ROC-AUC vs PR-AUC: Why Rare Events Need More Than One Metric

Imagine you are building a system to monitor social media during a wildfire. Thousands of posts appear every hour. Most are ordinary discussions, but a small number may contain important information about an evacuation, a blocked road, or an emerging hazard. Your classifier is designed to flag potentially relevant posts for further review. You... Weiterlesen: ROC-AUC vs PR-AUC: Why Rare Events Need More Than One Metric