 class="fu"><a href="https://rdrr.io/r/base/MathFun.html">abs</a></span><span class="op">(</span><span class="va">validation</span><span class="op">$</span><span class="va">valid_roc</span><span class="op">[</span>, <span class="st">"FPR"</span><span class="op">]</span> <span class="op">-</span> <span class="fl">0.05</span><span class="op">)</span><span class="op">)</span>
<span class="va">cut.fpr95</span> <span class="op">&lt;-</span> <span class="va">validation</span><span class="op">$</span><span class="