Abstract
Sequence generation models for dialogue are known to have several problems: they tend to produce short, generic sentences that are uninformative and unengaging. Retrieval models on the other hand can surface interesting responses, but are restricted to the given retrieval set leading to erroneous replies that cannot be tuned to the specific context. In this work we develop a model that combines the two approaches to avoid both their deficiencies: first retrieve a response and then refine it – the final sequence generator treating the retrieval as additional context. We show on the recent ConvAI2 challenge task our approach produces responses superior to both standard retrieval and generation models in human evaluations.- Anthology ID:
- W18-5713
- Volume:
- Proceedings of the 2018 EMNLP Workshop SCAI: The 2nd International Workshop on Search-Oriented Conversational AI
- Month:
- October
- Year:
- 2018
- Address:
- Brussels, Belgium
- Venue:
- EMNLP
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 87–92
- Language:
- URL:
- https://aclanthology.org/W18-5713
- DOI:
- 10.18653/v1/W18-5713
- Cite (ACL):
- Jason Weston, Emily Dinan, and Alexander Miller. 2018. Retrieve and Refine: Improved Sequence Generation Models For Dialogue. In Proceedings of the 2018 EMNLP Workshop SCAI: The 2nd International Workshop on Search-Oriented Conversational AI, pages 87–92, Brussels, Belgium. Association for Computational Linguistics.
- Cite (Informal):
- Retrieve and Refine: Improved Sequence Generation Models For Dialogue (Weston et al., EMNLP 2018)
- PDF:
- https://preview.aclanthology.org/auto-file-uploads/W18-5713.pdf