<p>In <a href="https://github.com/mlpack/mlpack/pull/694#discussion_r70197459">src/mlpack/core/data/imputation_methods/median_imputation.hpp</a>:</p>
<pre style='color:#555'>&gt; +template &lt;typename T&gt;
&gt; +class MedianImputation
&gt; +{
&gt; + public:
&gt; +  void Impute(const arma::Mat&lt;T&gt;&amp; input,
&gt; +              arma::Mat&lt;T&gt;&amp; output,
&gt; +              const T&amp; mappedValue,
&gt; +              const size_t dimension,
&gt; +              const bool transpose = true)
&gt; +  {
&gt; +    //initiate output
&gt; +    output = input;
&gt; +
&gt; +    if (transpose)
&gt; +    {
&gt; +      arma::Mat&lt;T&gt; medianMat = arma::median(input, 1);
</pre>
<p>Updated</p>

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