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Author

Liwen Wu

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Preprint Aug 2026

ProTAGAD: A Foundation Model for TAG Anomaly Detection with Decoupled Topological and Textual Prototypes

This work introduces a novel foundation model for TAG anomaly detection featuring decoupled topological and textual prototypes and constructs dual prototype banks to independently model structural normality and semantic consistency, effectively isolating anomaly cues that are otherwise diluted during coupled aggregatio...

Ziyang Wang, Liwen Wu, Cheng Xie et al. · 0 citations
Open access Jul 2026

Boosting the Transferability of Adversarial Attacks with Semantic-Invariance and Low-Gradient Replacement

Deepneural networks are highly vulnerable to adversarial examples, which are generatedby introducing subtle perturbations to input data to mislead model classification. Currently,transfer-based attacks are prevalent in adversarial example generation and canbe categorized into input transformation-based and gradient-bas...

Yunqi Zhang, Wei Chen, Lei Zhao et al. · 0 citations

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