How to train fitcecoc by using COST SENSITIVE SVM

Question

Elena Casiraghi 2019-8-19

评论： lokesh singh 2019-9-2

Dear, I have a multiclass problem with an highly unbalanced dataset.

How can I train a multiclass, error-correcting output codes (ECOC) model using svm cost sensitive svm?

If I use svm for a binary classifier I would just set the cost matrix.

However, here we have a multiclass poroblem and ECOC models perform much better.

Answer 1

Subhadeep Koley 2019-8-22

MATLAB provides ClassificationECOC and fitcecoc for Multiclass model for support vector machines (SVMs) and other classifiers.

The documentation here might help you.

lokesh singh 2019-9-2

Sir,

thanks for your suggestions but sir how can we use cost in fitcecoc function for multiclass classification.