<blockquote>
<p>but instead for something where real-valued outputs are expected?</p>
</blockquote>

<p>Maybe we could change it from </p>

<p>arma::Row</p>

<p>to?</p>

<p>arma::Row</p>

<p>I am mention about the codes of ffn, ann and rnn,things like </p>

<p><code>void Predict(arma::mat&amp; predictors, arma::mat&amp; responses);</code></p>

<p>Could we add an overloaded function, like</p>

<p><code>void Predict(arma::mat&amp; predictors, arma::Row&lt;double&gt;&amp; responses);</code></p>

<p>To the class?</p>

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