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Zi-Cheng Zhao

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#artificial intelligence Preprint Sep 2026

OSPD: On-Policy Self-Distillation for Persona-Consistent Dialogue

This work proposes OSPD, an on-policy self-distillation framework where the same model serves as both teacher and student under asymmetric information: the teacher receives a complete character profile while the student sees only a brief summary, and the student generates trajectories from its own policy.

Rui Xu, Yikai Zhang, Ai-Li Chen et al. · 0 citations
#artificial intelligence Preprint Sep 2026

HyperReCo: Retrieving and Connecting Evidence with Hypergraph Neural Networks for LLM Multi-hop Reasoning

This work proposes HyperReCo, a framework for retrieving and connecting evidence with a hypergraph neural network (HyperGNN), and introduces Gradient-Guided Hyper-Path Decoding (GGHD), which uses gradient attribution to interpret the learned interactions and translate them into explicit hyper-paths that help LLMs combi...

Zi-Cheng Zhao, Lin-Hao Luo, Jun-Nan Dong et al. · 0 citations
#artificial intelligence Preprint Sep 2026

PolyBridgeBench: Benchmarking Multimodal LLMs for Physics-Grounded Bridge Design

PolyBridgeBench, an executable benchmark for multimodal bridge design, is introduced, an executable benchmark for multimodal bridge design that returns temporal visual evidence from the failed rollout and evaluates repair under a fixed interaction budget.

Zi-Cheng Zhao, Dong Chen, Rui Xu et al. · 0 citations

QUACK: Questioning, Understanding, and Auditing Communicated Knowledge in Multimodal Social Deduction Agents

Evaluating three frontier VLMs in both homogeneous and cross-model adversarial settings, it is found that even the strongest agent hallucinates 15.1% of its verifiable spatial claims and 11.5% of accusations are strictly unsupported.

Ye Yuan, Ruiqi Song, Wei-En Li et al. · 2 citations

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