How do I generate a confusion matrix for multi-class example?

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Kirty Vedula
Kirty Vedula 2013-2-22
评论： Selena Johnson 2018-8-30
I have 8 classes to be allocated to a 10 X 800 sized dataset. I have done the classification successfully - using Support Vector Machines. But I am puzzled as to how I can show the results of it? How do I generate a confusion matrix for 8 classes? What is the best way to view the hyperplane generated by the multiclass SVM?
Please guide me through this. Provide me some examples.
Help is very much appreciated. Thanks!

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回答（2 个）

Eric Nunes
Eric Nunes 2014-4-25
You just need to have 2 parameters, the predicted labels and the actual labels. After that just use C = confusionmat(predicted , Actual). It will construct the confusion matrix.
Abbas Manthiri S
Abbas Manthiri S 2017-2-7
  1 个评论
Selena Johnson
Selena Johnson 2018-8-30
Hi does this code work for categorical data as well? I just tried to run it and it is giving me error messages about line 45.

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