arXiv:2512.20669cs.LGcs.AI2025-12

用生成模型合成真实心脏康复数据,提升风险预测准确率。

Improving Cardiac Risk Prediction Using Data Generation Techniques

  • 基于条件变分自编码器生成符合临床规律的合成病历数据。
  • 合成数据使分类器在心脏风险预测上表现优于现有深度学习方法。
  • 适合医疗数据稀缺场景下的模型训练与减少侵入性检测。

心脏康复是一个多阶段、需个体化决策并涉及多学科协作的临床过程,其顺序性和适应性使其可建模为业务流程,便于分析。然而,该领域研究受限于真实医疗数据库的固有缺陷:数据因经济成本和采集时间而稀缺;大量记录不适用于特定分析目的;且存在高比例缺失值,因并非所有患者都接受相同检查。为此,本文提出一种基于条件变分自编码器(CVAE)的架构,用于生成与真实观察一致的合成临床记录。核心目标是扩充数据规模与多样性,以提升心脏风险预测模型性能,并减少潜在危险的诊断程序(如运动负荷试验)。结果表明,该架构能生成连贯且真实的合成数据,使用后显著提升了各类分类器在心脏风险检测中的准确率,优于当前最先进的合成数据生成深度学习方法。

原文摘要 · Abstract (English)

Cardiac rehabilitation constitutes a structured clinical process involving multiple interdependent phases, individualized medical decisions, and the coordinated participation of diverse healthcare professionals. This sequential and adaptive nature enables the program to be modeled as a business process, thereby facilitating its analysis. Nevertheless, studies in this context face significant limitations inherent to real-world medical databases: data are often scarce due to both economic costs and the time required for collection; many existing records are not suitable for specific analytical purposes; and, finally, there is a high prevalence of missing values, as not all patients undergo the same diagnostic tests. To address these limitations, this work proposes an architecture based on a Conditional Variational Autoencoder (CVAE) for the synthesis of realistic clinical records that are coherent with real-world observations. The primary objective is to increase the size and diversity of the available datasets in order to enhance the performance of cardiac risk prediction models and to reduce the need for potentially hazardous diagnostic procedures, such as exercise stress testing. The results demonstrate that the proposed architecture is capable of generating coherent and realistic synthetic data, whose use improves the accuracy of the various classifiers employed for cardiac risk detection, outperforming state-of-the-art deep learning approaches for synthetic data generation.

心脏风险数据生成医疗AICVAE

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