matrices - How is the preconditioned conjugate gradient algorithm related to the steepest descent method? - Mathematics Stack Exchange

There is a method to greatly simplify the preconditioned conjugate method into the steepest descent method, also known as gradient descent. I'm aware that the gradient is equal to $$2A^t(A\vec{x}

calculus - Newton conjugate gradient algorithm - Mathematics Stack Exchange

Solved Here we implement the preconditioned steepest descent

Projected gradient descent algorithms for quantum state tomography

Conjugate gradient method - Wikipedia

Preconditioned conjugate gradient method for finding minimal energy surfaces on Powell–Sabin triangulations - ScienceDirect

Direct and Iterative Solvers

Preconditioned nonlinear conjugate gradient method for micromagnetic energy minimization - ScienceDirect

Preconditioned nonlinear conjugate gradient method for micromagnetic energy minimization - ScienceDirect

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Conjugate gradient method - Wikipedia

Distributed estimation over sensor networks based on distributed conjugate gradient strategies - