c and gamma for multiclass svm

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Huthaifa Abuhammad
Huthaifa Abuhammad 2016-10-16
Hi all,
I have a data of 7 classes. When I use fitcecoc with linear kernel it works, but when I use (Gaussian) radial basis function kernel, it gives all data in one class. Please help me. Moreover How to obtain the parmaters c and gamma (rbf kernel) using 10 fold crossvalidation and grid search?
thanks

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