Comments (5)
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Yes. Weights have been considered in gettting dec values that are inputs of
sigmoid_train
Peter Prettenhofer writes:
It seems to me that sigmoid_train doesnt take weights into account.
https://github.com/cjlin1/libsvm/blob/master/svm.cpp#L1705
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but dont we need to take weight also into account when doing Platt scaling? Platt scaling is just a logistic regression with one input (the confidence scores of the SVM), right? Training this model should be done by weighting log loss based on the sample weights.
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Sorry for the late reply. We are studying this issue, but it will take some
time.
Peter Prettenhofer writes:
but dont we need to take weight also into account when doing Platt scaling?
Platt scaling is just a logistic regression with one input (the confidence
scores of the SVM), right? Training this model should be done by weighting log
loss based on the sample weights.—
Reply to this email directly or view it on GitHub.*
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Hmm ... are there other functions that actually use sample weights? I don't even see them described in the README
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