一個二維函數I具有一些真正的和預測的標籤矢量化中的R
truth <- factor(c("+","+","-","+","+","-","-","-","-","-"))
pred <- factor(c("+","+","-","-","+","+","-","-","+","-"))
和我想建立混淆矩陣。 我有對一元的元素
f <- function(x,y){ sum(y==pred[truth == x])}
但是作品,當我把它應用到產品外,打造矩陣R的函數似乎不高興。
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中推薦的策略是什麼?
我總是可以通過更高階的東西,但這似乎很笨拙。
我會發布更高階的東西以及。 – nicolas