title: What is the XGBoost regulation alpha range?
body: <p>As documetation said :
  <a href="https://xgboost.readthedocs.io/en/latest/parameter.html#general-parameters" rel="nofollow noreferrer">https://xgboost.readthedocs.io/en/latest/parameter.html#general-parameters</a></p>
  <p>alpha [default=0, alias: reg_alpha]:</p>
  <p>L1 regularization term on weights. Increasing this value will make model more conservative.</p>
  <p>I'm wondering can alpha be 100,1000? If so, how find the best alpha?</p>