OptimalCutoff尤登指数计算 是一种用于评估分类模型性能的指标。它基于模型的预测概率和真实标签之间的关系,通过不同的阈值来确定正负样本的分类结果。 OptimalCutoff尤登指数计算的分类模型可以是任何类型的模型,包括前端开发、后端开发、软件测试、数据库、服务器运维、云原生、网络通信、网络安全、音视频、多媒体处理、人...
library(survival) head(bc) bc<-within(bc,{ TDs<-NA TDs[TD==0]<-0 TDs[TD!=0]<-1}) bc<-within(bc,{ Tstage_2<-NA Tstage_2[Tstage<3]<-1 Tstage_2[Tstage>2]<-2}) w <- which(bc$TD==0) cd <- bc[-w,] head(cd) library(survivalROC) cutoff <- 12*4 cut= survival...
We determine conditions on the undercapacity penalty function that ensure the existence of optimal cutoff strategies when the cost of completing a project is exponentially distributed. A by-product of the proof is an algorithm for determining the optimal strategy and its cost....
CatPredi is a package of R functions that allows the user to categorize a continuous predictor variable in a univariate or multiple logistic regression model based on the maximization of the AUC. It provides the optimal location of cut poi...
Aim: To identify the optimal cutoff of mean corpuscular volume (MCV) for screening of alpha-thalassemia 1 trait. Methods: The database of pregnant women who attended antenatal care clinic at Department of Obstetrics and Gynecology, Chiang Mai University during January 1st, 2015 to December 31st,...
粗浅总结,请多批评~ 发布于 2022-05-23 16:18 总结 指标 大数据风控 还没有评论,发表第一个评论吧 打开知乎App 在「我的页」右上角打开扫一扫 其他扫码方式:微信 下载知乎App 开通机构号 无障碍模式 验证码登录 密码登录 中国+86 登录/注册 其他方式登录 ...
OBJECTIVE: The objective of this study was to determine the optimal cutoff level of serum squamous cell carcinoma antigen (SCC-Ag) to detect recurrent cervical squamous cell carcinoma during post-treatment surveillance. METHODS: Between January 2000 and July 2014, a total of 158 women with cervical...
In mine planning problems, cutoff grade optimization defines a threshold at every time period such that material above this value is processed, and the rest is considered waste. In orebodies with multiple minerals, which occur in practice, the natural extension is to consider a cutoff surface. ...
The optimal cutoff level of breath CO to assess actual smoking status was 10 ppm in patients with stable asthma and 11 ppm in patients with stable COPD. In patients with asthma and COPD, breath CO levels were potentially influenced by underlying airway inflammation, suggesting misclassification in...
the following physical function values were selected as optimal cutoff points for 6MWD < 300 m and < 400 m: handgrip strength, 18.9 kg and 21.9 kg, respectively; QIS, 35.0% BM and 40.0% BM, respectively; OLST, 9.1 s and 12.0 s, respectively; and 5STS, 9.5 s and 8.8 s,...