<p>In <a href="https://github.com/mlpack/mlpack/pull/751#discussion_r73780154">src/mlpack/core/dists/gamma_distribution.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -78,6 +86,19 @@ class GammaDistribution
&gt;       */
&gt;      void Train(const arma::mat&amp; rdata, const double tol = 1e-8);
&gt;      
&gt; +    /** Fits an alpha and beta parameter according to observation probabilities.
&gt; +     * 
&gt; +     * @param observations The reference data, one observation per column
&gt; +     * @param probabilities The probability of each observation. One value per
&gt; +     *     column of the observations matrix.
&gt; +     * @param tol Convergence tolerance. This is *not* an absolute measure:
&gt; +     *    It will stop the approximation once the *change* in the value is 
&gt; +     *    smaller than tol.
&gt; +     */
&gt; +    void Train(const arma::mat&amp; observations, 
&gt; +                                  const arma::vec&amp; probabilities,
&gt; +                                  const double tol = 1e-8);
</pre>
<p>Indentation seems odd here.</p>

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