Search Results for author: Chendi Wang

Found 4 papers, 0 papers with code

Neural Collapse Meets Differential Privacy: Curious Behaviors of NoisyGD with Near-perfect Representation Learning

no code implementations14 May 2024 Chendi Wang, Yuqing Zhu, Weijie J. Su, Yu-Xiang Wang

A recent study by De et al. (2022) has reported that large-scale representation learning through pre-training on a public dataset significantly enhances differentially private (DP) learning in downstream tasks, despite the high dimensionality of the feature space.

Statistical Theory of Differentially Private Marginal-based Data Synthesis Algorithms

no code implementations21 Jan 2023 Ximing Li, Chendi Wang, Guang Cheng

To complete the picture, we establish a lower bound for TV accuracy that holds for every $\epsilon$-DP synthetic data generator.

Human Emotional Facial Expression Recognition

no code implementations28 Mar 2018 Chendi Wang

An automatic Facial Expression Recognition (FER) model with Adaboost face detector, feature selection based on manifold learning and synergetic prototype based classifier has been proposed.

Facial Expression Recognition Facial Expression Recognition (FER) +1

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