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Yubo Li

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#artificial intelligence Preprint Oct 2026

Reading Right, Acting Wrong: Diagnosing Decision Failures of System One Models in Agent Loops

System One models choose an agent's next action by scoring a supplied set of options in a single pass. This makes them fast and cheap, but when they choose wrongly there is nothing to inspect: did the model misread what the agent has seen, or read it correctly and still act wrongly? We answer behaviorally. On a frozen...

Yubo Li, Ramayya Krishnan, Rema Padman · 0 citations
#artificial intelligence Preprint Sep 2026

JEV-as-a-Judge: Accept When Confident, Escalate When Unsure

LLM-as-a-judge scales evaluation, but reasoning judges are slow and costly. We study JEV-as-a-Judge: evaluation with JEV, a decision-only judge that returns label probabilities instead of text, and whose confidence decides whether to accept its verdict or escalate to a reasoning judge. Against sixteen generative and re...

Yubo Li, Yidi Miao, Ramayya Krishnan et al. · 12 citations · ⚡3
Review Jul 2026

Dynamic Agent Skills: A Lifecycle Survey and Taxonomy of Evolving Skill Libraries

A taxonomy-driven survey asks how dynamic skill libraries change over time in large language model agents, and synthesizes dynamic skill systems as lifecycle-managed, verified, evolving artifact stores.

Yubo Li · 2 citations

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