 With the transformer based models dominating the seq2seq problems lately, a natural question is to understand the applicability of the notion of hierarchy in transformer based dialog systems.
<fluency>  With the transformer based models dominating the seq2seq problems lately, a natural question is to understand the applicability of the notion of hierarchy in transformer based dialog systems.
 With the transformer-based models dominating the seq2seq problems lately, a natural question is to understand the applicability of the notion of hierarchy in transformer based dialog systems.