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Author

Ya Cui

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Preprint Aug 2026

Reconcile Once, Write Anytime: A Trust-Tiered Librarian and a Multi-Agent Writer for Drift-Free, Point-in-Time Research

Long-form research reports generated by large language models drift, contradict themselves, and lose provenance: the same metric appears with different values, and rumor is quoted as confidently as an audited filing. We present a two-tier agentic system that separates a maintained, point-in-time knowledge library from...

Xing Zhang, Ya Cui, Guanghui Wang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

UnitBoost: Managing Compound LLM Systems with a Merge Operator, Not a Model

Compound LLM systems often solve a coordination problem by adding a higher-level LLM. The resulting meta-agent reads workers'outputs, writes the final answer, allocates later calls, and decides when to stop. It is expressive, but it also concentrates three control decisions in an opaque, order-sensitive model call. We...

Xing Zhang, Guang-Hui Wang, Ya Cui et al. · 0 citations
Jul 2026

Who Grades the Grader? Co-Evolving Evaluation Metrics and Skills for Self-Improving LLM Agents

It is shown the metric itself can be the evolving object: the loop searches compositions of small typed drawback detectors under a full evolutionary lifecycle, selecting for agreement with a ten-item anchored reference set and regularizing by consensus over unlabeled outputs.

Xing Zhang, Guanghui Wang, Ya Cui et al. · 0 citations

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