Author

Xuefeng Xu

University of Warwick

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#machine learning Oct 2025

Federated Computation of ROC and PR Curves

A novel framework for approximating ROC and PR curves using quantiles of the score distribution, which can be computed efficiently under secure aggregation and distributed differential privacy, and provides theoretical guarantees on the approximation quality by bounding the Area Error between the true and estimated cur...

Xuefeng Xu, G. Cormode · arXiv.org · 0 citations

#artificial intelligence Preprint Feb 2026

FedPS: Federated Preprocessing for structured data via aggregated Statistics

FedPS is introduced, a framework for federated data preprocessing based on aggregated statistics that design federated algorithms for feature scaling, encoding, discretization, and missing-value imputation, and extend preprocessing-related models such as Bayesian Linear Regression to both horizontal and vertical FL set...

Xuefeng Xu, G. Cormode · 0 citations