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Differentially private inference framework for Riemannian...
[Submitted on 14 May 2026 (v1), last revised 26 Jun 2026 (this v · 2026-05-14 · via stat updates on arXiv.org

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Abstract:We propose a novel and systematic differentially private (DP) inference framework for non-Euclidean data. First, we design two types of DP mechanisms for the Fréchet mean and variance for i.i.d. Riemannian manifold-valued data, tailored to different geometric structures and accompanied by analytic privacy budgets calibrated to the geometry of the underlying manifold. Second, we establish the consistency and central limit theorems (CLTs) of the proposed DP estimators, enabling a suite of statistical inference procedures under privacy constraints. Furthermore, we provide comprehensive implementation guidelines and feasible procedures, including consistent DP estimators of the asymptotic variance in the CLTs. Extensive numerical experiments support the proposed methodologies. Finally, we demonstrate the effectiveness of our approach on real-world medical image and sociological datasets supported on two representative manifolds.

Submission history

From: Qirui Hu [view email]
[v1] Thu, 14 May 2026 12:24:28 UTC (4,106 KB)
[v2] Fri, 26 Jun 2026 16:45:37 UTC (4,105 KB)