HMM与CRF对脓毒症早期预测的比较分析

Saman Noorzadeh, Shahrooz Faghihroohi, M. Zarei
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引用次数: 1

摘要

本研究旨在根据Physionet challenge 2019公布的数据,准确检测和预测ICU患者的脓毒症。脓毒症的预测有助于早期干预,从而降低死亡率。隐马尔可夫模型(HMM)在特征独立假设下应用;然而,为了解决这个问题,我们实现了线性链条件随机场(CRF),并将结果与HMM进行了比较。结果表明,CRF在脓毒症的早期预测中优于HMM。作者团队IMSAT在上述挑战中以0.19的效用得分排名第50位。
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A Comparative Analysis of HMM and CRF for Early Prediction of Sepsis
This study aims to detect and predict sepsis precisely in ICU patients according to the data published for Physionet challenge 2019. Sepsis prediction can help in early intervention and therefore less mortality rate. Hidden Markov Model (HMM) is applied with the independence assumption of features; however, to tackle this problem, Linear-chain conditional random field (CRF) is implemented and the results are compared to HMM. The results show that CRF outperforms HMM in the early prediction of sepsis. The team of the authors, named IMSAT, ranked 50 in the mentioned challenge by gaining a utility score of 0.19.
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