SMRT Chatbots: Improving Non-Task-Oriented Dialog with Simulated Multiple Reference Training
2020-11-01Findings of the Association for Computational LinguisticsUnverified0· sign in to hype
Huda Khayrallah, João Sedoc
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Non-task-oriented dialog models suffer from poor quality and non-diverse responses. To overcome limited conversational data, we apply Simulated Multiple Reference Training (SMRT; Khayrallah et al., 2020), and use a paraphraser to simulate multiple responses per training prompt. We find SMRT improves over a strong Transformer baseline as measured by human and automatic quality scores and lexical diversity. We also find SMRT is comparable to pretraining in human evaluation quality, and outperforms pretraining on automatic quality and lexical diversity, without requiring related-domain dialog data.