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

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arxiv 1903.04561 v2 pith:2YLB5MEY submitted 2019-03-11 cs.LG cs.CLstat.ML

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

classification cs.LG cs.CLstat.ML
keywords biasunintendedmetricsexistinggroupsintroducelargenuanced
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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