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Re: Optimization using fmincon & simulated annealing and its error
Posted:
Dec 8, 2010 12:20 PM


Thanks Alan for your response.Actually there are 4 variables but in fmincon it asks for initial value to start but I do not know the starting value at all say for example iI give the starting value as [1.9,501,44,201].It returns the same value as the result.Is there any method through which I can find the starting value for the objective function I gave?I simply can't guess the value.Another problem is that this problem of getting the initial value is repeated in simulated annealing method also what ever the initial value I give I get the same answer as result but Genetic Algorithm gives entirely a different answer..now actually I've modified the objective function as:
f=(11/1+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(3.1180.00215*a(2))))+(0.5*(1/(1+exp(3.230.00117*a(2)))))))+(4.73*(11/(1+exp(9.540.134*a(3)))))+(3.7*(11/(1+exp(1.017+0.00558*a(4)))))));
for this function only the above stated error of getting the initial value in result occurs.. Thanks



