 of hidden layer in MPNN, e.g,  mpnn_hidden_size = 256.</p></li>
<li><p><strong>mpnn_depth</strong> (int) - specify depth of MPNN, e.g.,  mpnn_depth = 3.</p></li>
</ul>
<p><strong>Calling functions</strong> implement the feedforward procedure of MPNN.</p>
<div class="highlight-python notranslate"><div class="highlight"><pre><span></span><span class="n">forward</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">feature</span><span class="p">)</span>
</pre></div