what is the scoring variable called for aucpr?

Question

i am trying to conduct a grid search for an imbalanced problem however i cannot find the aucpr (area under curve precision recall) scoring metric for gridsearch. e.g. you have 'roc-auc', 'neg-brier-loss' but what is the respective aucpr scoring method?

Answer 1

scikit-learn has a summary of the precision-recall curve called average_precision_score, which is similar to the aucpr, but is actually a rectangular approximation, see https://datascience.stackexchange.com/questions/52130/about-sklearn-metrics-average-precision-score-documentation