← Search

Arthur Charpentier

7 accepted papers

2026

Beyond Procedure: Substantive Fairness in Conformal Prediction

ICML 2026poster

Conformal prediction (CP) offers distribution-free uncertainty quantification for machine learning models, yet its interplay with fairness in downstream decision-making remains underexplored. Moving beyond CP as a standalone operation (procedural fairness), we analyze the holistic decision-making pi…

Cited by 0SourceScholar
2026

Decomposing Direct and Indirect Biases in Linear Models Under Demographic Parity Constraint

AAAI 2026technical

Linear models are widely used in high-stakes decision-making due to their simplicity and interpretability. Yet when fairness constraints such as demographic parity are introduced, their effects on model coefficients, and thus on how predictive bias is distributed across features, remain opaque. Exis

Cited by 0SourcePDFScholar
2026

Decomposing Direct and Indirect Biases in Linear Models Under Demographic Parity Constraint (Student Abstract)

AAAI 2026technical

Linear models are widely used in high-stakes decision-making due to their interpretability, but fairness constraints like Demographic Parity (DP) create opaque effects on model coefficients and predictive bias distribution. We propose a post-processing framework that can be applied on top of any lin

Cited by 0SourcePDFScholar
2025

Optimal Transport on Categorical Data for Conterfactuals Using Compositional Data and Dirichlet Transport

IJCAI 2025

Recently, optimal transport-based approaches have gained attention for deriving counterfactuals, e.g., to quantify algorithmic discrimination. However, in the general multivariate setting, these methods are often opaque and difficult to interpret. To address this, alternative methodologies have been

2025

Sequential Conditional Transport on Probabilistic Graphs for Interpretable Counterfactual Fairness

AAAI 2025technical

In this paper, we link two existing approaches to derive counterfactuals: adaptations based on a causal graph, and optimal transport. We extend "Knothe's rearrangement" and "triangular transport" to probabilistic graphical models, and use this counterfactual approach, referred to as sequential tran…

2024

A Sequentially Fair Mechanism for Multiple Sensitive Attributes

AAAI 2024technical

In the standard use case of Algorithmic Fairness, the goal is to eliminate the relationship between a sensitive variable and a corresponding score. Throughout recent years, the scientific community has developed a host of definitions and tools to solve this task, which work well in many practical ap…