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Effective Convolutional Attention Network for Multi-label Clinical Document Classification

Yang Liu,Hua Cheng,Russell Klopfer,Matthew R. Gormley,Thomas Schaaf


Abstract
Multi-label document classification (MLDC) problems can be challenging, especially for long documents with a large label set and a long-tail distribution over labels. In this paper, we present an effective convolutional attention network for the MLDC problem with a focus on medical code prediction from clinical documents. Our innovations are three-fold: (1) we utilize a deep convolution-based encoder with the squeeze-and-excitation networks and residual networks to aggregate the information across the document and learn meaningful document representations that cover different ranges of texts; (2) we explore multi-layer and sum-pooling attention to extract the most informative features from these multi-scale representations; (3) we combine binary cross entropy loss and focal loss to improve performance for rare labels. We focus our evaluation study on MIMIC-III, a widely used dataset in the medical domain. Our models outperform prior work on medical coding and achieve new state-of-the-art results on multiple metrics. We also demonstrate the language independent nature of our approach by applying it to two non-English datasets. Our model outperforms prior best model and a multilingual Transformer model by a substantial margin.
Anthology ID:
2021.emnlp-main.481
Volume:
Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing
Month:
November
Year:
2021
Address:
Online and Punta Cana, Dominican Republic
Editors:
Marie-Francine Moens,Xuanjing Huang,Lucia Specia,Scott Wen-tau Yih
Venue:
EMNLP
SIG:
Publisher:
Association for Computational Linguistics
Note:
Pages:
5941–5953
Language:
URL:
https://aclanthology.org/2021.emnlp-main.481/
DOI:
10.18653/v1/2021.emnlp-main.481
Bibkey:
Cite (ACL):
Yang Liu, Hua Cheng, Russell Klopfer, Matthew R. Gormley, and Thomas Schaaf. 2021.Effective Convolutional Attention Network for Multi-label Clinical Document Classification. InProceedings of the 2021 Conference on Empirical Methods in Natural Language Processing, pages 5941–5953, Online and Punta Cana, Dominican Republic. Association for Computational Linguistics.
Cite (Informal):
Effective Convolutional Attention Network for Multi-label Clinical Document Classification (Liu et al., EMNLP 2021)
Copy Citation:
PDF:
https://aclanthology.org/2021.emnlp-main.481.pdf
Video:
 https://aclanthology.org/2021.emnlp-main.481.mp4
Data
MIMIC-III


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