Dialogue Medical Information Extraction with Medical-Item Graph and Dialogue-Status Enriched Representation

Lei Gao, Xinnan Zhang, Xian Wu, Shen Ge, Yefeng Zheng


Abstract
The multi-turn doctor-patient dialogue includes rich medical knowledge, like the symptoms of the patient, the diagnosis and medication suggested by the doctor. If mined and represented properly, such medical knowledge can benefit a large range of clinical applications, including diagnosis assistance and medication recommendation. To derive structured knowledge from free text dialogues, we target a critical task: the Dialogue Medical Information Extraction (DMIE). DMIE aims to detect pre-defined clinical meaningful medical items (symptoms, surgery, etc.) as well as their statuses (positive, negative, etc.) from the dialogue. Existing approaches mainly formulate DMIE as a multi-label classification problem and ignore the relationships among medical items and statuses. Different from previous approaches, we propose a heterogeneous graph to model the relationship between items. We further propose two consecutive attention based modules to enrich the item representation with the dialogue and status. In this manner, we are able to model the relationships among medical items and statuses in the DMIE task. Experimental results on the public benchmark data set show that the proposed model outperforms previous works and achieves the state-of-the-art performance.
Anthology ID:
2023.findings-emnlp.888
Volume:
Findings of the Association for Computational Linguistics: EMNLP 2023
Month:
December
Year:
2023
Address:
Singapore
Editors:
Houda Bouamor, Juan Pino, Kalika Bali
Venue:
Findings
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
13311–13321
Language:
URL:
https://aclanthology.org/2023.findings-emnlp.888
DOI:
10.18653/v1/2023.findings-emnlp.888
Bibkey:
Cite (ACL):
Lei Gao, Xinnan Zhang, Xian Wu, Shen Ge, and Yefeng Zheng. 2023. Dialogue Medical Information Extraction with Medical-Item Graph and Dialogue-Status Enriched Representation. In Findings of the Association for Computational Linguistics: EMNLP 2023, pages 13311–13321, Singapore. Association for Computational Linguistics.
Cite (Informal):
Dialogue Medical Information Extraction with Medical-Item Graph and Dialogue-Status Enriched Representation (Gao et al., Findings 2023)
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PDF:
https://aclanthology.org/2023.findings-emnlp.888.pdf