               <span class="n">k</span><span class="p">,</span>
                                        <span class="n">sigma_1</span><span class="p">,</span> <span class="n">sigma_2</span><span class="p">,</span>
                                        <span class="n">decay_coef_1</span><span class="p">,</span> <span class="n">decay_coef_2</span><span class="p">,</span>
                                        <span class="n">merge_prob</span><span class="p">)</span>

<span class="n">data_a</span> <span cla