Function classify in matlab

I'm using function classify yfit=classify(xtest,xtrain,ytrain,'quadratic') when I apply this function to specific signal I've obtained yfit the exacte opposite of ytest (which take value 0 pr 1) and i can't find the cause. If I apply it to another signals it work properly. Please can anyone help me

Answer 1

[Harshit]

The classifiers accuracy can never be 100%. The classifiers gets trained on training set and then work on the data. Porbably you should make your training set richer or mark that as an error.

[joelle]

Hi Harshit I know that the classifier accuracy can never be 100% but my problem is when I've applied this function to some signal the accuracy is 0 %. I've obtained just the opposite of the real value.