title: what is Gridsearch.cv_results_ , could any explain all the things in that i.e mean_test_score etc .?
body: <p>I am doing hyperparameter tuning with <code>GridSearchCV</code> for Decision Trees. I have fit the model and I am trying to find what does exactly <code>Gridsearch.cv_results_</code> gives. I have read the documentation but still its not clear. Could anyone explain this attribute?</p>
  
  <p>my code is below :</p>
  
  <pre><code>depth={"max_depth":[1,5,10,50,100,500,1000],
         "min_samples_split":[5,10,100,500]}       
  
  DTC=DecisionTreeClassifier(class_weight="balanced")
  
  DTC_Grid=GridSearchCV(DTC,param_grid=depth , cv=3, scoring='roc_auc')
  DTC_Bow=DTC_Grid.fit(xtrain_bow,ytrain_bow) 
  </code></pre>