MF-MNER:中国临床电子医疗记录中MNER的多模型融合
Haoze Du1, Jiahao Xu2, Zhiyong Du3
1Department of Computer Science, North Carolina State University, Raleigh, NC, 27695, USA.
Interdisciplinary sciences, computational life sciences
|April 5, 2024
概括
这项研究介绍了F-MNER,这是一种用于中国临床命名实体识别的新方法,它融合了BART,Bi-LSTM和CRF模型. F-MNER显著提高了识别性能,特别是对于有限的注释数据.
科学领域:
- 自然语言处理自然语言处理.
- 医疗信息学 医疗信息学
- 机器学习 机器学习
背景情况:
- 临床电子医疗记录 (EMR) 通常缺乏足够的中文注释,阻碍了准确的命名实体识别 (NER).
- 现有的NER模型难以应对临床文本数据的复杂性和细微差别.
研究的目的:
- 为中国临床EMR开发一种有效的多医学实体识别 (MMER) 方法.
- 为了应对由于注释数据有限而导致的表现不佳的挑战.
主要方法:
- 提出了一种新的F-MNER方法,集成双向自回归变压器 (BART),双向长期短期存储器 (Bi-LSTM) 和条件随机场 (CRF).
- 该方法涉及数据清理,编码,细分,通过BART进行动态语义融合,通过Bi-LSTM进行序列信息捕获,并使用CRF进行解码.
- 在CCKS2019数据集和真实临床数据集上进行了实验.
主要成果:
- 在CCKS2019数据集上,F-MNER取得了卓越的表现,在微观,宏观和加权平均指标方面表现优于现有模型.
- 与BERT-BiLSTM-CRF相比,F-MNER显示了显著的改进:精度为19.64%,回忆为15.67%,F1得分为17.58% (加权平均值).
- 在真实临床数据集上,F-MNER实现了微平均精度,回忆和F1分数分别为0.638,0.825和0.719.
结论:
- F-MNER方法有效地整合了BART,Bi-LSTM和CRF,大大提高了下游的NER任务.
- 该模型表现出色,特别是在回忆中,即使有有限的注释数据,也显示出其实际意义.
- 该研究提供源代码和数据集,以实现可重现性.
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