Bin Sun, Kan Li*,
School of Computer Science, Beijing Institute of Technology, Beijing, 100081, China
Received 7 December 2020, Accepted 17 February 2021, Available Online 19 March 2021.
- Neural dialogue generation; Open-domain dialogue system; Natural language processing
Open-Domain Dialogue Generation (human–computer interaction) is an important issue in the field of Natural Language Processing (NLP). Because of the improvement of deep learning techniques, a large number of neural dialogue generative methods were proposed to generate better responses. In this survey, we elaborated the research history of these existing generative methods, and then roughly divided them into six categories, i.e., Encoder-Decoder framework-based methods, Hierarchical Recurrent Encoder-Decoder (HRED)-based methods, Variational Autoencoder (VAE)-based methods, Reinforcement Learning (RL)- based methods, Generative Adversarial Network (GAN)-based methods, and pretraining-model-based methods. We dived into the methods of each category and gave the detailed discussions of these methods. After that, we presented a comparison among the different categories of methods and analyzed their advantages and disadvantages. We enumerated some open access public datasets and some commonly used automatic evaluating metrics. Finally, we discuss some possible research directions that can take the research of neural dialogue generation into a new frontier in the future.
- © 2021 The Authors. Published by Atlantis Press B.V.
- This is an open access article under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).