Author

Rui Xu

2 papers indexed here

We haven’t gathered this author’s papers yet. Follow them and we’ll fetch their work.

Not the right person? Other researchers publish under this name.

#artificial intelligence Preprint Sep 2026

PersonaManifold: Revealing and Exploiting Curved Geometry in LLM Persona Representations

Experiments on three open-source LLMs show that persona activations form a manifold with heterogeneous curvature, geodesic distance predicts behavioral similarity more accurately than Euclidean alternatives with independent contributions from anisotropy and curvature, and geodesic steering produces more coherent interm...

Rui Xu, Ying-Hui Xu, Li-Bo Wu · 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