cond-to-last layer</dt>
<dt>To use the concatenation of last 4 layers: use [-1, -2, -3, -4]</dt>
<dt>bert_model(str): alias for transformer_model</dt>
<dt><strong><code>word_embedding_dim</code></strong> :&ensp;<code>int</code></dt>
<dd>word embedding dimensions.</dd>
<dt><strong><code>char_embedding_dim</code></strong> :&ensp;<code>int</code></dt>
<dd>character embedding dimensions.</dd>
<dt><strong><code>word_lstm_size</code></strong> :&ensp;<code>int</code></dt>
<dd>character LSTM feature extractor outpu