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Ze-Kai Chen

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#machine learning Preprint Oct 2026

No-Free-Graph: Learning When Multimodal Data Should Be Graphified

Multimodal graph learning has recently emerged as an effective paradigm for in corporating inter-entity relationships into multimodal representations. Existing studies have made substantial progress on how to construct and optimize graphs, but rarely consider a more fundamental question: whether additional relational s...

Ze-Kai Chen, Kai Hu, Yu-Xin Zeng et al. · 0 citations
#machine learning Preprint Sep 2026

MOVE: Multimodal Open-world Verification and Expansion for Graph Learning

Multimodal graph learning faces a fundamental challenge: new classes may emerge after deployment, while models are trained with a fixed label space. Existing approaches typically detect unknown nodes and use LLMs to generate candidate class descriptions, but they do not determine whether existing classes are insufficie...

Ze-Kai Chen, Jia-Yang Xing, Xun Wu et al. · 0 citations
#machine learning Preprint Sep 2026

MAGIC: Mixed-Granularity Agent Graphs via Incremental Construction with Dense-Reward Reinforcement Learning

Collaboration topology shapes both the performance and execution cost of LLM-based multi-agent systems. Because tasks differ in complexity and required capabilities, recent approaches generate task-specific collaboration graphs that specify agent participation and information flow. However, representative topology gene...

Kai-Rui Yang, Zi-Heng Yi, Xun-Kai Li et al. · 0 citations
#machine learning Preprint Sep 2026

OpenMAS-GCom. A Diagnostic Benchmark for Graph-enhanced Multi-Agent Systems

OpenMAS-GCom is introduced, a benchmark for diagnosing how these components affect G-MAS performance through controlled interventions, and 400 G-MAS-Complex tasks requiring agents to combine information from multiple documents, resolve conflicting records, and return specified values with source identifiers are added.

Kai-Rui Yang, Xun-Kai Li, Kai-Xiang Zhang et al. · 0 citations
#machine learning Preprint Sep 2026

Towards Unified Multimodal Graph Foundation Model: A Bridge-Router-Adapter Based Approach

BRAIN is a unified model that focuses on graph context that combines neighborhood scope with modality composition that improves node-classification and link-prediction performance and achieves an average relative improvement of 14.72% across four graph-to-text and two graph-to-image metrics.

Si Zhang, Yu-Bing Zhou, Xun-Kai Li et al. · 0 citations
Jul 2026

FedOGL: Combating Catastrophic Forgetting in Federated Open-World Multimodal Graph Learning

FedOGL preserves historical decision behavior through replay and task-start distillation, while protecting graph-propagation memory via projection onto a globally shared structure basis via projection onto a globally shared structure basis.

Ze-Kai Chen, Haodong Lu, Shi-Hao Li et al. · 0 citations
Jul 2026

OpenRTAG: A Comprehensive Benchmark for Robust Text-Attributed Graph Learning under Data Quality Degradation

OpenRTAG provides a standardized testbed for understanding robustness in TAG learning under realistic low-quality settings and systematically evaluates scenario validity and model sensitivity, compares traditional GNNs, LLM-GNNs, and a representative GFM, and investigates the effectiveness, efficiency, and robustness o...

Yu-Ze Dai, Zhi-Han Zhang, Yan Zhao et al. · 0 citations
Preprint Jul 2026

MMFGU: Multimodal Federated Graph Unlearning

A multimodal federated graph unlearning framework built around target-specific representation decoupling that effectively removes requested information, preserves retained graph utility, and achieves a speedup over full retraining.

Haodong Lu, Zekai Chen, Weiwei Ji et al. · 0 citations

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