BWhat changed
Related a half-power Shampoo variant to Adafactor in its preconditioner eigenbasis and evaluated Adam-style updates in that slowly updated basis.
Scientific scope
Related a half-power Shampoo variant to Adafactor in its preconditioner eigenbasis and evaluated Adam-style updates in that slowly updated basis. Explicitly synthesizes earlier preconditioning/rotated-space variants; systematic evaluation is not first invention of all components. Equivalence concerns a specified Shampoo exponent/variant. Reported savings use tuned360M/660M runs; matrix-state/eigendecomposition costs remain.
Evidence
The linked original sources describe the stated contribution and its evidence limits. WRS has not independently rerun the experiments or certified a proof. Explicitly synthesizes earlier preconditioning/rotated-space variants; systematic evaluation is not first invention of all components. Equivalence concerns a specified Shampoo exponent/variant. Reported savings use tuned360M/660M runs; matrix-state/eigendecomposition costs remain.
Contributors
- Source-listed authors and technical contributors · SCIENCE: Source-listed authors or explicitly credited technical contributors for the cited versions. Family entries retain source-specific attribution; a combined list is not one original-paper byline or equal individual work. Names alone do not establish resolved identities.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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