ys</span> <span class="o">=</span> <span class="p">(</span><span class="s1">&#39;abs_rel&#39;</span><span class="p">,</span> <span class="s1">&#39;sqr_rel&#39;</span><span class="p">,</span> <span class="s1">&#39;rmse&#39;</span><span class="p">,</span> <span class="s1">&#39;rmse_log&#39;</span><span class="p">,</span> <span class="s1">&#39;a1&#39;</span><span class="p">,</span> <span class="s1">&#39;a2&#39;</span><span class="p">,</span> <span class="s1">&#39;a3&#39;</span><span class="p">)</span>
        