<p>In <a href="https://github.com/mlpack/mlpack/pull/457#discussion_r40674825">src/mlpack/methods/softmax_regression/softmax_regression.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -141,13 +140,8 @@ class SoftmaxRegression
&gt;     * @param numClasses Number of classes for classification.
&gt;     * @return Objective value of the final point.
&gt;     */
&gt; -  double Train(const arma::mat &amp;data, const arma::vec&amp; labels,
&gt; -               const size_t numClasses);
&gt; -
&gt; -  //! Sets the size of the input vector.
&gt; -  size_t&amp; InputSize() { return inputSize; }
&gt; -  //! Gets the size of the input vector.
&gt; -  size_t InputSize() const { return inputSize; }
</pre>
<p>Looks good to me:)</p>

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