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• W2121879531 abstract "We propose a learning setting in which unlabeled data is free, and the cost of a label depends on its value, which is not known in advance. We study binary classification in an extreme case, where the algorithm only pays for negative labels. Our motivation are applications such as fraud detection, in which investigating an honest transaction should be avoided if possible. We term the setting auditing, and consider the auditing complexity of an algorithm: the number of negative labels the algorithm requires in order to learn a hypothesis with low relative error. We design auditing algorithms for simple hypothesis classes (thresholds and rectangles), and show that with these algorithms, the auditing complexity can be significantly lower than the active label complexity. We also show a general competitive approach for learning with outcome-dependent costs." @default.
• W2121879531 created "2016-06-24" @default.
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• W2121879531 date "2013-12-05" @default.
• W2121879531 modified "2023-09-23" @default.
• W2121879531 title "Auditing: Active Learning with Outcome-Dependent Query Costs" @default.
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