ID W8: Nearest-Neighbor-Based Active Learning for Rare Category Detection Jingrui He, Jaime Carbonell How to Find NIPS? Bad News · No Labeled Examples · NIPS are Rare Classes · Class Priors are Known · Majority Class is Smooth · Rare Classes are Clustered Good News 6% of the labeled points needed by random sampling 200 190 180 170 160 150 140 130 120 120 140 160 180 200 220 200 190 180 170 160 150 140 130 120 120 140 160 180 200 220 Local Density Difference in Density NIPS Found!