Which kernel is used in fitcecoc, a multiclass mode for support vector machines

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Unqua Laraib 2021-6-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/854715-which-kernel-is-used-in-fitcecoc-a-multiclass-mode-for-support-vector-machines

i have read the detailed description available here https://it.mathworks.com/help/stats/fitcecoc.html#bue3ojr-2 again and again but i can't seem to understand which kernel is being used in fitcecoc SVM classifier by default?

I understand that fitcecoc is a binary classifer that is it uses K(K – 1)/2 binary support vector machine (SVM) models using the one-versus-one coding design but i can't understand which kernel is used by default?