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20242026
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cs.LG2026

Bridging On-Device and Cloud LLMs for Collaborative Reasoning: A Unified Methodology for Local Routing and Post-Training

Wenzhi Fang, Dong-Jun Han, Liangqi Yuan +2

Device-cloud collaboration holds promise for deploying large language models (LLMs), leveraging lightweight on-device models for efficiency while relying on powerful cloud models f…

cs.LG2026

Joint Continual Learning of Local Language Models and Cloud Offloading Decisions with Budget Constraints

Evan Chen, Wenzhi Fang, Shiqiang Wang +1

Locally deployed Small Language Models (SLMs) must continually support diverse tasks under strict memory and computation constraints, making selective reliance on cloud Large Langu…

cs.LG2025

Communication-Efficient and Differentially Private Vertical Federated Learning with Zeroth-Order Optimization

Jianing Zhang, Evan Chen, Dong-Jun Han +2

Vertical Federated Learning (VFL) enables collaborative model training across feature-partitioned devices, yet its reliance on device-server information exchange introduces signifi…

cs.LG2025

Gradient Correction in Federated Learning with Adaptive Optimization

Evan Chen, Shiqiang Wang, Jianing Zhang +3

In federated learning (FL), model training performance is strongly impacted by data heterogeneity across clients. Client-drift compensation methods have recently emerged as a solut…

cs.LG2024

Hierarchical Federated Learning with Multi-Timescale Gradient Correction

Wenzhi Fang, Dong-Jun Han, Evan Chen +2

While traditional federated learning (FL) typically focuses on a star topology where clients are directly connected to a central server, real-world distributed systems often exhibi…

cs.LG2024

Differentially-Private Multi-Tier Federated Learning

Evan Chen, Frank Po-Chen Lin, Dong-Jun Han +1

While federated learning (FL) eliminates the transmission of raw data over a network, it is still vulnerable to privacy breaches from the communicated model parameters. In this wor…