title: How to use libsvm to get probability output
body: <p>I would like to use -b option in LIBSVM and could not find an example usage in Matlab. When I try to write this:</p>
  
  <pre><code>svmtrain(bow, [1;0;0;0;0;0;0;0], '-b 1');
  </code></pre>
  
  <p>I get "Wrong number of arguments" error. When I remove '-b 1' from arguments, in the svmpredict I only get 0 or 1 in result. I want the probability result. How can I do that?</p>
  
  <p>Thanks</p>