arXiv:2510.15269cs.CLcs.AI2025-10中稿 · as BIBM 2025 Regul…被引 2

动态调整训练难度,让模型先学简单病历再攻复杂案例。

TACL: Threshold-Adaptive Curriculum Learning Strategy for Enhancing Medical Text Understanding

  • 根据病历复杂度动态分层,按难易程度渐进训练。
  • 在多语言病历上提升诊断编码、再入院预测等任务效果。
  • 适合需要泛化能力的医疗文本理解场景,尤其罕见病建模。

电子病历(EMRs)是现代医疗的核心,蕴含患者诊疗关键信息,对临床决策与健康分析具有重要价值。然而,其非结构化特性、领域专有语言及上下文差异,使得自动化理解极具挑战。现有自然语言处理方法常将所有数据视为同等难度,忽视记录间的复杂性差异,制约模型在罕见或复杂病例上的泛化能力。本文提出TACL(阈值自适应课程学习)框架,借鉴循序渐进学习理念,动态依据样本复杂度调整训练策略。通过将数据按难度分级,优先训练简单样本以构建基础认知,再逐步引入复杂病例。在英文与中文多语言临床数据上,TACL显著提升自动ICD编码、再入院预测及中医证候辨识等多项任务表现。该方法不仅增强系统性能,还展现出跨医学领域统一建模的潜力,为更精准、可扩展、全球适用的医疗文本理解提供新路径。

原文摘要 · Abstract (English)

Medical texts, particularly electronic medical records (EMRs), are a cornerstone of modern healthcare, capturing critical information about patient care, diagnoses, and treatments. These texts hold immense potential for advancing clinical decision-making and healthcare analytics. However, their unstructured nature, domain-specific language, and variability across contexts make automated understanding an intricate challenge. Despite the advancements in natural language processing, existing methods often treat all data as equally challenging, ignoring the inherent differences in complexity across clinical records. This oversight limits the ability of models to effectively generalize and perform well on rare or complex cases. In this paper, we present TACL (Threshold-Adaptive Curriculum Learning), a novel framework designed to address these challenges by rethinking how models interact with medical texts during training. Inspired by the principle of progressive learning, TACL dynamically adjusts the training process based on the complexity of individual samples. By categorizing data into difficulty levels and prioritizing simpler cases early in training, the model builds a strong foundation before tackling more complex records. By applying TACL to multilingual medical data, including English and Chinese clinical records, we observe significant improvements across diverse clinical tasks, including automatic ICD coding, readmission prediction and TCM syndrome differentiation. TACL not only enhances the performance of automated systems but also demonstrates the potential to unify approaches across disparate medical domains, paving the way for more accurate, scalable, and globally applicable medical text understanding solutions.

医疗文本课程学习多语言ICD编码

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