=</span> <span class='kw'>NULL</span>, <span class='kw'>exclude_variables</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>categorical_variables</span> <span class='kw'>=</span> <span class='kw'>NULL</span>, <span class='kw'>train_size</span> <span class='kw'>=</span> <span class='fl'>0.667</span>, <span class='kw'>foldid</span> <span class='kw'>=</span> <span class='kw'>NULL</span>,
  <span class='kw'>survival_rate_cutoff</span> <span class='kw'>=</span> <span class='fl'>0.