somersD: somersD
In selva86/InformationValue: Performance Analysis and Companion Functions for Binary Classification Models
Description
Usage
Arguments
Details
Value
Author(s)
Examples
Description
Calculate the Somers D statistic for a given logit model
Usage
1
somersD(actuals, predictedScores)
Arguments
actuals
The actual binary flags for the response variable. It can take a numeric vector containing values of either 1 or 0, where 1 represents the 'Good' or 'Events' while 0 represents 'Bad' or 'Non-Events'.
predictedScores
The prediction probability scores for each observation. If your classification model gives the 1/0 predcitions, convert it to a numeric vector of 1's and 0's.
Details
For a given binary response actuals and predicted probability scores, Somer's D is calculated as the number of concordant pairs less number of discordant pairs divided by total number of pairs.
Value
The Somers D statistic, which tells how many more concordant than discordant pairs exist divided by total number of pairs.
Author(s)
Selva Prabhakaran selva86@gmail.com
Examples
1
2
data('ActualsAndScores')
somersD(actuals=ActualsAndScores$Actuals, predictedScores=ActualsAndScores$PredictedScores)
selva86/InformationValue documentation built on May 29, 2019, 5:55 p.m.
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Description Usage Arguments Details Value Author(s) Examples
Description
Calculate the Somers D statistic for a given logit model
Usage
1 | somersD(actuals, predictedScores)
|
Arguments
actuals |
The actual binary flags for the response variable. It can take a numeric vector containing values of either 1 or 0, where 1 represents the 'Good' or 'Events' while 0 represents 'Bad' or 'Non-Events'. |
predictedScores |
The prediction probability scores for each observation. If your classification model gives the 1/0 predcitions, convert it to a numeric vector of 1's and 0's. |
Details
For a given binary response actuals and predicted probability scores, Somer's D is calculated as the number of concordant pairs less number of discordant pairs divided by total number of pairs.
Value
The Somers D statistic, which tells how many more concordant than discordant pairs exist divided by total number of pairs.
Author(s)
Selva Prabhakaran selva86@gmail.com
Examples
1 2 | data('ActualsAndScores')
somersD(actuals=ActualsAndScores$Actuals, predictedScores=ActualsAndScores$PredictedScores)
|
R Package Documentation
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Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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