[Scilab-users] question non datafit

[Samuel Gougeon]

Le 04/04/2020 à 09:26, Federico Miyara a écrit :
>
> Dear All,
>
> I'm trying to understand the function datafit.
>
> The documentation says:
>
>     datafit is used for fitting data to a model. For a given function
>     G(p,z), this function finds the best vector of parameters p for
>     approximating G(p,z_i)=0 for a set of measurement vectors z_i.
>     Vector p is found by minimizing
>     G(p,z_1)'WG(p,z_1)+G(p,z_2)'WG(p,z_2)+...+G(p,z_n)'WG(p,z_n)
>
>
> I don't quite understand what is G(p,z_1)'WG(p,z_1). Are some product 
> signs * missing? Shouldn't it be G(p,z_1)'*W*G(p,z_1)? Are these signs 
> implied as in regular algebra notation?


Hello Federico,
Please see the documentation of the /latest/ scilab release:
https://help.scilab.org/docs/6.1.0/en_US/datafit.html
Regards


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