Search Results for author: Wenhan Xian

Found 4 papers, 0 papers with code

Communication-Efficient Adam-Type Algorithms for Distributed Data Mining

no code implementations14 Oct 2022 Wenhan Xian, Feihu Huang, Heng Huang

In our theoretical analysis, we prove that our new algorithm achieves a fast convergence rate of $O(\frac{1}{\sqrt{nT}} + \frac{1}{(k/d)^2 T})$ with the communication cost of $O(k \log(d))$ at each iteration.

Vocal Bursts Type Prediction

Distributed Dynamic Safe Screening Algorithms for Sparse Regularization

no code implementations23 Apr 2022 Runxue Bao, Xidong Wu, Wenhan Xian, Heng Huang

To the best of our knowledge, this is the first work of distributed safe dynamic screening method.

Distributed Optimization

A Faster Decentralized Algorithm for Nonconvex Minimax Problems

no code implementations NeurIPS 2021 Wenhan Xian, Feihu Huang, yanfu Zhang, Heng Huang

We prove that our DM-HSGD algorithm achieves stochastic first-order oracle (SFO) complexity of $O(\kappa^3 \epsilon^{-3})$ for decentralized stochastic nonconvex-strongly-concave problem to search an $\epsilon$-stationary point, which improves the exiting best theoretical results.

Learning Better Visual Data Similarities via New Grouplet Non-Euclidean Embedding

no code implementations ICCV 2021 yanfu Zhang, Lei Luo, Wenhan Xian, Heng Huang

However, pair-wise methods involve expensive training costs, while proxy-based methods are less accurate in characterizing the relationships between data points.

Metric Learning

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