<p>In <a href="https://github.com/mlpack/mlpack/pull/516#discussion_r52055532">src/mlpack/methods/ann/layer/sparse_bias_layer.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -2,7 +2,7 @@
&gt;   * @file sparse_bias_layer.hpp
&gt;   * @author Tham Ngap Wei
&gt;   *
&gt; - * Definition of the SparseBiasLayer class.
&gt; + * Definition of the BiasLayer class.
</pre>
<p>Maybe this is a documentation mistake?</p>

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