Search Results for author: Yongcun Song

Found 5 papers, 1 papers with code

FedADMM-InSa: An Inexact and Self-Adaptive ADMM for Federated Learning

no code implementations21 Feb 2024 Yongcun Song, Ziqi Wang, Enrique Zuazua

First, we design an inexactness criterion for the clients' local updates to eliminate the need for empirically setting the local training accuracy.

Federated Learning

Approximate and Weighted Data Reconstruction Attack in Federated Learning

no code implementations13 Aug 2023 Yongcun Song, Ziqi Wang, Enrique Zuazua

Federated Learning (FL) is a distributed learning paradigm that enables multiple clients to collaborate on building a machine learning model without sharing their private data.

Bayesian Optimization Federated Learning +1

The Hard-Constraint PINNs for Interface Optimal Control Problems

1 code implementation13 Aug 2023 Ming-Chih Lai, Yongcun Song, Xiaoming Yuan, Hangrui Yue, Tianyou Zeng

We show that the physics-informed neural networks (PINNs), in combination with some recently developed discontinuity capturing neural networks, can be applied to solve optimal control problems subject to partial differential equations (PDEs) with interfaces and some control constraints.

Accelerated primal-dual methods with enlarged step sizes and operator learning for nonsmooth optimal control problems

no code implementations1 Jul 2023 Yongcun Song, Xiaoming Yuan, Hangrui Yue

The accelerated primal-dual method with operator learning is mesh-free, numerically efficient, and scalable to different types of PDEs.

Operator learning

Bilinear Optimal Control of an Advection-reaction-diffusion System

no code implementations7 Jan 2021 Roland Glowinski, Yongcun Song, Xiaoming Yuan, Hangrui Yue

However, due to the additional divergence-free constraint on the control variable and the nonlinear relation between the state and control variables, it is challenging to compute the gradient and the optimal stepsize at each CG iteration, and thus nontrivial to implement the CG method.

Optimization and Control 49M41, 35Q93, 49J20

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