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Author

Songlin Hu

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Book Open access Aug 2026

Geometry-aware Test-Time Adaptation on Graphs

Test-time adaptation (TTA) has been a widely-studied paradigm for adapting well-trained models to distributionally shifted test data. Recent works extend TTA to graphs using graph augmentations and self-supervised objectives in Euclidean space. However, graph-structured data often exhibit heterogeneity where semantic s...

Ling-Wei Wei, Dou Hu, Li Sun et al. · 0 citations
Preprint Jul 2026

Large Language Models in Misinformation Ecosystems: Misuse, Defense, and Vulnerability

A role-layer framework is introduced to unify LLM risks and defenses, and identifies three key open challenges: moving from static detection accuracy to budgeted ecosystem-level risk evaluation, hardening LLM-centered verification pipelines against adversarial manipulation, and deploying auditable human-in-the-loop ver...

Lingwei Wei, Dou Hu, Wei Zhou et al. · 0 citations

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