Search Results for author: Shange Tang

Found 4 papers, 1 papers with code

Maximum Likelihood Estimation is All You Need for Well-Specified Covariate Shift

no code implementations27 Nov 2023 Jiawei Ge, Shange Tang, Jianqing Fan, Cong Ma, Chi Jin

This paper addresses this fundamental question by proving that, surprisingly, classical Maximum Likelihood Estimation (MLE) purely using source data (without any modification) achieves the minimax optimality for covariate shift under the well-specified setting.

regression Retrieval

On the Provable Advantage of Unsupervised Pretraining

no code implementations2 Mar 2023 Jiawei Ge, Shange Tang, Jianqing Fan, Chi Jin

Unsupervised pretraining, which learns a useful representation using a large amount of unlabeled data to facilitate the learning of downstream tasks, is a critical component of modern large-scale machine learning systems.

Contrastive Learning Representation Learning

Is Vertical Logistic Regression Privacy-Preserving? A Comprehensive Privacy Analysis and Beyond

no code implementations19 Jul 2022 Yuzheng Hu, Tianle Cai, Jinyong Shan, Shange Tang, Chaochao Cai, Ethan Song, Bo Li, Dawn Song

We provide a comprehensive and rigorous privacy analysis of VLR in a class of open-source Federated Learning frameworks, where the protocols might differ between one another, yet a procedure of obtaining local gradients is implicitly shared.

Philosophy Privacy Preserving +2

Second-order Information in First-order Optimization Methods

1 code implementation20 Dec 2019 Yuzheng Hu, Licong Lin, Shange Tang

To the best of our knowledge, this is the first paper that seriously considers the necessity of square root among all adaptive methods.

2D Human Pose Estimation

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