
and a high hit rate). For the <code>titanic</code> data, this implies
that <em>none</em> of the cues predicts very well on its own. The best
individual cue appears to be <code>sex</code> (indicated as 1), followed
by <code>class</code> (2). By contrast, <code>age</code> (3) seems a
pretty poor cue for predicting survival on its own (despite its
specificity of 97%).</p>
<p>Inspecting cue accuracies can provide valuable information for
constructing FFTs. While they provide lower bounds on the performance