A Unified Query-based Generative Model for Question Generation and Question Answering
Table 1: Results on question generation. *There is no published scores for Zhou et al. (2017) without the rich features, so we re-implemented their system and show the result.
['Models', 'Split 1 BLEU-4', 'Split 1 METEOR', 'Split 1 ROUGE-L', 'Split 2 BLEU-4']
et al. Since Zhou et al. adopts rich features (such as named entity tags and part-of-speech tags) , we re-implement a version without these rich features (w/o rich feature) for fair comparison. We also implement two versions of our model: (1) MPQG is our model only trained with the cross-entropy loss, and (2) MPQG+R is our model fine-tuned with the policy gradient reinforcement learning algorithm after pretraining.