ct features from `TopkDF` (default: 2).</span>

<span class="sd">    :**Attributes**:</span>
<span class="sd">        - **TrainDF** (*np.ndarray*) -- Extracted features from the training dataset.</span>
<span class="sd">        - **TopkDF** (*np.ndarray*) -- Extracted features from the top-k dataset.</span>

<span class="sd">    **Execution methods**</span>

<span class="sd">    **Calling from a Python program**</span>

<span class="sd">    .. code-block:: python</span>

<span class="sd">            import 