ss="nc">Whittaker</span><span class="p">(</span><span class="n">PreprocessingStep</span><span class="p">):</span>
<span class="w">    </span><span class="sd">&quot;&quot;&quot;</span>
<span class="sd">    Denoising based on Discrete Penalised Least Squares (a.k.a Whittakerâˆ’Henderson smoothing).</span>

<span class="sd">    Parameters</span>
<span class="sd">    ----------</span>
<span class="sd">    lam : Number, optional, default=1e3</span>
<span class="sd">        Hyperparameter that controls the sm