code><span>| </span><span><span class="constructor">LSTM</span> <span class="keyword">of</span> <a href="LSTM/index.html#type-neuron_typ">LSTM.neuron_typ</a></span></code></li><li id="type-neuron.GRU" class="def variant constructor anchored"><a href="#type-neuron.GRU" class="anchor"></a><code><span>| </span><span><span class="constructor">GRU</span> <span class="keyword">of</span> <a href="GRU/index.html#type-neuron_typ">GRU.neuron_typ</a></span></code></li><li id="type-neuron.Recurrent" class="def variant 