pamr.confusion {pamr} | R Documentation |
A function giving a table of true versus predicted values, from a nearest shrunken centroid fit.
pamr.confusion(fit, threshold, extra=TRUE)
fit |
The result of a call to pamr.train or pamr.cv |
threshold |
The desired threshold value |
extra |
If TRUE, class confusion rates are also computed |
pamr.confusion
Gives a cross-tabulation of true versus
predicted classes for the fit returned by pamr.train or pamr.cv,
at the specified threshold.
Trevor Hastie, Robert Tibshirani, Balasubramanian Narasimhan, and Gilbert Chu
set.seed(120) x <- matrix(rnorm(1000*20),ncol=20) y <- sample(c(1:4),size=20,replace=TRUE) mydata <- list(x=x,y=y) mytrain <- pamr.train(mydata) mycv <- pamr.cv(mytrain,mydata) pamr.confusion(mytrain, threshold=2) pamr.confusion(mycv, threshold=2)