Learning Fair Ranking Policies via Differentiable Optimization of Ordered Weighted Averages

Fuente: arXiv
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Auteurs principaux: Dinh, My H., Kotary, James, Fioretto, Ferdinando
Format: Preprint
Publié: 2024
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author Dinh, My H.
Kotary, James
Fioretto, Ferdinando
author_facet Dinh, My H.
Kotary, James
Fioretto, Ferdinando
contents Learning to Rank (LTR) is one of the most widely used machine learning applications. It is a key component in platforms with profound societal impacts, including job search, healthcare information retrieval, and social media content feeds. Conventional LTR models have been shown to produce biases results, stimulating a discourse on how to address the disparities introduced by ranking systems that solely prioritize user relevance. However, while several models of fair learning to rank have been proposed, they suffer from deficiencies either in accuracy or efficiency, thus limiting their applicability to real-world ranking platforms. This paper shows how efficiently-solvable fair ranking models, based on the optimization of Ordered Weighted Average (OWA) functions, can be integrated into the training loop of an LTR model to achieve favorable balances between fairness, user utility, and runtime efficiency. In particular, this paper is the first to show how to backpropagate through constrained optimizations of OWA objectives, enabling their use in integrated prediction and decision models.
format Preprint
id arxiv_https___arxiv_org_abs_2402_05252
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Learning Fair Ranking Policies via Differentiable Optimization of Ordered Weighted Averages
Dinh, My H.
Kotary, James
Fioretto, Ferdinando
Machine Learning
Artificial Intelligence
Computers and Society
Learning to Rank (LTR) is one of the most widely used machine learning applications. It is a key component in platforms with profound societal impacts, including job search, healthcare information retrieval, and social media content feeds. Conventional LTR models have been shown to produce biases results, stimulating a discourse on how to address the disparities introduced by ranking systems that solely prioritize user relevance. However, while several models of fair learning to rank have been proposed, they suffer from deficiencies either in accuracy or efficiency, thus limiting their applicability to real-world ranking platforms. This paper shows how efficiently-solvable fair ranking models, based on the optimization of Ordered Weighted Average (OWA) functions, can be integrated into the training loop of an LTR model to achieve favorable balances between fairness, user utility, and runtime efficiency. In particular, this paper is the first to show how to backpropagate through constrained optimizations of OWA objectives, enabling their use in integrated prediction and decision models.
title Learning Fair Ranking Policies via Differentiable Optimization of Ordered Weighted Averages
topic Machine Learning
Artificial Intelligence
Computers and Society
url https://arxiv.org/abs/2402.05252