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End-to-End Learning of Task-Oriented Dialogs

Bing Liu, Ian Lane


Abstract
In this thesis proposal, we address the limitations of conventional pipeline design of task-oriented dialog systems and propose end-to-end learning solutions. We design neural network based dialog system that is able to robustly track dialog state, interface with knowledge bases, and incorporate structured query results into system responses to successfully complete task-oriented dialog. In learning such neural network based dialog systems, we propose hybrid offline training and online interactive learning methods. We introduce a multi-task learning method in pre-training the dialog agent in a supervised manner using task-oriented dialog corpora. The supervised training agent can further be improved via interacting with users and learning online from user demonstration and feedback with imitation and reinforcement learning. In addressing the sample efficiency issue with online policy learning, we further propose a method by combining the learning-from-user and learning-from-simulation approaches to improve the online interactive learning efficiency.
Anthology ID:
N18-4010
Volume:
Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Student Research Workshop
Month:
June
Year:
2018
Address:
New Orleans, Louisiana, USA
Editors:
Silvio Ricardo Cordeiro, Shereen Oraby, Umashanthi Pavalanathan, Kyeongmin Rim
Venue:
NAACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
67–73
Language:
URL:
https://aclanthology.org/N18-4010
DOI:
10.18653/v1/N18-4010
Bibkey:
Cite (ACL):
Bing Liu and Ian Lane. 2018. End-to-End Learning of Task-Oriented Dialogs. In Proceedings of the 2018 Conference of the North American Chapter of the Association for Computational Linguistics: Student Research Workshop, pages 67–73, New Orleans, Louisiana, USA. Association for Computational Linguistics.
Cite (Informal):
End-to-End Learning of Task-Oriented Dialogs (Liu & Lane, NAACL 2018)
Copy Citation:
PDF:
https://aclanthology.org/N18-4010.pdf
Video:
 https://aclanthology.org/N18-4010.mp4