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Machine learning (ML) algorithms have become integral to decision making in various domains, including healthcare, finance, education, and law enforcement. However, concerns about fairness and bias in these systems pose significant ethical…

Machine Learning · Computer Science 2024-12-18 Ahmed Rashed , Abdelkrim Kallich , Mohamed Eltayeb

Software bias is an increasingly important operational concern for software engineers. We present a large-scale, comprehensive empirical study of 17 representative bias mitigation methods for Machine Learning (ML) classifiers, evaluated…

Software Engineering · Computer Science 2023-02-13 Zhenpeng Chen , Jie M. Zhang , Federica Sarro , Mark Harman

Machine learning models are increasingly being used in important decision-making software such as approving bank loans, recommending criminal sentencing, hiring employees, and so on. It is important to ensure the fairness of these models so…

Machine Learning · Computer Science 2020-09-23 Sumon Biswas , Hridesh Rajan

As machine learning (ML) systems increasingly shape access to credit, jobs, and other opportunities, the fairness of algorithmic decisions has become a central concern. Yet it remains unclear when enforcing fairness constraints in these…

Machine Learning · Statistics 2026-03-10 Yi Yang , Xiangyu Chang , Pei-yu Chen

As machine learning (ML) systems get adopted in more critical areas, it has become increasingly crucial to address the bias that could occur in these systems. Several fairness pre-processing algorithms are available to alleviate implicit…

Understanding and removing bias from the decisions made by machine learning models is essential to avoid discrimination against unprivileged groups. Despite recent progress in algorithmic fairness, there is still no clear answer as to which…

This paper provides a comprehensive survey of bias mitigation methods for achieving fairness in Machine Learning (ML) models. We collect a total of 341 publications concerning bias mitigation for ML classifiers. These methods can be…

Machine Learning · Computer Science 2023-10-12 Max Hort , Zhenpeng Chen , Jie M. Zhang , Mark Harman , Federica Sarro

Fairness in machine learning (ML) has become a rapidly growing area of research. But why, in the first place, is unfairness in ML wrong? And why should we care about improving fairness? Most fair-ML research implicitly appeals to…

Machine Learning · Computer Science 2026-02-27 Youjin Kong

Machine learning (ML) is playing an increasingly important role in rendering decisions that affect a broad range of groups in society. ML models inform decisions in criminal justice, the extension of credit in banking, and the hiring…

Machine Learning · Computer Science 2022-07-14 Damien Dablain , Bartosz Krawczyk , Nitesh Chawla

In recent years, many incidents have been reported where machine learning models exhibited discrimination among people based on race, sex, age, etc. Research has been conducted to measure and mitigate unfairness in machine learning models.…

Machine Learning · Computer Science 2021-07-21 Sumon Biswas , Hridesh Rajan

Classification, a heavily-studied data-driven machine learning task, drives an increasing number of prediction systems involving critical human decisions such as loan approval and criminal risk assessment. However, classifiers often…

Machine Learning · Computer Science 2022-04-12 Maliha Tashfia Islam , Anna Fariha , Alexandra Meliou , Babak Salimi

Fairness is a critical requirement for human-related, high-stakes software systems, motivating extensive research on bias mitigation. Prior work has largely focused on tabular data settings using traditional Machine Learning (ML) methods.…

Software Engineering · Computer Science 2026-04-15 Xinyue Li , Sixuan Li , Ying Xiao , Jie M. Zhang , Zhou Yang , Xuanzhe Liu , Zhenpeng Chen

In recent years fairness in machine learning (ML) has emerged as a highly active area of research and development. Most define fairness in simple terms, where fairness means reducing gaps in performance or outcomes between demographic…

Artificial Intelligence · Computer Science 2023-03-14 Brent Mittelstadt , Sandra Wachter , Chris Russell

Fairness is a critical requirement for Machine Learning (ML) software, driving the development of numerous bias mitigation methods. Previous research has identified a leveling-down effect in bias mitigation for computer vision and natural…

Machine Learning · Computer Science 2025-08-06 Zhenpeng Chen , Xinyue Li , Jie M. Zhang , Weisong Sun , Ying Xiao , Tianlin Li , Yiling Lou , Yang Liu

Unfair predictions of machine learning (ML) models impede their broad acceptance in real-world settings. Tackling this arduous challenge first necessitates defining what it means for an ML model to be fair. This has been addressed by the ML…

Machine Learning · Computer Science 2024-08-30 Selim Kuzucu , Jiaee Cheong , Hatice Gunes , Sinan Kalkan

The use of machine learning (ML) in high-stakes societal decisions has encouraged the consideration of fairness throughout the ML lifecycle. Although data integration is one of the primary steps to generate high quality training data, most…

Machine Learning · Computer Science 2022-04-01 Sainyam Galhotra , Karthikeyan Shanmugam , Prasanna Sattigeri , Kush R. Varshney

Machine learning models are central to people's lives and impact society in ways as fundamental as determining how people access information. The gravity of these models imparts a responsibility to model developers to ensure that they are…

Applications · Statistics 2020-07-13 Cyrus DiCiccio , Sriram Vasudevan , Kinjal Basu , Krishnaram Kenthapadi , Deepak Agarwal

Fairness emerged as an important requirement to guarantee that Machine Learning (ML) predictive systems do not discriminate against specific individuals or entire sub-populations, in particular, minorities. Given the inherent subjectivity…

Machine Learning · Computer Science 2022-06-08 Karima Makhlouf , Sami Zhioua , Catuscia Palamidessi

In recent years, machine learning algorithms have become ubiquitous in a multitude of high-stakes decision-making applications. The unparalleled ability of machine learning algorithms to learn patterns from data also enables them to…

Machine Learning · Computer Science 2022-07-14 José Pombal , André F. Cruz , João Bravo , Pedro Saleiro , Mário A. T. Figueiredo , Pedro Bizarro

The fairness of machine learning (ML) approaches is critical to the reliability of modern artificial intelligence systems. Despite extensive study on this topic, the fairness of ML models in the software engineering (SE) domain has not been…

Software Engineering · Computer Science 2023-07-24 Mohammad Mahdi Mohajer , Alvine Boaye Belle , Nima Shiri harzevili , Junjie Wang , Hadi Hemmati , Song Wang , Zhen Ming , Jiang