     <span class="c1"># Splitting the datasets into (train/val) and test.</span>
        <span class="bp">self</span><span class="o">.</span><span class="n">X_train</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">X_test</span><span class="p">,</span> \
        <span class="bp">self</span><span class="o">.</span><span class="n">y_train</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">y_test</span> <span class