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Tagged with mathematica fitting
3 questions
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Why fitting does not find the true best point
I fitting an expression of the form:
$s(t)=\frac{1}{1+\exp[a+\sum_k b_k x_k(t)]}$
Where $a$ and $b_k$ are fitting parameters and $x_k(t)$ an input time series. I have $k=1,...,N$ different types of ...
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How can I fix a poor nonlinear curve fit?
I was trying calculating Fourier transform of some rings. as follow:
By directly calculating of model as several rings, the result showed different from the the experimental ones. So I tried to get ...
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