ocessing steps in set2set</span>
<span class="sd">        short_cut (bool, optional): use short cut or not</span>
<span class="sd">        batch_norm (bool, optional): apply batch normalization or not</span>
<span class="sd">        activation (str or function, optional): activation function</span>
<span class="sd">        concat_hidden (bool, optional): concat hidden representations from all layers as output</span>
<span class="sd">    """</span>

    <span class="k">def</span> <span class="fm">__init__</s