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《Acta Agronomica Sinica》 1998-05
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The Optimal Fitting of the Nonlinear Equation with Contraction-Expansion Algorithm

Gu Shiliang Hui Dafeng Mo Huidong (Lab. of Quantitative Genetics, Agricultural College, Yangzhou University, Yangzhou, 225009)  
The paper developed a new method, Contraction-Expansion Algorithm, which can optimize the fitting of the nonlinear equation. The algorithm is formed with a number of cir cles, each with contraction and expansion two stages, so it is called C-E algorithm. C-E algo rithm searches for the parametric points of better objective function in and around initial area, and it optimizes searching process through adjusting the central point and step length by the feed back information. With several circles, it can reach global optimal fitting under any initials. This algorithm has the simplicity of free of derivatives of the equation. C-E algorithm can also be used in other objective optimization problems.
【CateGory Index】: S111
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