一个二维函数I具有一些真正的和预测的标签矢量化中的R
truth <- factor(c("+","+","-","+","+","-","-","-","-","-"))
pred <- factor(c("+","+","-","-","+","+","-","-","+","-"))
和我想建立混淆矩阵。 我有对一元的元素
f <- function(x,y){ sum(y==pred[truth == x])}
但是作品,当我把它应用到产品外,打造矩阵R的函数似乎不高兴。
outer(levels(truth), levels(truth), f)
Error in outer(levels(x), levels(x), f) :
dims [product 4] do not match the length of object [1]
在R中推荐的策略是什么?
我总是可以通过更高阶的东西,但这似乎很笨拙。
我会发布更高阶的东西以及。 – nicolas