specificity {glossa} | R Documentation |
Calculate the specificity for a given logit model
Description
Calculate the specificity for a given logit model
Usage
specificity(actuals, predictedScores, threshold = 0.5)
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 predictions, convert it to a numeric vector of 1's and 0's. |
threshold |
If predicted value is above the threshold, it will be considered as an event (1), else it will be a non-event (0). Defaults to 0.5. |
Details
This function was obtained from the InformationValue R package (https://github.com/selva86/InformationValue).
Value
The specificity of the given binary response actuals and predicted probability scores, which is, the number of observations without the event AND predicted to not have the event divided by the number of observations without the event.