activity
20212026
most citedFedBR: Improving Federated Learning on Heterogeneous Data via Local Learning Bias Reduction

9 citations · 24 across the 13 of their papers we have counts for

collaborators

17 papers

cs.AI2026

Condition-Contrastive Extrapolation for On-Policy Distillation of Language Models

Wenxuan Luo, Chenxi Li, Haoyue Liu +2

On-policy distillation (OPD) improves a student language model by training on its own generated trajectories with supervision from a stronger teacher. However, when conditioned on…

cs.AI2026

Select Smarter, Not More: Prompt-Aware Evaluation Scheduling with Submodular Guarantees

Xiaoyu Ma, Yiwen Li, Haoyue Liu +4

Automatic prompt optimization (APO) hinges on the quality of its evaluation signal, yet scoring every prompt candidate on the full training set is prohibitively expensive. Existing…

cs.CL2026

Adaptive Prompt Structure Factorization: A Framework for Self-Discovering and Optimizing Compositional Prompt Programs

Haoyue Liu, Zhichao Wang, Yongxin Guo +2

Automated prompt optimization is crucial for eliciting reliable reasoning from large language models (LLMs), yet most API-only prompt optimizers iteratively edit monolithic prompts…

cs.CR2026

PIDP-Attack: Combining Prompt Injection with Database Poisoning Attacks on Retrieval-Augmented Generation Systems

Haozhen Wang, Haoyue Liu, Jionghao Zhu +3

Large Language Models (LLMs) have demonstrated remarkable performance across a wide range of applications. However, their practical deployment is often hindered by issues such as o…

cs.CL2025

Multi-Physics: A Comprehensive Benchmark for Multimodal LLMs Reasoning on Chinese Multi-Subject Physics Problems

Zhongze Luo, Zhenshuai Yin, Yongxin Guo +3

While multimodal LLMs (MLLMs) demonstrate remarkable reasoning progress, their application in specialized scientific domains like physics reveals significant gaps in current evalua…

cs.AI2025

GRPO-A: Guided Group Relative Policy Optimization with Adaptive Guidance

Yongxin Guo, Wenbo Deng, Zhenglin Cheng +1

Reinforcement Learning with Verifiable Rewards (RLVR) has markedly enhanced the reasoning abilities of large language models (LLMs). Its success, however, largely depends on strong…

cs.LG2024

FedMABA: Towards Fair Federated Learning through Multi-Armed Bandits Allocation

Zhichao Wang, Lin Wang, Yongxin Guo +2

The increasing concern for data privacy has driven the rapid development of federated learning (FL), a privacy-preserving collaborative paradigm. However, the statistical heterogen…

cs.LG2024

Smart Sampling: Helping from Friendly Neighbors for Decentralized Federated Learning

Lin Wang, Yang Chen, Yongxin Guo +1

Federated Learning (FL) is gaining widespread interest for its ability to share knowledge while preserving privacy and reducing communication costs. Unlike Centralized FL, Decentra…

cs.LG2024

Client2Vec: Improving Federated Learning by Distribution Shifts Aware Client Indexing

Yongxin Guo, Lin Wang, Xiaoying Tang +1

Federated Learning (FL) is a privacy-preserving distributed machine learning paradigm. Nonetheless, the substantial distribution shifts among clients pose a considerable challenge…

cs.LG2024

Dynamic Mixture of Experts: An Auto-Tuning Approach for Efficient Transformer Models

Yongxin Guo, Zhenglin Cheng, Xiaoying Tang +2

The Sparse Mixture of Experts (SMoE) has been widely employed to enhance the efficiency of training and inference for Transformer-based foundational models, yielding promising resu…

cs.CV2024★ 3 cited

VTG-LLM: Integrating Timestamp Knowledge into Video LLMs for Enhanced Video Temporal Grounding

Yongxin Guo, Jingyu Liu, Mingda Li +6

Video Temporal Grounding (VTG) strives to accurately pinpoint event timestamps in a specific video using linguistic queries, significantly impacting downstream tasks like video bro…

cs.LG2023

Enhancing Clustered Federated Learning: Integration of Strategies and Improved Methodologies

Yongxin Guo, Xiaoying Tang, Tao Lin

Federated Learning (FL) is an evolving distributed machine learning approach that safeguards client privacy by keeping data on edge devices. However, the variation in data among cl…

cs.LG2023★ 2 cited

FedRC: Tackling Diverse Distribution Shifts Challenge in Federated Learning by Robust Clustering

Yongxin Guo, Xiaoying Tang, Tao Lin

Federated Learning (FL) is a machine learning paradigm that safeguards privacy by retaining client data on edge devices. However, optimizing FL in practice can be challenging due t…

eess.IV2022★ 2 cited

InvNorm: Domain Generalization for Object Detection in Gastrointestinal Endoscopy

Weichen Fan, Yuanbo Yang, Kunpeng Qiu +2

Domain Generalization is a challenging topic in computer vision, especially in Gastrointestinal Endoscopy image analysis. Due to several device limitations and ethical reasons, cur…

cs.LG2022★ 8 cited

DELTA: Diverse Client Sampling for Fasting Federated Learning

Lin Wang, YongXin Guo, Tao Lin +1

Partial client participation has been widely adopted in Federated Learning (FL) to reduce the communication burden efficiently. However, an inadequate client sampling scheme can le…

cs.LG2022★ 9 cited

FedBR: Improving Federated Learning on Heterogeneous Data via Local Learning Bias Reduction

Yongxin Guo, Xiaoying Tang, Tao Lin

Federated Learning (FL) is a way for machines to learn from data that is kept locally, in order to protect the privacy of clients. This is typically done using local SGD, which hel…

cs.LG2021

Towards Federated Learning on Time-Evolving Heterogeneous Data

Yongxin Guo, Tao Lin, Xiaoying Tang

Federated Learning (FL) is a learning paradigm that protects privacy by keeping client data on edge devices. However, optimizing FL in practice can be difficult due to the diversit…