th,
                             <span class="dt">min_child_weight =</span> min_child_weight,
                             <span class="dt">subsample =</span> subsample, <span class="dt">colsample_bytree =</span> <span class="fl">0.3</span>,
                             <span class="dt">lambda =</span> <span class="dv">1</span>, <span class="dt">alpha =</span> <span class="dv">0</span>,
                             <span class="dt">objective =</span> <span class="st">"binary:logistic"</span>,
              