For SVM, what is the difference between gamma and sigma in the kernel scale for rbf?
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In some places the kernel scale is defined with gamma, and others sigma. Are the two the same?
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Mudambi Srivatsa
on 26 Jun 2017
Edited: Walter Roberson
on 8 Dec 2021
Yes, they are the same. Refer to the following post for more information:
This parameter was referred to as 'RBF_sigma' in documentation of "svmtrain" function. However, it is replaced by "fitcsvm" which has a 'KernelScale' parameter.
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