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Wei Yang Bryan Lim

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#machine learning Preprint Sep 2026

VirusCascade: Hijacking Collaborative Reflection in LLM-Powered Recommender Agents

Advancing beyond traditional static scoring models, LLM-powered agentic recommender systems (LLM-ARS) instantiate users and items as autonomous agents, whose semantic states are dynamically refined through a recurrent process known as collaborative reflection. While this mechanism improves recommendation quality, it si...

Yu-Rong Hao, Wen Zhou, Guo-Wei Guan et al. · 0 citations
#artificial intelligence Review May 2026

FraudBench: A Multimodal Benchmark for Detecting AI-Generated Fraudulent Refund Evidence

FraudBench is a multimodal benchmark for detecting AI-generated fraudulent refund evidence and shows that current MLLMs often recognize real-damaged evidence but fail on many fake-damaged subsets, with fake-damage detection rates far below the 50\% baseline on most generator subsets.

Xinyu Yan, Bo-Yang Chen, Jia-Ming Zhang et al. · 1 citation
#artificial intelligence Preprint Sep 2026

REFLEX with Jev for Efficient Selective Control in LLM Agents

REFLEX, an agent architecture that uses Jev as a fast, typed decision layer and calls a strong LLM when confidence is low, or generation is required, is studied, identifying when selective control with Jev can reduce computation and where its benefits are limited.

Tian-Tong Wu, Wei Yang Bryan Lim · 9 citations · ⚡3
#machine learning Preprint Sep 2026

Structural Entropy-Driven Graph Diffusion Generation for One-Shot Federated Graph Learning

One-shot federated graph learning (FGL) requires the server to estimate client contributions from highly compressed information, yet conventional volume-based weighting captures the amount of client data while overlooking how its connectivity is organized. In this paper, we propose SPIRE, a Structural Entropy-Driven Gr...

Shu-Tong Zheng, Le-Le Fu, Sheng Huang et al. · 0 citations
Preprint Aug 2026

SynChain: Inducing Computer-Use Agent Systems to Construct Their Own Attack Chains

This work introduces SynChain, a self-synthesized attack paradigm utilizing persistence-aware directed supervised fine-tuning to induce agents to create poisoned yet benign-looking artifacts, proving that securing CUAs requires provenance-aware reasoning over cross-task execution trajectories.

Fu-Yao Zhang, Jia-Ming Zhang, Che Wang et al. · 0 citations
Review Aug 2026

Adversarial Attacks for Good: A Survey of Proactive Protection across the Visual Content Lifecycle

This survey examines the protective paradigm that has grown around this intervention point, and finds that most protections are still validated mainly against static or weakly adaptive adversaries, while evidence beyond controlled benchmarks remains scarce.

Jiaming Zhang, Bo-Yang Chen, Zhe-Rui Li et al. · 0 citations
Preprint Aug 2026

Persuasive and Compliant Tendencies Predict Group Decision-Making in Humans and Language Models

DecisionQE is introduced, a questionnaire-based framework for measuring each model's persuasive and compliant tendencies across multiple decision scenarios, and the Werewolf game is used as an interactive testbed to study their effects on social influence and group outcomes under asymmetric information.

Wen-Wen He, Wen-Ke Huang, Wei Yang Bryan Lim et al. · 0 citations
2025

FedRAM: Federated Reweighting and Aggregation for Multi-Task Learning

FedRAM is proposed, a three-step framework that progressively updates two scalar hyperparameters: the task importance weight and the client aggregation coefficient, where the proxy model serves as an intermediate between the local reference model and the global agent model.

Fan Wu, Xinyu Yan, Jiabei Liu et al. · 0 citations

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