CODEWITHSUNDEEP
javawekaclassification
ananthv
ananthv

Reputation: 543

SMO confidence measure in weka

I'm writing a classification code using the smo class of weka. But what i'm yet to find is a confidence measure of the classification of an instance. It always either returns 0 or 1 when distributionForInstance is called. I have two classes to be classified into. Any idea how i can get this measure? Thanks.

Upvotes: 4

Views: 897

Answers (1)

ananthv
ananthv

Reputation: 543

Ok I figured out how to get this in case it might help someone. Get the source code for SMO.java and add it to your package. Resolve imports if any. Set m_fitLogisticModels to true. Change smo.buildClassifier(train, cl1, cl2, false, -1, -1); to smo.buildClassifier(train, cl1, cl2, true, -1, -1);. And viola ! distributionForInstance returns confidence scores instead of a hard 0/1.

Upvotes: 3

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