Search Results for author: Zhengyang Liu

Found 4 papers, 1 papers with code

Online Sequential Decision-Making with Unknown Delays

no code implementations12 Feb 2024 Ping Wu, Heyan Huang, Zhengyang Liu

Specifically, we introduce a family of Follow the Delayed Regularized Leader algorithms for feedback with full information on the loss function, a family of Delayed Mirror Descent algorithms for feedback with gradient information on the loss function and a family of Simplified Delayed Mirror Descent algorithms for feedback with the value information of the loss function's gradients at corresponding decision points.

Decision Making

ACMo: Angle-Calibrated Moment Methods for Stochastic Optimization

1 code implementation12 Jun 2020 Xunpeng Huang, Runxin Xu, Hao Zhou, Zhe Wang, Zhengyang Liu, Lei LI

Due to its simplicity and outstanding ability to generalize, stochastic gradient descent (SGD) is still the most widely used optimization method despite its slow convergence.

BIG-bench Machine Learning Stochastic Optimization

SPAN: A Stochastic Projected Approximate Newton Method

no code implementations10 Feb 2020 Xunpeng Huang, Xianfeng Liang, Zhengyang Liu, Yitan Li, Linyun Yu, Yue Yu, Lei LI

SPAN computes the inverse of the Hessian matrix via low-rank approximation and stochastic Hessian-vector products.

Acutum: When Generalization Meets Adaptability

no code implementations25 Sep 2019 Xunpeng Huang, Zhengyang Liu, Zhe Wang, Yue Yu, Lei LI

To the best of our knowledge, Acutum is the first adaptive gradient method without second moments.

BIG-bench Machine Learning

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