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local differential privacy 1poisoning attacks 1randomized projection 1robust statistics 1sparse vector estimation 1

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stat.ML2026

Robust Estimation of Sparse Numerical Vectors under Local Differential Privacy

Puning Zhao, Zhikun Zhang, Shaowei Wang +5

The paper proposes a Randomized Projection with Clipping (RPC) method to robustly estimate sparse numerical vectors under local differential privacy, providing theoretical error gu…