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CEC
2009
IEEE
15 years 11 months ago
Parallel global optimisation meta-heuristics using an asynchronous island-model
Abstract— We propose an asynchronous island-model algorithm distribution framework and test the popular Differential Evolution algorithm performance when a few processors are ava...
Dario Izzo, Marek Rucinski, Christos Ampatzis
SIGECOM
2000
ACM
132views ECommerce» more  SIGECOM 2000»
15 years 11 months ago
Pricing strategies on the Web: evidence from the online book industry
Using data collected between August 1999 and January 2000, we examine firm-level pricing strategies for 32 online bookstores. The data cover more than 300 books, including New Yor...
Karen Clay, Ramayya Krishnan, Eric Wolff
IJCAI
2007
15 years 8 months ago
Kernel Conjugate Gradient for Fast Kernel Machines
We propose a novel variant of the conjugate gradient algorithm, Kernel Conjugate Gradient (KCG), designed to speed up learning for kernel machines with differentiable loss functio...
Nathan D. Ratliff, J. Andrew Bagnell
BILDMED
2009
125views Algorithms» more  BILDMED 2009»
15 years 7 months ago
Contrast Enhancement with Dual Energy CT for the Assessment of Atherosclerosis
A drawback of the commonly used single source computed tomography systems (CT) is that different materials might show very similar attenuation at any selected radiation energy. How...
Stefan C. Saur, Hatem Alkadhi, Luca Regazzoni, Sim...
SIAMJO
2008
108views more  SIAMJO 2008»
15 years 6 months ago
Sparse SOS Relaxations for Minimizing Functions that are Summations of Small Polynomials
This paper discusses how to find the global minimum of functions that are summations of small polynomials ("small" means involving a small number of variables). Some spa...
Jiawang Nie, James Demmel