Aequitas: A Bias and Fairness Audit Toolkit
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Abstract (arXiv)
Recent work has raised concerns on the risk of unintended bias in AI systems being used nowadays that can affect individuals unfairly based on race, gender or religion, among other possible characteristics. While a lot of bias metrics and fairness definitions have been proposed in recent years, there is no consensus on which metric/definition should be used and there are very few available resources to operationalize them. Therefore, despite recent awareness, auditing for bias and fairness when developing and deploying AI systems is not yet a standard practice. We present Aequitas, an open source bias and fairness audit toolkit that is an intuitive and easy to use addition to the machine learning workflow, enabling users to seamlessly test models for several bias and fairness metrics in relation to multiple population sub-groups. Aequitas facilitates informed and equitable decisions around developing and deploying algorithmic decision making systems for both data scientists, machine learning researchers and policymakers.
Key facts. Cited by 147 papers in the map (data through 14 Oct 2026). First posted on arXiv 14 Nov 2018.
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Citing papers per year: 2021: 18; 2022: 26; 2023: 26; 2024: 39; 2025: 22; 2026: 16.
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- 2021Trustworthy AI: From Principles to Practicescited by 207
- 2023Auditing large language models: a three-layered approachcited by 137
- 2021Trustworthy AI: A Computational Perspectivecited by 93
- 2023Fast Model Debias with Machine Unlearningcited by 72
- 2024Fairness in Large Language Models: A Taxonomic Surveycited by 58
- 2021Fair Preprocessing: Towards Understanding Compositional Fairness of Data Transformers in Machine Learning Pipelinecited by 49
- 2023Understanding accountability in algorithmic supply chainscited by 40
- 2022Exploring How Machine Learning Practitioners (Try To) Use Fairness Toolkitscited by 34
- 2022A Validity Perspective on Evaluating the Justified Use of Data-driven Decision-making Algorithmscited by 30
- 2022Summarizing Patients Problems from Hospital Progress Notes Using Pre-trained Sequence-to-Sequence Modelscited by 30
- 2024Farsight: Fostering Responsible AI Awareness During AI Application Prototypingcited by 28
- 2022FairGBM: Gradient Boosting with Fairness Constraintscited by 25
38 more
- 2021Testing Group Fairness via Optimal Transport Projectionscited by 23
- 2022Debiasing Methods for Fairer Neural Models in Vision and Language Research: A Surveycited by 22
- 2022The four-fifths rule is not disparate impact: a woeful tale of epistemic trespassing in algorithmic fairnesscited by 21
- 2022De-biasing "bias" measurementcited by 20
- 2023Statistical Inference for Fairness Auditingcited by 20
- 2023Bias and Fairness in Chatbots: An Overviewcited by 20
- 2021Conformity Assessments and Post-market Monitoring: A Guide to the Role of Auditing in the Proposed European AI Regulationcited by 19
- 2021A Framework for Fairness: A Systematic Review of Existing Fair AI Solutionscited by 18
- 2023The Possibility of Fairness: Revisiting the Impossibility Theorem in Practicecited by 18
- 2021Promoting Fairness through Hyperparameter Optimizationcited by 17
- 2021Towards the Right Kind of Fairness in AIcited by 15
- 2024FairAIED: Navigating Fairness, Bias, and Ethics in Educational AI Applicationscited by 15
- 2021Learning from Multiple Noisy Partial Labelerscited by 14
- 2022DC-Check: A Data-Centric AI checklist to guide the development of reliable machine learning systemscited by 14
- 2023A Review of the Role of Causality in Developing Trustworthy AI Systemscited by 14
- 2022System Cards for AI-Based Decision-Making for Public Policycited by 13
- 2021Demographic Fairness in Biometric Systems: What do the Experts say?cited by 12
- 2022A Sandbox Tool to Bias(Stress)-Test Fairness Algorithmscited by 12
- 2022Towards a multi-stakeholder value-based assessment framework for algorithmic systemscited by 12
- 2024OxonFair: A Flexible Toolkit for Algorithmic Fairnesscited by 12
- 2024Establishing and Evaluating Trustworthy AI: Overview and Research Challengescited by 12
- 2021SoK: Machine Learning Governancecited by 10
- 2023Bound by the Bounty: Collaboratively Shaping Evaluation Processes for Queer AI Harmscited by 10
- 2024Auditing of AI: Legal, Ethical and Technical Approachescited by 10
- 2021fairmodels: A Flexible Tool For Bias Detection, Visualization, And Mitigationcited by 9
