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R. Wang

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#machine learning Preprint Aug 2026

The Communication Map of a Transformer

The communication map, which charts every potential communication channel from the geometry of the model's weights alone, generalizing the composition score of Elhage et al. (2021), is presented and an account of the properties of the coupling coefficient is provided, including its geometric interpretation and its exac...

R. Wang · 1 citation

Confidently Wrong: Detecting Hallucinations in Financial Question Answering from LLM Internal States

Probing can be a cost-effective triage mechanism for routing LLM answers to human review and quality control procedures in high-stakes financial applications and shows that among confident answers, those for which all eight resamples agree, 15-23% are wrong on FinQA.

R. Wang · 0 citations

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