Search Results for author: Xinlei Yi

Found 9 papers, 1 papers with code

Risk-averse Learning with Non-Stationary Distributions

no code implementations3 Apr 2024 Siyi Wang, Zifan Wang, Xinlei Yi, Michael M. Zavlanos, Karl H. Johansson, Sandra Hirche

Considering non-stationary environments in online optimization enables decision-maker to effectively adapt to changes and improve its performance over time.

Neural optimal controller for stochastic systems via pathwise HJB operator

no code implementations23 Feb 2024 Zhe Jiao, Xiaoyan Luo, Xinlei Yi

The aim of this work is to develop deep learning-based algorithms for high-dimensional stochastic control problems based on physics-informed learning and dynamic programming.

Distributed Online Convex Optimization with Adversarial Constraints: Reduced Cumulative Constraint Violation Bounds under Slater's Condition

no code implementations31 May 2023 Xinlei Yi, Xiuxian Li, Tao Yang, Lihua Xie, Yiguang Hong, Tianyou Chai, Karl H. Johansson

Moreover, if the loss functions are strongly convex, then the network regret bound is reduced to $\mathcal{O}(\log(T))$, and the network cumulative constraint violation bound is reduced to $\mathcal{O}(\sqrt{\log(T)T})$ and $\mathcal{O}(\log(T))$ without and with Slater's condition, respectively.

DeceFL: A Principled Decentralized Federated Learning Framework

1 code implementation15 Jul 2021 Ye Yuan, Jun Liu, Dou Jin, Zuogong Yue, Ruijuan Chen, Maolin Wang, Chuan Sun, Lei Xu, Feng Hua, Xin He, Xinlei Yi, Tao Yang, Hai-Tao Zhang, Shaochun Sui, Han Ding

Although there has been a joint effort in tackling such a critical issue by proposing privacy-preserving machine learning frameworks, such as federated learning, most state-of-the-art frameworks are built still in a centralized way, in which a central client is needed for collecting and distributing model information (instead of data itself) from every other client, leading to high communication pressure and high vulnerability when there exists a failure at or attack on the central client.

Federated Learning Privacy Preserving

Regret and Cumulative Constraint Violation Analysis for Online Convex Optimization with Long Term Constraints

no code implementations9 Jun 2021 Xinlei Yi, Xiuxian Li, Tao Yang, Lihua Xie, Tianyou Chai, Karl H. Johansson

A novel algorithm is first proposed and it achieves an $\mathcal{O}(T^{\max\{c, 1-c\}})$ bound for static regret and an $\mathcal{O}(T^{(1-c)/2})$ bound for cumulative constraint violation, where $c\in(0, 1)$ is a user-defined trade-off parameter, and thus has improved performance compared with existing results.

Regret and Cumulative Constraint Violation Analysis for Distributed Online Constrained Convex Optimization

no code implementations1 May 2021 Xinlei Yi, Xiuxian Li, Tao Yang, Lihua Xie, Tianyou Chai, Karl H. Johansson

This is a sequential decision making problem with two sequences of arbitrarily varying convex loss and constraint functions.

Decision Making

A Primal-Dual SGD Algorithm for Distributed Nonconvex Optimization

no code implementations4 Jun 2020 Xinlei Yi, Shengjun Zhang, Tao Yang, Tianyou Chai, Karl H. Johansson

The distributed nonconvex optimization problem of minimizing a global cost function formed by a sum of $n$ local cost functions by using local information exchange is considered.

Optimization and Control

Distributed Online Convex Optimization with Time-Varying Coupled Inequality Constraints

no code implementations6 Mar 2019 Xinlei Yi, Xiuxian Li, Lihua Xie, Karl H. Johansson

Assuming Slater's condition, we show that the algorithm achieves smaller bounds on the constraint violation.

Stability of Analytic Neural Networks with Event-triggered Synaptic Feedbacks

no code implementations2 Apr 2016 Ren Zheng, Xinlei Yi, Wenlian Lu, Tianping Chen

In this paper, we investigate stability of a class of analytic neural networks with the synaptic feedback via event-triggered rules.

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