We adapted BERTNLU from ConvLab-2.  We implemented a rule-based model (RuleDST) and adapted TRADE (Transferable Dialogue State Generator) BIBREF19 in this experiment.  We adapted a vanilla policy trained in a supervised fashion from ConvLab-2 (SL policy).  
 Question: What are the benchmark models?
BERTNLU from ConvLab-2 a rule-based model (RuleDST)  TRADE (Transferable Dialogue State Generator)  a vanilla policy trained in a supervised fashion from ConvLab-2 (SL policy)