classification


matlab SVM returns NaN


here's my problem: I'm trying to classify some data with Support Vector Machine, specifically the MATLAB implementation fitcsvm. However, when I compute the prediction, some of the predictions' posterior probabilities are set to NaN. What does that mean? Here's the code
% Training
model = fitcsvm(trainX, trainY, 'KernelFunction', 'RBF', 'KernelScale', 'auto', 'Prior', 'empirical');
model = fitSVMPosterior(model, 'Leaveout', 'on');
% Prediction
[~,scores] = predict(model, testX);
Most likely, testX contains NaNs. If testX contains an NaN for any variable used as an SVM term, the posterior probability will also be NaN.

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