title: How to use log_loss scorer in gridsearchcv?
body: <p>Is it possible to use log_loss metric in gridsearchcv?</p>
  
  <p>I have seen few posts where people mentioned about <code>neg_log_loss</code>? Is it same as <code>log_loss</code>? If not is it possible to use log_loss directly in gridsearchcv?</p>