cy</span>
<span class="sd">        between two groups.</span>

<span class="sd">    :**Parameters**:</span>
<span class="sd">        - `TrainDF` (*pd.DataFrame*): The original training dataset.</span>
<span class="sd">        - `TopkDF` (*pd.DataFrame*): The retrieved top-k dataset.</span>
<span class="sd">        - `startBandTrainDF` (*int*): Column index from which to extract features from `TrainDF` (default: 2).</span>
<span class="sd">        - `startBandTopkDF` (*int*): Column index from which to extra