Journal of Systems Engineering and Electronics ›› 2009, Vol. 31 ›› Issue (4): 988-993.

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Method of searching Weibull shape parameter under MLE based on united PSO

LUO Hang, LONG Bing, HUANG Jian-guo, WANG Hou-jun   

  1. Coll. of Automation Engineering, Univ. of Electronic Science and Technology of China, Chengdu 610054, China
  • Received:2007-11-13 Revised:2008-06-06 Online:2009-04-20 Published:2010-01-03

Abstract: A method named particle swarm optimization(PSO) is firstly used for estimating the Weibull shape parameter,which is based on maximum likelihood estimation(MLE) about two-parameter Weibull distribution.The method of linear regression based on least-square estimation(LSE) is combined with PSO,then a kind of united optimization method is presented and corresponding comments are given.Simulation and actual application show that the presented united optimization method used for searching the shape parameter of Weibull distribution based on the method of MLE has good characteristics,namely,the searching is correct,robust and quick.

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