RAM-EHR: Retrieval Augmentation Meets Clinical Predictions on Electronic Health Records

Ran Xu, Wenqi Shi, Yue Yu, Yuchen Zhuang, Bowen Jin, May Dongmei Wang, Joyce Ho, Carl Yang


Abstract
We present RAM-EHR, a Retrieval AugMentation pipeline to improve clinical predictions on Electronic Health Records (EHRs). RAM-EHR first collects multiple knowledge sources, converts them into text format, and uses dense retrieval to obtain information related to medical concepts. This strategy addresses the difficulties associated with complex names for the concepts. RAM-EHR then augments the local EHR predictive model co-trained with consistency regularization to capture complementary information from patient visits and summarized knowledge. Experiments on two EHR datasets show the efficacy of RAM-EHR over previous knowledge-enhanced baselines (3.4% gain in AUROC and 7.2% gain in AUPR), emphasizing the effectiveness of the summarized knowledge from RAM-EHR for clinical prediction tasks.
Anthology ID:
2024.acl-short.68
Volume:
Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers)
Month:
August
Year:
2024
Address:
Bangkok, Thailand
Editors:
Lun-Wei Ku, Andre Martins, Vivek Srikumar
Venue:
ACL
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
754–765
Language:
URL:
https://aclanthology.org/2024.acl-short.68
DOI:
10.18653/v1/2024.acl-short.68
Bibkey:
Cite (ACL):
Ran Xu, Wenqi Shi, Yue Yu, Yuchen Zhuang, Bowen Jin, May Dongmei Wang, Joyce Ho, and Carl Yang. 2024. RAM-EHR: Retrieval Augmentation Meets Clinical Predictions on Electronic Health Records. In Proceedings of the 62nd Annual Meeting of the Association for Computational Linguistics (Volume 2: Short Papers), pages 754–765, Bangkok, Thailand. Association for Computational Linguistics.
Cite (Informal):
RAM-EHR: Retrieval Augmentation Meets Clinical Predictions on Electronic Health Records (Xu et al., ACL 2024)
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PDF:
https://aclanthology.org/2024.acl-short.68.pdf