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Author

Dian Shao

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Preprint Sep 2026

Beyond Agent Harnesses: Cross-Substrate Authority for Multi-Agent Systems

Agentic systems persist model-visible memory while mutating workspaces, while a runtime, registry, or approval service may hold authority state outside both. Identical final files can then require opposite safe actions. We call this the cross-substrate authority gap: decision- relevant authorization information resides...

Yang Li, Sergey Volkov, Hai Liu et al. · 0 citations
Preprint Jul 2026

Agent-UCT: Upper Confidence Bounds Applied to Trees for Agentic Workflow Optimization with Cost-Awareness

This work introduces Agent-UCT, a tree search algorithm that extends UCT with a reuse-aware regularization term derived from a bipartite prefix reuse graph, and RAGSpace, a unified framework for cost-aware, reproducible, and compositionally efficient agentic workflow optimization.

Yang Li, Hai Liu, Dian Shao et al. · 0 citations

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