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C. Lebeda

2 papers hereh-index 7163 citations20 works total

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author position
  • first author1
  • middle author1

Across the 2 of 2 papers where every author was matched, so the position is known.

fields
  • cs.CR1
  • cs.DS1

identity via Semantic Scholar / OpenAlex

collaborators

2 papers

cs.DS2025

Weighted Fourier Factorizations: Optimal Gaussian Noise for Differentially Private Marginal and Product Queries

Christian Janos Lebeda, Aleksandar Nikolov, Haohua Tang

We revisit the task of releasing marginal queries under differential privacy with additive (correlated) Gaussian noise. We first give a construction for answering arbitrary workloa…

cs.CR2021

Differentially Private Sparse Vectors with Low Error, Optimal Space, and Fast Access

Martin Aumüller, Christian Janos Lebeda, Rasmus Pagh

Representing a sparse histogram, or more generally a sparse vector, is a fundamental task in differential privacy. An ideal solution would use space close to information-theoretica…

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