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我使用的是randomforest来分析600行21个变量的训练集。随机森林不生成err.rate
# Construct Random Forest Model
rfmodel <- randomForest(default ~ .,
data = train.df,
ntree = 500,
mtry = 4,
importance = TRUE,
LocalImp = TRUE,
replace = FALSE)
print(rfmodel)
这生成以下内容:
> rfmodel <- randomForest(default ~ .,
+ data = train.df,
+ ntree = 500,
+ mtry = 4,
+ importance = TRUE,
+ LocalImp = TRUE,
+ replace = FALSE)
> Warning message:
> In randomForest.default(m, y, ...) :
> The response has five or fewer unique values. Are you sure you want to do
> regression?
> print(rfmodel)
>Call:
randomForest(formula = default ~ ., data = train.df, ntree = 500, mtry = 4, importance = TRUE, LocalImp = TRUE, replace = FALSE)
Type of random forest: regression
Number of trees: 500
No. of variables tried at each split: 4
Mean of squared residuals: 0.1577596
% Var explained: 23.89
这缺少某种原因混淆矩阵。当我尝试生成err.rate,它给了我这样的:
头(rfmodel $ err.rate)
NULL
所以我的问题是,我在这里做错了什么?我需要混淆矩阵与OOB和0和1基于“默认”这是可观察的变量。 – user7273726
不要在评论中添加问题 - 编辑问题。 –