Publications

You can also find my articles on my Google Scholar profile.

Preprints

Principled Federated Random Forests for Heterogeneous Data
Khellaf, R., Scornet, E., Bellet, A., & Josse, J. — 2026 | Paper
Handling Covariate Mismatch in Federated Linear Prediction
Ayme, A., & Khellaf, R. — 2026 | Paper
Causal meta-analysis: Rethinking the foundations of evidence-based medicine
Berenfeld, C., Boughdiri, A., Colnet, B., van Amsterdam, W. A., Bellet, A., Khellaf, R., Scornet, E. & Josse, J. — 2026 | Paper

Accepted Publications

Federated Causal Inference from Multi-Site Observational Data via Propensity Score Aggregation
Khellaf R., Bellet A., Josse J. — ICML 2026 | Paper | Slides
Federated Causal Inference: Multi-Study ATE Estimation beyond Meta-Analysis
Khellaf R., Bellet A., Josse J. — AISTATS 2025 | Paper | Slides