Fair Bayes-Optimal Classifiers Under Predictive Parity
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Abstract (arXiv)
Increasing concerns about disparate effects of AI have motivated a great deal of work on fair machine learning. Existing works mainly focus on independence- and separation-based measures (e.g., demographic parity, equality of opportunity, equalized odds), while sufficiency-based measures such as predictive parity are much less studied. This paper considers predictive parity, which requires equalizing the probability of success given a positive prediction among different protected groups. We prove that, if the overall performances of different groups vary only moderately, all fair Bayes-optimal classifiers under predictive parity are group-wise thresholding rules. Perhaps surprisingly, this may not hold if group performance levels vary widely; in this case we find that predictive parity among protected groups may lead to within-group unfairness. We then propose an algorithm we call FairBayes-DPP, aiming to ensure predictive parity when our condition is satisfied. FairBayes-DPP is an adaptive thresholding algorithm that aims to achieve predictive parity, while also seeking to maximize test accuracy. We provide supporting experiments conducted on synthetic and empirical data.
Key facts. Cited by 16 papers in the map (data through 7 Oct 2026). Builds on 36 of its 61 references that are in the map. First posted on arXiv 15 May 2022.
Builds on
36 of 61 references.
References · 36
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- 2017Men Also Like Shopping: Reducing Gender Bias Amplification using Corpus-level Constraintscited by 420
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Citing papers per year: 2022: 2; 2023: 5; 2024: 4; 2025: 3; 2026: 2.
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- 2022Bias Mitigation for Machine Learning Classifiers: A Comprehensive Surveycited by 125
- 2022Fair and Optimal Classification via Post-Processingcited by 50
- 2024Can LLMs Recognize Toxicity? A Structured Investigation Framework and Toxicity Metriccited by 23
- 2023Aleatoric and Epistemic Discrimination: Fundamental Limits of Fairness Interventionscited by 19
- 2023SYNAuG: Exploiting Synthetic Data for Data Imbalance Problemscited by 12
- 2023How Far Can Fairness Constraints Help Recover From Biased Data?cited by 5
- 2024Achieving Group Fairness through Independence in Predictive Process Monitoringcited by 5
- 2023Group-blind optimal transport to group parity and its constrained variantscited by 4
- 2024FairRR: Pre-Processing for Group Fairness through Randomized Responsecited by 2
- 2024Demographic parity in regression and classification within the unawareness frameworkcited by 2
- 2025On Optimal Steering to Achieve Exact Fairnesscited by 2
- 2023An Operational Perspective to Fairness Interventions: Where and How to Intervenecited by 1
4 more
- 2025Randomized multi-class classification under system constraints: a unified approach via post-processingcited by 1
- 2025EquiPy: Sequential Fairness using Optimal Transport in Pythoncited by 0
- 2026Fair Decisions from Calibrated Scores: Achieving Optimal Classification While Satisfying Sufficiencycited by 0
- 2026A Comprehensive View of Fairness through Distributional Stabilitycited by 0
- 2026A Comprehensive View of Fairness through Distributional Stability29 Sep 2026
- 2026Fair Decisions from Calibrated Scores: Achieving Optimal Classification While Satisfying Sufficiency7 Feb 2026
- 2025Randomized multi-class classification under system constraints: a unified approach via post-processing16 Dec 2025
- 2025On Optimal Steering to Achieve Exact Fairness19 Sep 2025
- 2025EquiPy: Sequential Fairness using Optimal Transport in Python12 Mar 2025
- 2024Achieving Group Fairness through Independence in Predictive Process Monitoring6 Dec 2024
- 2024Demographic parity in regression and classification within the unawareness framework4 Sep 2024
- 2024FairRR: Pre-Processing for Group Fairness through Randomized Response12 Mar 2024
- 2024Can LLMs Recognize Toxicity? A Structured Investigation Framework and Toxicity Metric10 Feb 2024
- 2023How Far Can Fairness Constraints Help Recover From Biased Data?16 Dec 2023
- 2023Group-blind optimal transport to group parity and its constrained variants17 Oct 2023
- 2023SYNAuG: Exploiting Synthetic Data for Data Imbalance Problems2 Aug 2023
4 more
- 2023An Operational Perspective to Fairness Interventions: Where and How to Intervene3 Feb 2023
- 2023Aleatoric and Epistemic Discrimination: Fundamental Limits of Fairness Interventions27 Jan 2023
- 2022Fair and Optimal Classification via Post-Processing3 Nov 2022
- 2022Bias Mitigation for Machine Learning Classifiers: A Comprehensive Survey14 Jul 2022
- 2022Bias Mitigation for Machine Learning Classifiers: A Comprehensive Surveycited by 125
- 2022Fair and Optimal Classification via Post-Processingcited by 50
- 2024Can LLMs Recognize Toxicity? A Structured Investigation Framework and Toxicity Metriccited by 23
- 2023Aleatoric and Epistemic Discrimination: Fundamental Limits of Fairness Interventionscited by 19
- 2023SYNAuG: Exploiting Synthetic Data for Data Imbalance Problemscited by 12
- 2023How Far Can Fairness Constraints Help Recover From Biased Data?cited by 5
- 2024Achieving Group Fairness through Independence in Predictive Process Monitoringcited by 5
- 2023Group-blind optimal transport to group parity and its constrained variantscited by 4
- 2024FairRR: Pre-Processing for Group Fairness through Randomized Responsecited by 2
- 2024Demographic parity in regression and classification within the unawareness frameworkcited by 2
- 2025On Optimal Steering to Achieve Exact Fairnesscited by 2
- 2023An Operational Perspective to Fairness Interventions: Where and How to Intervenecited by 1
12 most cited of 16 All 16 (JSON)
- 2026A Comprehensive View of Fairness through Distributional Stability29 Sep 2026
- 2026Fair Decisions from Calibrated Scores: Achieving Optimal Classification While Satisfying Sufficiency7 Feb 2026
- 2025Randomized multi-class classification under system constraints: a unified approach via post-processing16 Dec 2025
- 2025On Optimal Steering to Achieve Exact Fairness19 Sep 2025
- 2025EquiPy: Sequential Fairness using Optimal Transport in Python12 Mar 2025
- 2024Achieving Group Fairness through Independence in Predictive Process Monitoring6 Dec 2024
- 2024Demographic parity in regression and classification within the unawareness framework4 Sep 2024
- 2024FairRR: Pre-Processing for Group Fairness through Randomized Response12 Mar 2024
- 2024Can LLMs Recognize Toxicity? A Structured Investigation Framework and Toxicity Metric10 Feb 2024
- 2023How Far Can Fairness Constraints Help Recover From Biased Data?16 Dec 2023
- 2023Group-blind optimal transport to group parity and its constrained variants17 Oct 2023
- 2023SYNAuG: Exploiting Synthetic Data for Data Imbalance Problems2 Aug 2023
12 newest of 16 All 16 (JSON)