Wesley To
Wesley To
Programming language:Whatever
2021-07-13 00:25:33
0
Q:

random forest roc curve r

dreamcrash
dreamcrash
Code: Whatever
2021-08-08 14:45:25 
data(iris)
library(randomForest)
library(pROC)
set.seed(1000)
# 3-class in response variable
rf = randomForest(Species~., data = iris, ntree = 100)
# predict(.., type = 'prob') returns a probability matrix
multiclass.roc(iris$Species, predict(rf, iris, type = 'prob'))

##shout out to Yin Zhao for the clear explanation
##https://www.researchgate.net/post/How_to_deal_with_multiple_class_ROC_analysis_in_R_pROC_package
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