Author

Hong-Zhi Yin

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#natural language process... Preprint Sep 2026

An Efficient and Effective Agentic Group Shilling Attack on Recommender Systems

The Agentic Group Attack System (AGAS), a coordinated shilling framework where a central Coordinator directs a group of role-switching worker agents to adaptively promote a target item across different victim families, consistently surpasses strong baselines in target promotion while better preserving benign recommenda...

Q. Nguyen, Trinh Pham, Viet Huynh et al. · 0 citations

#artificial intelligence Preprint Aug 2026

Denoising-Aware Inversion: Revealing Privacy Risks in Noise-Protected Text Embeddings

DAEI is proposed, a denoising-aware embedding inversion pipeline that combines a residual denoising autoencoder with generative text inversion where the denoiser is trained in an unsupervised manner using Stein's unbiased risk estimate to enable denoising from noisy observations alone.

Yubo Wang, Shujie Cui, James Bailey et al. · 0 citations