title: How to pass XGBoost fit parameters when using OneVsRestClassifier?
body: <p>I want to pass the fit's parameters of <code>xgboost</code> through <code>OneVsRestClassifier</code>'s fit method.</p>
  
  <pre><code>clf = OneVsRestClassifier( XGBClassifier(objective='binary:logistic', seed=0))
  # Want to pass `eval_set` and 'eval_metric' to xgboost model.
  clf.fit(X_train, y_train, estimator__eval_metric='aucpr', estimator__eval_set= eval_set_xgboost)
  </code></pre>
  
  <blockquote>
    <p>Error: fit() got an unexpected keyword argument 'estimator__eval_metric'</p>
  </blockquote>
  
  <p>Can you please help me how can I pass the <code>XGBoost</code> fit parameters using <code>OneVsRestClassifier</code> fit method?</p>