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arXiv 2104.07894cs.LGcs.CL
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医学密码预测的可信性和合理性解释

Faithful and Plausible Explanations of Medical Code Predictions

Johns Hopkins University(约翰斯·霍普金斯大学)

Zach Wood-Doughty, Isabel Cachola, Mark Dredze

摘要:

提供出色预测性能的机器学习模型通常缺乏支持集成人机决策所需的可解释性。在临床医学和其他高风险环境中,领域专家可能不愿意在没有解释的情况下信任模型预测。可解释人工智能的工作必须在两个不同的轴上平衡相互竞争的目标:1)解释必须平衡对模型决策的忠实性和对领域专家的可解释性。2)领域专家希望对个体预测进行局部解释,并对总体行为进行全局解释。我们建议训练一个代理模型,模仿训练模型的行为,并提供对这些权衡的细粒度控制。我们评估了将ICD代码分配给临床笔记的任务,以证明代理模型的解释是忠实的,并复制了训练的模型行为。

英文摘要:

Machine learning models that offer excellent predictive performance often lack the interpretability necessary to support integrated human machine decision-making. In clinical medicine and other high-risk settings, domain experts may be unwilling to trust model predictions without explanations. Work in explainable AI must balance competing objectives along two different axes: 1) Explanations must balance faithfulness to the model's decision-making with their plausibility to a domain expert. 2) Domain experts desire local explanations of individual predictions and global explanations of behavior in aggregate. We propose to train a proxy model that mimics the behavior of the trained model and provides fine-grained control over these trade-offs. We evaluate our approach on the task of assigning ICD codes to clinical notes to demonstrate that explanations from the proxy model are faithful and replicate the trained model behavior.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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