selecting c and gamma value

Question

Hi I am performing SVM classification using SMO, in which my kernel is RBF, now I want to select c and sigma values, using grid search and cros

Answer 1

Read A Practical Guide to Support Vector Classication by Chih-Wei Hsu, Chih-Chung Chang, and Chih-Jen. They address this exact issue and explain methods for performing a grid-search for parameter selection. http://www.csie.ntu.edu.tw/~cjlin/papers/guide/guide.pdf