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Impact of Systematic Factors on the Outbreak Outcomes of the Novel COVID-19 Disease in China: Factor Analysis Study

Impact of Systematic Factors on the Outbreak Outcomes of the Novel COVID-19 Disease in China: Factor Analysis Study

The following equation shows how the predicted value of the machine learning model was calculated: yi = ybase + f(xi1) + f (xi2) + … + f(xi N)        (2) In this equation, the ith sample was defined as xi, the jth feature of the ith sample was defined as xij, the predicted value of the machine learning model for the sample was yi, and the reference value of the model (ie, the mean value of the target sample variable) was defined as ybase.

Zicheng Cao, Feng Tang, Cai Chen, Chi Zhang, Yichen Guo, Ruizhen Lin, Zhihong Huang, Yi Teng, Ting Xie, Yutian Xu, Yanxin Song, Feng Wu, Peipei Dong, Ganfeng Luo, Yawen Jiang, Huachun Zou, Yao-Qing Chen, Litao Sun, Yuelong Shu, Xiangjun Du

J Med Internet Res 2020;22(11):e23853