Author

Yilong Wang

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Preprint Aug 2026

Trojaning the Alignment: Stealthy Backdoor Attacks against Graph Foundation Models

STAG is proposed, a stealthy trojan attack framework designed for the graph-language alignment interface of GFMs on TAGs that realizes trigger nodes as readable text through candidate retrieval and regularizes the trigger-attached subgraph so that its local structure remains close to the original subgraph.

Min-hua Lin, Zhi-Cheng Gao, Yilong Wang et al. · 0 citations

Preprint Aug 2026

Multi-Granularity Context-Enhanced RAG over Multimodal Knowledge Graphs

A novel framework for constructing a Context-Enhanced MMKG (CEMMKG) is proposed, effective in leveraging contextual information to improve MMKG-based RAG performance and its effectiveness across different MMKG-based RAG methods demonstrates its broad applicability.

Zongyu Wu, Yilong Wang, Xiaochen Wang et al. · 0 citations