&gt; 
#&gt; $step_nu
#&gt; [1] 0.3198165 0.4026348 0.6324854 0.7668089 0.6988827
#&gt; 
#&gt; attr(,&quot;class&quot;)
#&gt; [1] &quot;ford&quot;
</code></pre>
<hr />
<h1 id="chp:conclusion">Conclusion</h1>
<p><strong>FORD</strong> provides an interpretable, irdc-based alternative to FOCI for variable selection in regression tasks. It offers a principled forward selection framework that can detect complex nonlinear relationships and be adapted for fixed-size feature subsets.</p>
<p>For further theoretical d