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新的一致性损失函数改进深度生存预测模型

研究人员为深度生存预测模型开发了一种新的损失函数,称为 SCL(Sigmoid Concordance Loss)。传统模型常使用似然目标函数,但其与评估生存预测的关键指标——一致性指数(C-index)——的相关性并不稳定。SCL 确保损失值下降直接对应 C-index 上升,提供了一个更稳定可靠的优化目标。在十八个数据集上的实验表明,SCL 在实现与标准似然损失相当的区分度同时,在训练过程中保持了损失与 C-index 之间的强相关性。 AI

影响 为深度生存模型提供了更可靠的优化目标,有望提高其性能和训练效率。

排序理由 学术论文,详细介绍了一种用于深度生存预测模型的新损失函数。[lever_c_demoted from research: ic=1 ai=1.0]

在 arXiv stat.ML 阅读 →

AI 生成摘要 · Google Gemini · 来自 1 个来源。 我们如何撰写摘要 →

新的一致性损失函数改进深度生存预测模型

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学术论文,详细介绍了一种用于深度生存预测模型的新损失函数。[lever_c_demoted from research: ic=1 ai=1.0]
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报道来源 [1]

  1. arXiv stat.ML TIER_1 English(EN) · Meixu Chen, Kai Wang, Jing Wang ·

    Value-Monotonicity Matters: A Concordance Loss for Deep Survival Prediction

    arXiv:2607.16802v1 Announce Type: cross Abstract: Deep survival models are evaluated almost exclusively by the concordance index (C-index), yet they are commonly trained using likelihood objectives such as the Cox partial likelihood, discrete-time negative log-likelihood, and Dee…