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Topic: Global Optimization in 2010-plz Help Important
Replies: 1   Last Post: Feb 14, 2011 9:10 AM

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Joe Ajay

Posts: 18
Registered: 10/30/10
Global Optimization in 2010-plz Help Important
Posted: Feb 13, 2011 9:41 PM
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Hi I got an objective function for which i have to find the optimum value but the solvers asks starting point which I do not know. The bounds are [-2,200,43,500] & [2,1200,78,1800] I cannot give so much of combinations of starting value Plz help me in this...my objective function is:
f=(1/1+exp(-15.02+(6.09*(1-(100-(95*exp((-0.03353*a(1)*a(1)*a(1)*a(1))-(0.2179*a(1)*a(1)))/100))))+(4.88*(1-(0.5*(1/1+exp(3.118-0.00215*a(2))))+(0.5*(1/(1+exp(3.23-0.00117*a(2)))))))+(4.73*(1-1/(1+exp(9.54-0.134*a(3)))))+(3.7*(1-1/(1+exp(-1.017+0.00558*a(4)))))));



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