need to perform three level classification ....multivariate dataset are extracted and they need to be classified based on the training sets. help me with some matlab coding.
does Three level means three classes?
you can add them in sample, training and group (the names of the classes)
the attached file is an example of four classes wiht KNN
the picture is the result from this example
You can also consider using a Random Forest classifier, a very versatile machine learning algorithm which is quite robust against outliers and does not require any feature scaling or preparation. It can do single output multinomial classification. I believe there is also a Matlab implementation, see here:
https://www.mathworks.com/help/stats/treebagger.html?requestedDomain=www.mathworks.com
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