Author

Yuqi Wu

2 papers indexed here

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Preprint Aug 2026

When Is a Steerable Concept Representation Real? Measurement Confounds in a Cross-Family Audit of Neuroscience Parallels in LLMs

Large language models (LLMs) are increasingly reported to exhibit human-like neural and cognitive signatures, including concept cells, mental number lines, and cognitive maps. These claims often rely on linear probing and activation steering applied to a single model, yet both methods are highly sensitive to measuremen...

Yuqi Wu, Shengming Zhao, Jie Chen · 3 citations

Preprint Aug 2026

TokenPrint: A Calibrated Token-Space Fingerprint for Language-Model Provenance

A training-free fingerprint based on the top-$k$ vocabulary projections of late hidden states elicited by 250 fixed knowledge probes is introduced, compared using Jaccard overlap over decoded token strings to suggest a contribution from shared training data beyond capability convergence.

Yuqi Wu, Shengming Zhao, Jie Chen · 1 citation