Generalization Ability To better understand the performance gain of the hierarchical graph-based representation, we design synthetic tests to examine its generalization ability.
we divide the dialog acts into five categories based on their frequency of appearance in the training data: very few shot (1-100 times), few shot (100-500 times), medium shot (500-2K times), many shot (2K-5K times), and very many shot (5K+ times).