Conversational Semantic Parsing
Abstract
The structured representation for semantic parsing in task-oriented assistant systems is geared towards simple understanding of one-turn queries. Due to the limitations of the representation, the session-based properties such as co-reference resolution and context carryover are processed downstream in a pipelined system. In this paper, we propose a semantic representation for such task-oriented conversational systems that can represent concepts such as co-reference and context carryover, enabling comprehensive understanding of queries in a session. We release a new session-based, compositional task-oriented parsing dataset of 20k sessions consisting of 60k utterances. Unlike Dialog State Tracking Challenges, the queries in the dataset have compositional forms. We propose a new family of Seq2Seq models for the session-based parsing above, which achieve better or comparable performance to the current state-of-the-art on ATIS, SNIPS, TOP and DSTC2. Notably, we improve the best known results on DSTC2 by up to 5 points for slot-carryover.
Cite
@article{arxiv.2009.13655,
title = {Conversational Semantic Parsing},
author = {Armen Aghajanyan and Jean Maillard and Akshat Shrivastava and Keith Diedrick and Mike Haeger and Haoran Li and Yashar Mehdad and Ves Stoyanov and Anuj Kumar and Mike Lewis and Sonal Gupta},
journal= {arXiv preprint arXiv:2009.13655},
year = {2020}
}