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Author

Chen Jason Zhang

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Aug 2026

GraphAgent: An Effective Knowledge-Guided GNN Model Selection System

GraphAgent is demonstrated, a user-friendly and effective system for knowledge-guided selection of Graph Neural Network models for new graph data that unifies over 413,000 performance records from public GNN benchmarks into a comprehensive Graph-Model Knowledge Graph (GMKG).

Ming-Tao Zhang, Hao-Yang Li, Yu-Ming Xu et al. · 0 citations
Preprint Aug 2026

Meta-Moderator: Empowering Multi-Agent Debate with Meta-Cognition

Meta-Moderator is introduced, a learnable framework that dynamically regulates debate and decides when to finalize an answer, and outperforms widely used decision layers and transfers across tasks and system configurations.

Wentao Hu, Zhuoyue Wan, Jin-Hao Shen et al. · 0 citations
#machine learning Preprint Sep 2026

TrajMind: Chaining Role-Specialized LoRAs for Fast-and-Slow Collective Trajectory Anomaly Diagnosis

Diagnosing collective anomalies from urban trajectories is increasingly important for traffic governance, as it reveals what happened, who was involved, and where and when the event occurred. Existing detectors efficiently produce scores or labels, whereas vision--language pipelines provide richer semantics; neither co...

Jiahai Wu, Zhen-Qun Yang, Chen Jason Zhang et al. · 0 citations
Jul 2026

PolyUQuest: Verifiable Structure-Aware Web RAG over Heterogeneous Graphs

PolyUQuest is presented, a verifiable, structure-aware web RAG framework built on a heterogeneous graph that unifies hyperlink topology between pages, DOM hierarchy within pages, and entity-relation knowledge across pages.

Ying Liu, Yingzi Ye, Quan Feng et al. · 0 citations

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