Consistent Response Generation with Controlled Specificity

Junya Takayama, Yuki Arase


Abstract
We propose a method to control the specificity of responses while maintaining the consistency with the utterances. We first design a metric based on pointwise mutual information, which measures the co-occurrence degree between an utterance and a response. To control the specificity of generated responses, we add the distant supervision based on the co-occurrence degree and a PMI-based word prediction mechanism to a sequence-to-sequence model. With these mechanisms, our model outputs the words with optimal specificity for a given specificity control variable. In experiments with open-domain dialogue corpora, automatic and human evaluation results confirm that our model controls the specificity of the response more sensitively than the conventional model and can generate highly consistent responses.
Anthology ID:
2020.findings-emnlp.396
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2020
Month:
November
Year:
2020
Address:
Online
Editors:
Trevor Cohn, Yulan He, Yang Liu
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
4418–4427
Language:
URL:
https://aclanthology.org/2020.findings-emnlp.396
DOI:
10.18653/v1/2020.findings-emnlp.396
Bibkey:
Cite (ACL):
Junya Takayama and Yuki Arase. 2020. Consistent Response Generation with Controlled Specificity. In Findings of the Association for Computational Linguistics: EMNLP 2020, pages 4418–4427, Online. Association for Computational Linguistics.
Cite (Informal):
Consistent Response Generation with Controlled Specificity (Takayama & Arase, Findings 2020)
Copy Citation:
PDF:
https://aclanthology.org/2020.findings-emnlp.396.pdf
Data
DailyDialog