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Xingtong Yu

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#artificial intelligence Preprint Sep 2026

ZeroGAR: Benchmarking the Adversarial Robustness of Zero-Shot Graph Models

Zero-shot graph models (ZGMs), which learn transferable knowledge from source graphs and directly apply to unseen target graphs without any adaptation, have achieved promising performance and attracted considerable attention. Despite their proliferation, existing ZGMs are predominantly evaluated on clean graphs, while...

Zhong-Jian Zhang, Xiao Wang, Bu-Sheng Zhang et al. · 0 citations
Book Open access Aug 2026

UrbanGraphEmbeddings: Learning and Evaluating Spatially Grounded Multimodal Embeddings for Urban Environments

Learning transferable multimodal embeddings for urban environments is challenging because urban understanding is inherently spatial, yet existing datasets and benchmarks lack explicit alignment between street-view images and urban structure. We introduce \dataset, a spatially grounded dataset that anchors street-view i...

Jie Zhang, Xing-Tong Yu, Yuan Fang et al. · 0 citations
Preprint Aug 2026

TradingMoE: Routing the Right Experts in Evolving Markets

Large language models (LLMs) have shown strong potential for financial analysis and trading, but direct trading remains challenging because the predictive capabilities required can vary across assets, decision fields, and market conditions. Existing LLM-based trading systems either coordinate human-defined external exp...

Chang Zhou, Xingtong Yu, Minbin Huang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

From Parameters to Answers: How LLMs Retrieve and Use Their Internal Knowledge

This work compares country-continent questions with noun, adjective, and code answers while keeping several fitted measurements distinct across Qwen, Llama, and Gemma to separate early readability, natural strength, causal steering, and later content dependence.

Wen-Lin Wei, Yuan Fang, Ren-He Jiang et al. · 0 citations
Preprint Aug 2026

Dynamic Graph Prompting via Topology-Routed Mixed-Curvature Experts

Dynamic graph prompting freezes a pre-trained temporal backbone and adapts it to label-scarce downstream tasks using lightweight prompts. However, existing methods operate within a single, fixed embedding space. In this work, we reveal that temporal shifts in local clustering and degree heterogeneity actively reorganiz...

Quanxin Wang, Xuanting Xie, Bingheng Li et al. · 0 citations
Preprint Jul 2026

HyperClaim: Fine-Grained Cross-Modal Hypergraph Reasoning for Video Misinformation Detection

Video misinformation detection is often approached through global multimodal fusion or free-form multimodal reasoning. Both paradigms can under-represent localized authenticity cues that arise from coupled interactions among query phrases, contextual text, and short temporal spans of frames. Because such interactions a...

Xiangbo Wang, Jiasheng Zhang, Xingtong Yu et al. · 0 citations
Book Open access Aug 2026

UrbanGraphEmbeddings: Learning and Evaluating Spatially Grounded Multimodal Embeddings for Urban Environments

Learning transferable multimodal embeddings for urban environments is challenging because urban understanding is inherently spatial, yet existing datasets and benchmarks lack explicit alignment between street-view images and urban structure. We introduce \dataset, a spatially grounded dataset that anchors street-view i...

Jie Zhang, Xingtong Yu, Yuan Fang et al. · 0 citations

MolGA: Molecular Graph Adaptation with Pre-trained 2D Graph Encoder

Molecular graph representation learning is widely used in chemical and biomedical research, and reusing widely available and well-validated pre-trained 2D encoders, while incorporating molecular domain knowledge during downstream adaptation, offers a more practical alternative.

Xingtong Yu, Chang Zhou, Xinming Zhang et al. · 0 citations

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