Plot information values
Barplot of information values to compare dicriminator of the transformed variables.
## S3 method for class 'woe'
plot(x, type = c("IV", "woes"), ...)x |
An object of class |
type |
Character to specify the plot type, see below. Either |
... |
Further arguments to be passed to the barplot function. |
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.
No value is returned.
Gero Szepannek
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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