 <span class="n">num_epoch</span><span class="p">,</span>
           <span class="n">learning_rate</span><span class="p">,</span>
           <span class="n">momentum</span><span class="p">,</span>
           <span class="n">weight_decay</span><span class="p">,</span>
           <span class="n">use_lg_returns</span><span class="p">,</span>
           <span class="n">PCA_used</span><span class="p">,</span>
           <span class="n">data_X</span><span class="o">.</span><span class="n">shape</span><span class=