<p>In <a href="https://github.com/mlpack/mlpack/pull/516#discussion_r52055582">src/mlpack/methods/ann/layer/sparse_bias_layer.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -36,8 +40,8 @@ class SparseBiasLayer
&gt;  {
&gt;   public:
&gt;    /**
&gt; -   * Create the SparseBiasLayer object using the specified number of units and
&gt; -   * bias parameter.
&gt; +   * Create the BiasLayer object using the specified number of units and bias
&gt; +   * parameter.
</pre>
<p>Same thing here, maybe a mistake?</p>

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