R Graphical Manual

Last data update: 2014.03.03

R: Classification Confusion Matrix and Accuracy

confusion

R Documentation

Classification Confusion Matrix and Accuracy

Compute classification confusion matrix and accuracy

confusion(obs, pred)
confusion2acc(ct)

`obs`	A vector of observed classes.
`pred`	A vector of predicted classes.
`ct`	A table retruned from `confusion`

confusion return a matrix of cross classification counts. confusion return a overall classification accuracy.

Shengqiao Li<lishengqiao@yahoo.com>

  obs<- rep(0:1, each =5);
  pre<- c(obs[3:10], obs[1:2])
  confusion(obs, pre)
  confusion2acc(  confusion(obs, pre))