Author

Glenn Grant-Richards

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#artificial intelligence Preprint Sep 2026

Component and Dimension Sparsity in Transformer Refusal Mechanisms

Together these findings show that refusal is not diffusely encoded across a transformer but assembled by a structured, identifiable mechanism, providing a foundation for mechanistic understanding of how refusal behaviors are represented and steered.

Vincent Siu, Glenn Grant-Richards, Vlad Pavlovich et al. · 0 citations

Jul 2026

The Capacity of Thought: Benchmarking Llama 3.2 in Semantic fMRI Neural Language Decoding and Improving the Huth Encoding-Model Baseline

The results demonstrate that high-capacity language models do not inherently improve fMRI decoding and can actively obscure failures without rigorous blind-control evaluation.

Miško šuvaković, Dom Marhoefer, Glenn Grant-Richards et al. · arXiv.org · 0 citations