On Multilabel Classification and Ranking with Partial Feedback

author: Francesco Orabona, Toyota Technological Institute at Chicago
published: Jan. 14, 2013,   recorded: December 2012,   views: 69
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Description

We present a novel multilabel/ranking algorithm working in partial information settings. The algorithm is based on 2nd-order descent methods, and relies on upper-confidence bounds to trade-off exploration and exploitation. We analyze this algorithm in a partial adversarial setting, where covariates can be adversarial, but multilabel probabilities are ruled by (generalized) linear models. We show O(T1/2logT) regret bounds, which improve in several ways on the existing results. We test the effectiveness of our upper-confidence scheme by contrasting against full-information baselines on real-world multilabel datasets, often obtaining comparable performance.

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Download slides icon Download slides: machine_orabona_ranking_01.pdf (361.7 KB)

Download article icon Download article: machine_orabona_ranking_01.pdf (439.0 KB)


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