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Shazeer and Stern: Adafactor factored optimizer state

Approximated matrix-valued second-moment accumulators from row and column statistics and combined update clipping, decay scheduling and relative-step scaling for low-memory adaptive optimization.

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Approximated matrix-valued second-moment accumulators from row and column statistics and combined update clipping, decay scheduling and relative-step scaling for low-memory adaptive optimization.

Source-linked catalogue note. A detailed explanatory guide has not yet been prepared for this entry.

Scientific scope

The O(n+m) auxiliary-state saving refers to a matrix's factored second moment, not all training memory. Translation experiments do not guarantee Adam-equivalent behavior for arbitrary models; no dense nonconvex convergence proof is claimed.

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People and systems

Noam Shazeer; Mitchell Stern

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.

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English catalogue narrative

Shazeer and Stern: Adafactor factored optimizer state

Approximated matrix-valued second-moment accumulators from row and column statistics and combined update clipping, decay scheduling and relative-step scaling for low-memory adaptive optimization.

Scientific scope

The O(n+m) auxiliary-state saving refers to a matrix's factored second moment, not all training memory. Translation experiments do not guarantee Adam-equivalent behavior for arbitrary models; no dense nonconvex convergence proof is claimed.

Reading status

This is a source-linked WRS catalogue note. A full explanatory guide and independent scientific reconstruction have not been completed for this entry. Read the identified original work for its complete narrative and arguments.

People and systems

Noam Shazeer; Mitchell Stern

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.

Original sources