http://www.mathworks.com/matlabcentral/linkexchange/links/2916-multi-class-svm-implementation-in-matlab

http://www.mathworks.com/matlabcentral/fileexchange/39352-multi-class-svm

Usually, N times 1-vs-1 classification is performed.

Hi, You must combine several two-class SVM. For example, you can use one-against-all or one-against-one, techniques.

I recommend LIBSVM (http://www.csie.ntu.edu.tw/~cjlin/libsvm/), which features a good Matlab interface.

http://www.mathworks.com/help/stats/svmclassify.html

multisvm matlab function

http://www.mathworks.com/matlabcentral/fileexchange/39352-multi-class-svm?focused=3776247&tab=function

I strongly recommenf the libsvm.

Multi-class SVM is very complex to understand as well as to implement. Better way is to use binary SVM using "OVO" (One Vs One) or "OVA" (One Vs All).

Now, matlab offers a function named fitcecoc() which is designed specially for multiclass SVM by error correction method. You can apply it. for details please go to the following link: https://www.mathworks.com/help/stats/fitcecoc.html

Thanks

in this page https://www.mathworks.com/help/stats/fitcecoc.html

The explication of this function is :

Mdl = fitcecoc(Tbl,ResponseVarName) returns a full, trained, multiclass, error-correcting output codes (ECOC) model using the predictors in table Tbl and the class labels in Tbl.ResponseVarName. fitcecoc uses K(K – 1)/2 binary support vector machine (SVM) models using the one-versus-one coding design, where K is the number of unique class labels (levels). Mdl is a ClassificationECOC model.

Someone explain to me how to use this function to obtain multiclass SVM graph?

Thanks

Try this:

https://www.mathworks.com/matlabcentral/fileexchange/33170-multi-class-support-vector-machine

Refer to this:

https://in.mathworks.com/help/stats/fitcecoc.html

Try these links:

https://www.mathworks.com/help/stats/classificationecoc.html;jsessionid=4226bbe8f0ba602eeed88b297f4d

https://www.mathworks.com/matlabcentral/fileexchange/39352-multi-class-svm

https://www.mathworks.com/matlabcentral/fileexchange/62061-multi-class-svm

The best choice is LibSvm.