Look Ma, No Hands: Analyzing the Monotonic Feature Abstraction for Text Classification Poster ID: M3 Doug Downey and Oren Etzioni Classification without any hand-labeled examples? Semi-supervised Monotonic Features Labeled & unlabeled data Only unlabeled data, and P(class | x1) monotonic Widely applicable problem structure PAC Learn from unlabeled data alone In Document Classification, worth 160 "free" training examples Supervised Labeled data