<p>In <a href="https://github.com/mlpack/mlpack/pull/694#discussion_r68354220">src/mlpack/core/data/imputation_methods/listwise_deletion.hpp</a>:</p>
<pre style='color:#555'>&gt; +#include &lt;mlpack/core.hpp&gt;
&gt; +
&gt; +using namespace std;
&gt; +
&gt; +namespace mlpack {
&gt; +namespace data {
&gt; +
&gt; +/**
&gt; + * complete-case analysis.
&gt; + * Removes all data for a case that has one or more missing values.
&gt; + */
&gt; +template &lt;typename T&gt;
&gt; +class ListwiseDeletion
&gt; +{
&gt; + public:
&gt; +  void Apply(const arma::Mat&lt;T&gt;&amp; input,
</pre>
<p>same as custom_imputaion</p>

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