Barplot of information values to compare dicriminator of the transformed variables.
An object of class
Character to specify the plot type, see below. Either
Further arguments to be passed to the barplot function.
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.
type=="woes" for each variable the relative frequencies of all transformed levels are plotted.
No value is returned.
Good, I. (1950): Probability and the Weighting of Evidences. Charles Griffin, London.
Kullback, S. (1959): Information Theory and Statistics. Wiley, New York.
# see examples in ?woe
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