activity
20122026
most citedApproximation of fractional Brownian motion by martingales

9 citations · 11 across the 5 of their papers we have counts for

collaborators

7 papers

cs.LG2026

CALLIOPE: Private Insights into AI Use, Without Embeddings

Edith Cohen, Vadym Doroshenko, Badih Ghazi +11

We introduce CALLIOPE, a top-down framework for discovering topic hierarchies in large corpora of unstructured data (e.g., LLM conversations), while supporting differential privacy…

cs.CR2026

Tight End-to-End Accounting for Differentially Private Synthetic Data

Georgi Ganev, Vadym Doroshenko, Arun Ganesh +3

Differentially private (DP) pipelines often combine heterogeneous mechanisms, yet their guarantees are best analyzed using different notions of privacy (e.g., bounded range, zCDP,…

cs.DS2026

Online Differentially Private Consistent Clustering

Edith Cohen, Vadym Doroshenko, Badih Ghazi +7

We study differentially private (DP) -means and -median clustering in the online streaming setting. In this model, points arrive sequentially, and at each time step, we need…

cs.LG2026

JAX-Privacy: A library for differentially private machine learning

Ryan McKenna, Galen Andrew, Borja Balle +6

JAX-Privacy is a library designed to simplify the deployment of robust and performant mechanisms for differentially private machine learning. Guided by design principles of usabili…

cs.CR2023

Differentially Private Stream Processing at Scale

Bing Zhang, Vadym Doroshenko, Peter Kairouz +6

We design, to the best of our knowledge, the first differentially private (DP) stream aggregation processing system at scale. Our system -- Differential Privacy SQL Pipelines (DP-S…

cs.DS2022★ 2 cited

Connect the Dots: Tighter Discrete Approximations of Privacy Loss Distributions

Vadym Doroshenko, Badih Ghazi, Pritish Kamath +2

The privacy loss distribution (PLD) provides a tight characterization of the privacy loss of a mechanism in the context of differential privacy (DP). Recent work has shown that PLD…

math.PR2012★ 9 cited

Approximation of fractional Brownian motion by martingales

Sergiy Shklyar, Georgiy Shevchenko, Yuliya Mishura +2

We study the problem of optimal approximation of a fractional Brownian motion by martingales. We prove that there exist a unique martingale closest to fractional Brownian motion in…