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Xiaopeng Yuan

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#machine learning Preprint Oct 2026

Objects Without Morphisms: What LLMs for Mathematics Do Not Represent

Large language models (LLMs) have reached expert-level performance on competition mathematics largely through the volume of search placed around them: candidate solutions are sampled in quantity and retained only when an external criterion accepts them. Such a procedure improves the outcome that survives it while leavi...

Yan-Lin Wang, Sui-Jin Wang, Xiao-Peng Yuan et al. · 0 citations
#artificial intelligence Preprint Sep 2026

Composing Task-specific Agent Harnesses at Test Time with Reusable Primitives

Agent harnesses govern how large language models (LLMs) gather context, invoke tools, verify results, preserve state, and terminate, largely affecting agent performance. However, the value of each harness mechanism can differ across heterogeneous tasks: a mechanism that improves one task may impose overhead or context...

Peng Kuang, Hai-Bo Jin, De-Hao Wu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

ANTMAN: Adaptive Need Tracking for Multi-Agent Navigation in Large Information Spaces

ANTMAN is introduced, an adaptive coordination framework that treats evolving unresolved information needs as the unit of runtime coordination and maintains a revisable Need Graph that tracks unresolved requirements, accumulated evidence, prior attempts, and search progress.

Jerry Wang, Hai-Bo Jin, Xiao-Peng Yuan et al. · 0 citations
Preprint Aug 2026

Beyond Asking: A Pipeline for Personalized Game Generation that Reads Players from Behavior

A synthetic player population is constructed whose traits are ground truth by construction, and an opportunity-aware decision-moment representation is introduced that disentangles preference from the chance to express it; ablating it selectively degrades opportunity-dependent traits.

Yifan Lu, Xiaopeng Yuan, Hao-Han Wang · 0 citations

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