Paper Info
Title
Chinese medical dialogue information extraction via contrastive multi-utterance inference
Abstract
Medical Dialogue Information Extraction (MDIE) is a promising task for modern medical care systems, which greatly facilitates the development of many real-world applications such as electronic medical record generation, automatic disease diagnosis, etc. Recent methods have firstly achieved considerable performance in Chinese MDIE but still suffer from some inherent limitations, such as poor exploitation of the inter-dependencies in multiple utterances, weak discrimination of the hard samples. In this paper, we propose a contrastive multi-utterance inference (CMUI) method to address these issues. Specifically, we first use a type-aware encoder to provide an efficient encode mechanism toward different categories. Subsequently, we introduce a selective attention mechanism to explicitly capture the dependencies among utterances, which thus constructs a multi-utterance inference. Finally, a supervised contrastive learning approach is integrated into our framework to improve the recognition ability for the hard samples. Extensive experiments show that our model achieves state-of-the-art performance on a public benchmark Chinese-based dataset and delivers significant performance gain on MDIE as compared with baselines. Specifically, we outperform the state-of-the-art results in Fl-score by 2.27%, 0.55% in Recall and 3.61% in Precision (The codes that support the findings of this study are openly available in CMUI at https://github. com/jc435/CMUI.).
Year
DOI
Venue
2022
10.1093/bib/bbac284
BRIEFINGS IN BIOINFORMATICS
Keywords
DocType
Volume
Chinese medical dialogue information extraction, contrastive learning, selective attention, multi-utterance inference, hard sample discriminative
Journal
23
Issue
ISSN
Citations 
4
1467-5463
0
PageRank 
References 
Authors
0.34
0
5
Name
Order
Citations
PageRank
Jianhua Dai189651.62
Chao Jiang200.34
Ruoyao Peng300.34
Daojian Zeng400.34
Yangding Li500.34