- 2024Bring Your Own Prompts: Use-Case-Specific Bias and Fairness Evaluation for LLMscited by 9
- 2021BeFair: Addressing Fairness in the Banking Sectorcited by 8
- 2021An Empirical Comparison of Bias Reduction Methods on Real-World Problems in High-Stakes Policy Settingscited by 8
- 2022VisCUIT: Visual Auditor for Bias in CNN Image Classifiercited by 8
- 2022Recommendations on test datasets for evaluating AI solutions in pathologycited by 8
- 2024ABCFair: an Adaptable Benchmark approach for Comparing Fairness Methodscited by 8
- 2024Feature Responsiveness Scores: Model-Agnostic Explanations for Recoursecited by 8
- 2022Fairness Implications of Encoding Protected Categorical Attributescited by 7
- 2022Bias and unfairness in machine learning models: a systematic literature reviewcited by 7
- 2023Fairness Evaluation in Text Classification: Machine Learning Practitioner Perspectives of Individual and Group Fairnesscited by 7
- 2023Toward Operationalizing Pipeline-aware ML Fairness: A Research Agenda for Developing Practical Guidelines and Toolscited by 7
- 2024Fairness in Large Language Models in Three Hourscited by 7
- 2024Secure and Confidential Certificates of Online Fairnesscited by 7
50 most cited of 147 All 147 (JSON)
- 2026Evaluating the Effects of Prompt Perturbation on Bias and Hallucination in Large Language Models18 Sep 2026
- 2026Instability Floors: Separating Bias from Noise in Fairness Audits of Clinical LLM Agents with FairMedAgent2 Sep 2026
- 2026Counterfactual Bias Testing for Application Tracking System27 Aug 2026
- 2026FairMon: A Tool for Monitoring and Visualizing Algorithmic Fairness7 Aug 2026
- 2026Identifying Harm in Personalized, Generative AI Systems Requires User-Centered Auditing at the Interaction Level7 Aug 2026
- 2026Certified in Theory, Broken in Practice: Assumption Gaps in Cryptographic Model Certification23 Jul 2026
- 2026FairSelect: A Systematic Evaluation of Multi-Level and Intersectional Algorithmic Fairness9 Jul 2026
- 2026Beyond Third-Person Audits: Situated Interaction Auditing for User-Centered LLM Bias Research10 Jun 2026
- 2026TabChange: Precise Attribute Changes in Tabular Data30 May 2026
- 2026RISED: A Pre-Deployment Evaluation Framework for High-Stakes AI Decision-Support Systems, with Application to Healthcare13 May 2026
- 2026Fairness of Explanations in Artificial Intelligence (AI): A Unifying Framework, Axioms, and Future Direction toward Responsible AI11 May 2026
- 2026MIFair: A Mutual-Information Framework for Intersectionality and Multiclass Fairness30 Apr 2026
38 more
- 2026FairLogue: A Toolkit for Intersectional Fairness Analysis in Clinical Machine Learning Models6 Apr 2026
- 2026Empowering Affected Individuals to Shape AI Fairness Assessments: Processes, Criteria, and Tools27 Jan 2026
- 2026Nishpaksh: TEC Standard-Compliant Framework for Fairness Auditing and Certification of AI Models23 Jan 2026
- 2026The Machine Learning Canvas: Empirical Findings on Why Strategy Matters More Than AI Code Generation5 Jan 2026
- 2025A Gray Literature Study on Fairness Requirements in AI-enabled Software Engineering8 Dec 2025
- 2025Machine Learning and Public Health: Identifying and Mitigating Algorithmic Bias through a Systematic Review16 Oct 2025
- 2025Cost Efficient Fairness Audit Under Partial Feedback4 Oct 2025
- 2025Partial Identification Approach to Counterfactual Fairness Assessment30 Sep 2025
- 2025"I think this is fair": Uncovering the Complexities of Stakeholder Decision-Making in AI Fairness Assessment22 Sep 2025
- 2025JustEva: A Toolkit to Evaluate LLM Fairness in Legal Knowledge Inference15 Sep 2025
- 2025PromptGuard: An Orchestrated Prompting Framework for Principled Synthetic Text Generation for Vulnerable Populations using LLMs with Enhanced Safety, Fairness, and Controllability10 Sep 2025
- 2025Concolic Testing on Individual Fairness of Neural Network Models8 Sep 2025
- 2025Reinforcement-Guided Hyper-Heuristic Hyperparameter Optimization for Fair and Explainable Spiking Neural Network-Based Financial Fraud Detection23 Aug 2025
- 2025Measurement as Bricolage: Examining How Data Scientists Construct Target Variables for Predictive Modeling Tasks3 Jul 2025
- 2025GFLC: Graph-based Fairness-aware Label Correction for Fair Classification18 Jun 2025
- 2025Fair for a few: Improving Fairness in Doubly Imbalanced Datasets17 Jun 2025
- 2025Advances in LLMs with Focus on Reasoning, Adaptability, Efficiency and Ethics14 Jun 2025
