About Using the MATLAB built-in function in fitting process
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Hello, I'm using custom equations in fitting my data. The problem is that these equations contain one or more MATLAB built-in functions (e.g., expint, lambertw,..) and it takes so long (about 20 minutes) to converge. Is there any way so that I can decrease the accuracy of these built-in functions so that the convergence become faster? Or any idea to accelerate the fitting process?
Thanks.
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Walter Roberson
le 20 Déc 2015
expint() is available both numerically and in the Symbolic Toolbox. lambertw is available only in the symbolic toolbox, but a numeric version of it is available in the File Exchange
If you need to use the symbolic toolbox then you can decrease computation time by setting Digits to lower.
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