Sign up ×
Cross Validated is a question and answer site for people interested in statistics, machine learning, data analysis, data mining, and data visualization. It's 100% free, no registration required.

I have two questions in using LIBSVM

  1. The decision function for C-support vector classification is


    How can I understand the physical meaning of $b$? How can I enable LIBSVM to output these two types of information, $w$ and $b$?

  2. LIBSVM is able to output probability estimates. When reading the articles of SVM, I also read similar term like confidence? I am not sure whether they are talking the same thing?

share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.