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The Gradient Does Not See Rank: Rank-Indifference in Matrix-CODI on ProsQA

This story is from 2026-09-04. It is preserved in the archive; the latest stories are on the live feed.

arXiv:2609.03090v1 Announce Type: new Abstract: Continuous chain-of-thought models compress reasoning into latent tokens. Matrix-valued variants, which route each latent token through a d x d matrix bottleneck, introduce rank as a single-sample structural observable on the latent matrix Z. If matri…

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  1. 2026-09-04 04:00 · arXiv cs.LG
    The Gradient Does Not See Rank: Rank-Indifference in Matrix-CODI on ProsQA

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