Domain-Expanded ASTE: Rethinking Generalization in Aspect Sentiment Triplet Extraction

Yew Ken Chia, Hui Chen, Guizhen Chen, Wei Han, Sharifah Mahani Aljunied, Soujanya Poria, Lidong Bing


Abstract
Aspect Sentiment Triplet Extraction (ASTE) is a challenging task in sentiment analysis, aiming to provide fine-grained insights into human sentiments. However, existing benchmarks are limited to two domains and do not evaluate model performance on unseen domains, raising concerns about the generalization of proposed methods. Furthermore, it remains unclear if large language models (LLMs) can effectively handle complex sentiment tasks like ASTE. In this work, we address the issue of generalization in ASTE from both a benchmarking and modeling perspective. We introduce a domain-expanded benchmark by annotating samples from diverse domains, enabling evaluation of models in both in-domain and out-of-domain settings. Additionally, we propose CASE, a simple and effective decoding strategy that enhances trustworthiness and performance of LLMs in ASTE. Through comprehensive experiments involving multiple tasks, settings, and models, we demonstrate that CASE can serve as a general decoding strategy for complex sentiment tasks. By expanding the scope of evaluation and providing a more reliable decoding strategy, we aim to inspire the research community to reevaluate the generalizability of benchmarks and models for ASTE. Our code, data, and models are available at https://github.com/DAMO-NLP-SG/domain-expanded-aste.
Anthology ID:
2024.sicon-1.11
Volume:
Proceedings of the Second Workshop on Social Influence in Conversations (SICon 2024)
Month:
November
Year:
2024
Address:
Miami, Florida, USA
Editors:
James Hale, Kushal Chawla, Muskan Garg
Venue:
SICon
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Publisher:
Association for Computational Linguistics
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Pages:
152–165
Language:
URL:
https://aclanthology.org/2024.sicon-1.11
DOI:
Bibkey:
Cite (ACL):
Yew Ken Chia, Hui Chen, Guizhen Chen, Wei Han, Sharifah Mahani Aljunied, Soujanya Poria, and Lidong Bing. 2024. Domain-Expanded ASTE: Rethinking Generalization in Aspect Sentiment Triplet Extraction. In Proceedings of the Second Workshop on Social Influence in Conversations (SICon 2024), pages 152–165, Miami, Florida, USA. Association for Computational Linguistics.
Cite (Informal):
Domain-Expanded ASTE: Rethinking Generalization in Aspect Sentiment Triplet Extraction (Chia et al., SICon 2024)
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PDF:
https://aclanthology.org/2024.sicon-1.11.pdf