n></span></span>
<span class="r-in"><span><span class="va">positive_class</span> <span class="op">&lt;-</span> <span class="st">"malignant"</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Keep only the predictor variables and outcome</span></span></span>
<span class="r-in"><span><span class="va">mydata</span> <span class="op">&lt;-</span> <span class="va">BreastCancer</span><span class="op">[</span>, <span class="op">-</span><span class="fl">1</sp