fitcsvm - setting sigma value?

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Nicolas Jaccard
Nicolas Jaccard el 20 de Feb. de 2015
Comentada: Nicolas Jaccard el 21 de Feb. de 2015
Hi all,
I am currently using the built-in "fitcsvm" function to train a classifier and I am slightly confused by the documentation. I would like to compare the performance of linear and RBF kernels, which is easy enough. However, when I wanted to tune parameters, I could not find an obvious way of setting the RBF kernel sigma value. There is the "KernelScale" parameter but I am confused as to what it actually does as it can be set for linear and polynomial kernels as well?
I am missing something obvious in the documentation?
ps: this was also posted on Newsreader.
Thanks for your help.
Nicolas
  1 comentario
Nicolas Jaccard
Nicolas Jaccard el 21 de Feb. de 2015
This was addressed in the post in Newsreader. In short, setting the KernelScale is equivalent to setting the RBF sigma.
Nicolas

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