Barplot of information values to compare dicriminator of the transformed variables.
# S3 method for woe
plot(x, type = c("IV", "woes"), ...)
No value is returned.
An object of class woe
.
Character to specify the plot type, see below. Either "IV"
(default) or "woes"
.
Further arguments to be passed to the barplot function.
Gero Szepannek
For type=="IV"
a barplot of information values for all transformed variables.
A thumb rule of interpretation is that Values above 0.3 are considered as strongly discrimative where values below 0.02 are considered to characterize unpredictive variables.
For type=="woes"
for each variable the relative frequencies of all transformed levels are plotted.
Good, I. (1950): Probability and the Weighting of Evidences. Charles Griffin, London.
Kullback, S. (1959): Information Theory and Statistics. Wiley, New York.
woe
, predict.woe