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Nuanced Metrics for Measuring Unintended Bias with Real Data for Text Classification

2019/03/11 by Daniel Borkan, Borkan, Daniel, Lucas Dixon +7 · 62 citations
Computer Science · Mathematics · Social Sciences · #Hate Speech and Cyberbullying Detection #Misinformation and Its Impacts #cs.CL #cs.LG #stat.ML

paper · pdf · doi:10.48550/arxiv.1903.04561

Updated to fix typo in Equation 4

arxiv created 2019/05/08 · arxiv updated 2019/05/09

Abstract

Unintended bias in Machine Learning can manifest as systemic differences in performance for different demographic groups, potentially compounding existing challenges to fairness in society at large. In this paper, we introduce a suite of threshold-agnostic metrics that provide a nuanced view of this unintended bias, by considering the various ways that a classifier's score distribution can vary across designated groups. We also introduce a large new test set of online comments with crowd-sourced annotations for identity references. We use this to show how our metrics can be used to find new and potentially subtle unintended bias in existing public models.

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