Applications of Risk Science to AI Fairness Evaluation: Principles, Challenges, and Best Practices
Organizations: University of Washington Seattle, WA 98195 USA
Abstract
Scholarly work which aims to describe potential societal impacts (e.g., risks) of proliferating technology (especially related to artificial intelligence or other algorithmic systems) is likely to have an impact beyond the scientific communities it was written for, given that general society itself is a primary object of study. However, it is an open question whether the current practices of AI evaluation scholarship follow the principles and best practices established by risk science, which aims to systematically generate knowledge related to understanding, assessing, communicating, managing, and governing risk. In this work, we examine this in depth by conducting a literature review of scholarly works purporting to evaluate the bias or fairness of technological systems used for tasks related to hiring and employment. Through analysis of 22 common fairness evaluation metrics and studies using them, we find that most characterize the severity of bias- or fairness-related consequences but do not follow best practices to characterize the uncertainty around either the occurrence of these consequences or severity estimates. Next, we conduct a case study of fairness evaluation for an AI-mediated resume screening task and demonstrate how principles of risk science can be incorporated into such an evaluation. Finally, we propose the AI Risk Report Card, which facilitates the reporting and communication of risk assessment results to stakeholders in positions to act based on the predicted risks. The outcomes of these activities suggest that further research at the convergence of risk science and AI evaluation can lead to advancements in AI assessments of societal impact by enabling shared frameworks to evaluate and discuss AI risks both within and outside of the scientific community.
Figures & tables
| Measure | Bounds | Valid Probability |
| Skew@k | (- , ) | No (I) |
| Normalized Discounted Cumulative Kullback-Leibler Divergence (NDKL) | [0,1] | No (II) |
| Disparate Impact (DI) | [0,1] | No (II) |
| Demographic Disparity (DD) | [-1,1] | No (I) |
| Representation in Positive Predictive Rate (RPPR) | [-1,1] | No (I) |
| True-Positive Rate Difference (TPRD) | [-1,1] | No (I) |
Appendix figures & tables5 assets
Supplementary material from the paper’s appendix.
Appendix
| Uncertainty | Strength of Knowledge | Criteria | Conditions |
|---|---|---|---|
| The phenomena involved are well understood; the models used are known to give predictions with the required accuracy | |||
| Much reliable data are available | |||
| The assumptions made are seen as very reasonable | |||
| Low | Strong | All conditions are fulfilled | There is broad agreement among experts |
| Example: The phenomena involved are well understood, but the models used are considered simple | |||
| Medium | Moderate | Conditions between low and high are fulfilled to varying degrees | Example: Some reliable data are available |
| Rank | Criteria |
|---|---|
| Very high risk | Potential for extreme consequences, relatively large associated probability of such consequences and/or significant uncertainty (relatively weak background knowledge) |
| High risk | The potential for extreme consequences, relatively small associated probability of such consequences and moderate or weak background knowledge |
| Moderate risk | Between low and high risk. For example, the potential for moderate consequences, and weak background knowledge. |
| Low risk | No potential for serious consequences |
| Measure | Equation | Studies |
| Skew@k | ( Geyik, Ambler, and Kenthapadi 2019 ) | |
| Normalized Discounted Cumulative Kullback-Leibler Divergence (NDKL) | ( Geyik, Ambler, and Kenthapadi 2019 ) ( Arafan et al. 2022 ) | |
| Disparate Impact (DI) | ( Booth et al. 2021 ) ( Burke, Burke, and Kuljanin 2021 ) ( Köchling et al. 2021 ) ( Wilson et al. 2021 ) ( Deshpande, Pan, and Foulds 2020 ) | |
| Demographic Disparity (DD) | ( Rus et al. 2022 ) | |
| Representation in Positive Predictive Rate (RPPR) | ( Ali et al. 2019 ) ( Imana, Korolova, and Heidemann 2021 ) ( Pena et al. 2020 ) | |
| True-Positive Rate Difference (TPRD) | ( De-Arteaga et al. 2019 ) ( Hemamou and Coleman 2022 ) |
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