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#artificial intelligence Preprint Oct 2026

UMAS: System-Level Uncertainty Quantification for Multi-Agent LLM Systems

Multi-Agent Systems (MAS) are a promising paradigm for improving the reasoning capabilities of large language models, yet they remain prone to hallucinations and erroneous outputs. Uncertainty Quantification (UQ) is crucial for assessing system reliability, but existing methods are largely designed for single-agent set...

Han Li, Jinhao Duan, Xiao-Shuang Shi et al. · 0 citations
#artificial intelligence Preprint Oct 2026

STRATA: Self-Maintaining Structured Experience Graphs for Self-Evolving Language Agents

Large language model (LLM) agents can self-evolve at test time by accumulating experience: retrieving relevant memories before acting and writing new lessons back afterwards. Yet most are single-level: trajectories, distilled workflows and reasoning items all land in one undifferentiated pool indexed by embedding simil...

Guan-Hua Zhu, Han Li, Zhi Wei et al. · 0 citations
#artificial intelligence Preprint Oct 2026

From Uncertainty to Action: Learning to Steer LLM Agents

Steering an LLM agent means deciding whether to correct it, at which step, and with which mechanism. Uncertainty is often used to decide when to correct an agent, but whether it can guide these decisions remains unclear. We steer agent trajectories separately at every non-terminal step with each of four mechanisms and...

Han Li, Jinhao Duan, Guan-Hua Zhu et al. · 0 citations

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