- 2025From Bias to Accountability: How the EU AI Act Confronts Challenges in European GeoAI Auditing23 May 2025
- 2025SHAP-based Explanations are Sensitive to Feature Representation13 May 2025
- 2025FairZK: A Scalable System to Prove Machine Learning Fairness in Zero-Knowledge12 May 2025
- 2025Quantitative Auditing of AI Fairness with Differentially Private Synthetic Data30 Apr 2025
- 2025FairPlay: A Collaborative Approach to Mitigate Bias in Datasets for Improved AI Fairness22 Apr 2025
- 2025Simulation-Driven Balancing of Competitive Game Levels with Reinforcement Learning24 Mar 2025
- 2025On the Origins of Sampling Bias: Implications on Fairness Measurement and Mitigation23 Mar 2025
- 2025Towards Responsible AI in Education: Hybrid Recommendation System for K-12 Students Case Study27 Feb 2025
- 2025LangFair: A Python Package for Assessing Bias and Fairness in Large Language Model Use Cases6 Jan 2025
- 2024INFELM: In-depth Fairness Evaluation of Large Text-To-Image Models28 Dec 2024
- 2024Trustworthy artificial intelligence in the energy sector: Landscape analysis and evaluation framework25 Nov 2024
- 2024Establishing and Evaluating Trustworthy AI: Overview and Research Challenges15 Nov 2024
- 2024A Review of Fairness and A Practical Guide to Selecting Context-Appropriate Fairness Metrics in Machine Learning10 Nov 2024
- 2024Feature Responsiveness Scores: Model-Agnostic Explanations for Recourse29 Oct 2024
- 2024Hey GPT, Can You be More Racist? Analysis from Crowdsourced Attempts to Elicit Biased Content from Generative AI20 Oct 2024
- 2024Efficient Fairness-Performance Pareto Front Computation26 Sep 2024
- 2024ABCFair: an Adaptable Benchmark approach for Comparing Fairness Methods25 Sep 2024
- 2024Secure and Confidential Certificates of Online Fairness17 Sep 2024
- 2024The 20 questions game to distinguish large language models16 Sep 2024
- 2024Trustworthy and Responsible AI for Human-Centric Autonomous Decision-Making Systems28 Aug 2024
- 2024Detecting Interpretable Subgroup Drifts26 Aug 2024
50 newest of 147 All 147 (JSON)
- 2023Fast Model Debias with Machine Unlearningcited by 72
- 2023Fast Model Debias with Machine Unlearning19 Oct 2023
- 2021Trustworthy AI: From Principles to Practicescited by 207
- 2023Auditing large language models: a three-layered approachcited by 137
- 2021Trustworthy AI: A Computational Perspectivecited by 93
- 2024Fairness in Large Language Models: A Taxonomic Surveycited by 58
- 2021Fair Preprocessing: Towards Understanding Compositional Fairness of Data Transformers in Machine Learning Pipelinecited by 49
- 2023Understanding accountability in algorithmic supply chainscited by 40
- 2022Exploring How Machine Learning Practitioners (Try To) Use Fairness Toolkitscited by 34
- 2022A Validity Perspective on Evaluating the Justified Use of Data-driven Decision-making Algorithmscited by 30
- 2022Summarizing Patients Problems from Hospital Progress Notes Using Pre-trained Sequence-to-Sequence Modelscited by 30
- 2024Farsight: Fostering Responsible AI Awareness During AI Application Prototypingcited by 28
- 2022FairGBM: Gradient Boosting with Fairness Constraintscited by 25
- 2021Testing Group Fairness via Optimal Transport Projectionscited by 23
12 most cited of 143 All 143 (JSON)
- 2026Evaluating the Effects of Prompt Perturbation on Bias and Hallucination in Large Language Models18 Sep 2026
- 2026Instability Floors: Separating Bias from Noise in Fairness Audits of Clinical LLM Agents with FairMedAgent2 Sep 2026
- 2026Counterfactual Bias Testing for Application Tracking System27 Aug 2026
- 2026FairMon: A Tool for Monitoring and Visualizing Algorithmic Fairness7 Aug 2026
- 2026Identifying Harm in Personalized, Generative AI Systems Requires User-Centered Auditing at the Interaction Level7 Aug 2026
- 2026Certified in Theory, Broken in Practice: Assumption Gaps in Cryptographic Model Certification23 Jul 2026
- 2026FairSelect: A Systematic Evaluation of Multi-Level and Intersectional Algorithmic Fairness9 Jul 2026
- 2026Beyond Third-Person Audits: Situated Interaction Auditing for User-Centered LLM Bias Research10 Jun 2026
- 2026TabChange: Precise Attribute Changes in Tabular Data30 May 2026
- 2026RISED: A Pre-Deployment Evaluation Framework for High-Stakes AI Decision-Support Systems, with Application to Healthcare13 May 2026
- 2026Fairness of Explanations in Artificial Intelligence (AI): A Unifying Framework, Axioms, and Future Direction toward Responsible AI11 May 2026
- 2026MIFair: A Mutual-Information Framework for Intersectionality and Multiclass Fairness30 Apr 2026
12 newest of 143 All 143 (JSON)