Exploiting Persona Information For Diverse Generation Of Conversational Responses

Haoyu Song, Wei-nan Zhang, Yiming Cui, Dong Wang, Ting Liu. Twenty-Eighth International Joint Conference on Artificial Intelligence {IJCAI-19} 2019 – 47 citations

[Paper]    
Model Architecture Evaluation

In human conversations, due to their personalities in mind, people can easily carry out and maintain the conversations. Giving conversational context with persona information to a chatbot, how to exploit the information to generate diverse and sustainable conversations is still a non-trivial task. Previous work on persona-based conversational models successfully make use of predefined persona information and have shown great promise in delivering more realistic responses. And they all learn with the assumption that given a source input, there is only one target response. However, in human conversations, there are massive appropriate responses to a given input message. In this paper, we propose a memory-augmented architecture to exploit persona information from context and incorporate a conditional variational autoencoder model together to generate diverse and sustainable conversations. We evaluate the proposed model on a benchmark persona-chat dataset. Both automatic and human evaluations show that our model can deliver more diverse and more engaging persona-based responses than baseline approaches.

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