Learning Cooperative Interactions for Multi-Overlap Aspect Sentiment Triplet Extraction

Shiman Zhao, Wei Chen, Tengjiao Wang


Abstract
Aspect sentiment triplet extraction (ASTE) is an essential task, which aims to extract triplets(aspect, opinion, sentiment). However, overlapped triplets, especially multi-overlap triplets,make ASTE a challenge. Most existing methods suffer from multi-overlap triplets becausethey focus on the single interactions between an aspect and an opinion. To solve the aboveissues, we propose a novel multi-overlap triplet extraction method, which decodes the complexrelations between multiple aspects and opinions by learning their cooperative interactions. Overall, the method is based on an encoder-decoder architecture. During decoding, we design ajoint decoding mechanism, which employs a multi-channel strategy to generate aspects andopinions through the cooperative interactions between them jointly. Furthermore, we constructa correlation-enhanced network to reinforce the interactions between related aspectsand opinions for sentiment prediction. Besides, a relation-wise calibration scheme is adoptedto further improve performance. Experiments show that our method outperforms baselines,especially multi-overlap triplets.
Anthology ID:
2022.findings-emnlp.243
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2022
Month:
December
Year:
2022
Address:
Abu Dhabi, United Arab Emirates
Editors:
Yoav Goldberg, Zornitsa Kozareva, Yue Zhang
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
3337–3347
Language:
URL:
https://aclanthology.org/2022.findings-emnlp.243
DOI:
10.18653/v1/2022.findings-emnlp.243
Bibkey:
Cite (ACL):
Shiman Zhao, Wei Chen, and Tengjiao Wang. 2022. Learning Cooperative Interactions for Multi-Overlap Aspect Sentiment Triplet Extraction. In Findings of the Association for Computational Linguistics: EMNLP 2022, pages 3337–3347, Abu Dhabi, United Arab Emirates. Association for Computational Linguistics.
Cite (Informal):
Learning Cooperative Interactions for Multi-Overlap Aspect Sentiment Triplet Extraction (Zhao et al., Findings 2022)
Copy Citation:
PDF:
https://aclanthology.org/2022.findings-emnlp.243.pdf