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Re:The early History of the Singular Value Decomposition (19... by jmalicki on Saturday July 11, 2026 @03:29PM (#48874993)
The second moments of the gradient and the Hessian are absolutely related!

See the Fisher Information, and the Cramer-Rao Lower Bound (an inequality on how much the inverse covariance matrix and the Hessian can differ).

https://en.wikipedia.org/wiki/Fisher_information

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