title: how does "decision_function" in scikit-learn calculates the scores?
body: <p>I want to define how the <code>decision_function()</code> works, I mean, if there is something equivalent to be able to report that function in a work. I want to see this information in SVC in scikit-learn, and I am using linear, poly and rbf kernel.</p>
  <p>I'm training my models with &quot;ovr&quot; multiclass approach, but I can't find how the scores are calculated to report a function in my article.</p>
  <p>Is this even possible in SVM with linear of even with not linear kernels?</p>