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Re: Effect of initial point on results when using Isqcurvefit function
Posted:
Aug 6, 2013 8:42 AM


On 8/6/2013 5:48 AM, lokesh wrote: > I am using Isqcurvefit function in matlab. Whenever I change initial > value that I pass to the solver, my final result is changing(i.e. > constant parameters in resulting function). How to solve this problem?
Perhaps your problem has many local minima. http://www.mathworks.com/help/optim/ug/whenthesolversucceeds.html#brhkghv65
Or perhaps your problem is extremely sensitive. You can try adjusting some tolerances, such as TolX and TolFun. http://www.mathworks.com/help/optim/ug/tolerancesandstoppingcriteria.html
Or perhaps your problem is not formulated correctly. It is hard to know.
Alan Weiss MATLAB mathematical toolbox documentation



