Special method for model performance evaluation. Counts number of tp, tn, fp, fn for each subgroup (and therefore potentially distinct cutoff), sums afterwards.
group_model_performance(x, protected, cutoff, performance_metric)| x | object created with |
|---|---|
| protected | factor, vector with levels as subgroups |
| cutoff | vector of thresholds for each subgroup |
| performance_metric | name of performance metric |
score in performance metric between 0 and 1