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arXiv 1807.03633cs.AI
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基于多值规则集的可解释患者死亡率预测

Interpretable Patient Mortality Prediction with Multi-value Rule Sets

Tippie College of Business \ of Iowa;Carver College of Medicine\ of Iowa;School of Business\ Island College;College of Dentistry University of Illinois at Chicago

Tong Wang, Veerajalandhar Allareddy, Sankeerth Rampa, Veerasathpurush Allareddy

摘要:

本文提出了一个多值规则集(MRS)模型,用于预测住院患者的死亡率。与基于单值规则的规则集相比,MRS采用了更一般化的关联规则形式,允许条件中有多个值。在捕获和描述数据模式方面,这种形式的规则比经典的单值规则更加简洁。我们的公式还追求更高的特征利用率,这降低了数据汇集和存储的可能成本。我们提出了一个贝叶斯框架,制定MRS模型,并提出了一个有效的推理方法,学习最大的\emph{a posteriori},结合理论接地边界迭代减少搜索空间,提高搜索效率。实验表明,我们的模型能够实现更好的性能比基线方法,包括目前的系统所使用的医院。

英文摘要:

We propose a Multi-vAlue Rule Set (MRS) model for in-hospital predicting patient mortality. Compared to rule sets built from single-valued rules, MRS adopts a more generalized form of association rules that allows multiple values in a condition. Rules of this form are more concise than classical single-valued rules in capturing and describing patterns in data. Our formulation also pursues a higher efficiency of feature utilization, which reduces possible cost in data collection and storage. We propose a Bayesian framework for formulating a MRS model and propose an efficient inference method for learning a maximum \emph{a posteriori}, incorporating theoretically grounded bounds to iteratively reduce the search space and improve the search efficiency. Experiments show that our model was able to achieve better performance than baseline method including the current system used by the hospital.

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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