lConnection.html#errorValue(boolean)">errorValue</a></code>&nbsp;in class&nbsp;<code><a href="../../../../weka/classifiers/functions/neural/NeuralConnection.html" title="class in weka.classifiers.functions.neural">NeuralConnection</a></code></dd>
<dt><span class="strong">Parameters:</span></dt><dd><code>calculate</code> - True if the value should be calculated if it hasn't been
 already.</dd>
<dt><span class="strong">Returns:</span></dt><dd>The error value, or NaN, if the value has not been calculated.</dd>