Abstract
The modeling of conversational context plays a vital role in emotion recognition from conversation (ERC). In this paper, we put forward a novel idea of encoding the utterances with a directed acyclic graph (DAG) to better model the intrinsic structure within a conversation, and design a directed acyclic neural network, namely DAG-ERC, to implement this idea. In an attempt to combine the strengths of conventional graph-based neural models and recurrence-based neural models, DAG-ERC provides a more intuitive way to model the information flow between long-distance conversation background and nearby context. Extensive experiments are conducted on four ERC benchmarks with state-of-the-art models employed as baselines for comparison. The empirical results demonstrate the superiority of this new model and confirm the motivation of the directed acyclic graph architecture for ERC.- Anthology ID:
- 2021.acl-long.123
- Volume:
- Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers)
- Month:
- August
- Year:
- 2021
- Address:
- Online
- Editors:
- Chengqing Zong, Fei Xia, Wenjie Li, Roberto Navigli
- Venues:
- ACL | IJCNLP
- SIG:
- Publisher:
- Association for Computational Linguistics
- Note:
- Pages:
- 1551–1560
- Language:
- URL:
- https://aclanthology.org/2021.acl-long.123
- DOI:
- 10.18653/v1/2021.acl-long.123
- Cite (ACL):
- Weizhou Shen, Siyue Wu, Yunyi Yang, and Xiaojun Quan. 2021. Directed Acyclic Graph Network for Conversational Emotion Recognition. In Proceedings of the 59th Annual Meeting of the Association for Computational Linguistics and the 11th International Joint Conference on Natural Language Processing (Volume 1: Long Papers), pages 1551–1560, Online. Association for Computational Linguistics.
- Cite (Informal):
- Directed Acyclic Graph Network for Conversational Emotion Recognition (Shen et al., ACL-IJCNLP 2021)
- PDF:
- https://preview.aclanthology.org/emnlp-22-attachments/2021.acl-long.123.pdf
- Code
- shenwzh3/DAG-ERC
- Data
- DailyDialog, EmoryNLP, IEMOCAP, MELD