Fast-RCM: Fast Tree-Based Unsupervised Rare-Class Mining

Rare classes are usually hidden in an imbalanced dataset with the majority of the data examples from major classes. Rare-class mining (RCM) aims at extracting all the data examples belonging to rare classes. Most of the existing approaches for RCM require a certain amount of labeled data examples as input. However, they are ineffective in practice since requesting label information from domain exp...