valiant recently proposed a theory of holographic algorithms. These novel algorithms achieve exponential speed-ups for certain computational problems compared to naive algo...
Leslie G. Valiant
WSCG
2003
136views more  WSCG 2003»
13 years 8 months ago
Piecewise Circular Approximation of Spirals and Polar Polynomials
Spirals are surprisingly common in science, nature, physics, astronomy, flora and fauna, and the arts. In Cartesian coordinates they are typically transcendental functions, which ...
Francesca Taponecco, Marc Alexa
CORR
2010
Springer
149views Education» more  CORR 2010»
13 years 3 months ago
Constructions of Optical Queues With a Limited Number of Recirculations--Part II: Optimal Constructions
One of the main problems in all-optical packet-switched networks is the lack of optical buffers, and one feasible technology for the constructions of optical buffers is to use opt...
Xuan-Chao Huang, Jay Cheng
ISAAC
2009
Springer
127views Algorithms» more  ISAAC 2009»
14 years 1 months ago
Maximal Strip Recovery Problem with Gaps: Hardness and Approximation Algorithms
Abstract. Given two comparative maps, that is two sequences of markers each representing a genome, the Maximal Strip Recovery problem (MSR) asks to extract a largest sequence of ma...
Laurent Bulteau, Guillaume Fertin, Irena Rusu