Creating custom metric sets
The yardstick
package also provides the ability to create custom sets of model metrics. In cases where the cost of obtaining false negative errors is different from the cost of false positive errors, it may be important to examine a specific set of performance metrics.
Instead of calculating accuracy, sensitivity, and specificity separately, you can create your own metric function that calculates all three at the same time.
In this exercise, you will use the results from your logistic regression model, telecom_results
, to calculate a custom set of performance metrics. You will also use a confusion matrix to calculate all available binary classification metrics in tidymodels
all at once.
The telecom_results
tibble has been loaded into your session.
This exercise is part of the course
Modeling with tidymodels in R
Hands-on interactive exercise
Have a go at this exercise by completing this sample code.
# Create a custom metric function
telecom_metrics <- ___(___, ___, ___)