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Pei-Yu Zhang

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#artificial intelligence Preprint Oct 2026

Beyond Final Accuracy: Auditing Communication in LLM Multi-Agent Systems

Multi-agent communication aims to help agents benefit from one another's information. Yet improvements in system performance leave a fundamental ambiguity: do they reflect effective communication, a favorable agent architecture, or simply additional reasoning? Because communication methods are commonly evaluated within...

Shi-Xuan Li, Wei Yang, Pei-Yu Zhang et al. · 0 citations
#machine learning Preprint Sep 2026

HyperLabel: Multi-Label Classification via Hypergraph-Based Label Correlation Modeling

This work proposes HyperLabel, an encoder-decoder framework that explicitly models label dependencies through hypergraph neural networks, and proposes a unified cross-modal learning approach where HGNN+ performs bidirectional message passing to integrate feature information with label structure, and a shared cross-atte...

Pei-Yu Zhang, Heng Ping, Nikos Kanakaris et al. · 0 citations
#machine learning Preprint Sep 2026

Beyond Feature Reliability: Repeat-Informed Multifractal Curve Regression for Brain-Age Prediction

Brain-age prediction from resting-state fMRI provides a quantitative framework for characterizing age-related changes in spontaneous brain dynamics and for identifying functional signatures. Existing studies have linked fractal and multifractal scaling to age and examined the reliability of individual features. However...

Yu Chang, An-Zhe Cheng, Jia-Hao Chen et al. · 0 citations

Auditing Multi-Agent LLM Reasoning Trees Outperforms Majority Vote and LLM-as-Judge

AgentAuditor is introduced, which moves beyond frequency-based aggregation by organizing agent traces into a Reasoning Tree that explicitly represents agreements and divergences in their reasoning, and Anti-Consensus Preference Optimization (ACPO), which trains the adjudicator with evidence-verified preference supervis...

Wei Yang, Shi-Xuan Li, Heng Ping et al. · 18 citations
#artificial intelligence Preprint Jun 2026

CARE: Context-Aware Ranking Evolution with Executable Scoring Programs for Budgeted Reaction Optimization

CARE is introduced, a reference-conditioned controller that separates program synthesis from experiment selection and attains the lowest normalized regret, the highest normalized best-so-far AUC, and the highest Top-1% Success@15 among the evaluated methods.

Guanyu Liu, Weiyi Kong, Chao Tang et al. · 1 citation

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