perf(linalg): scores-based CR2 Bell-McCaffrey DOF (algebraic identity; PT2018 §3.1 Satterthwaite)#656

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perf/cr2-bm-scores-dof

Jul 9, 2026

Commits on Jul 9, 2026

perf(linalg): scores-based CR2 Bell-McCaffrey DOF (PT2018 Appendix B)

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perf+docs(linalg): contrast-chunk the CR2-BM product buffers (review P2) + doc syncs (P3s)

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docs(linalg): correct the scores-based-evaluation citation (review P2)

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test+docs: chunk-count invariance is ~1 ULP, not bit-for-bit (CI failure fix)

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docs(linalg): bit-equal wording + citation precision (review optional P3s)

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perf(linalg): row-chunk the (G,G) pairwise CR2-BM matrix under the byte cap

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perf(linalg): contrast-chunk the q/omega score arrays; scope remaining docstring claims

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perf(linalg): count every width-scaled buffer in the CR2-BM chunk denominator

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docs(registry): PT2018 Satterthwaite DOF is §3.1 Eq. 11 (q=1 reduction of AHT Eq. 13)

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docs(linalg): one-way BM comment says dense prior evaluation, not scores-based

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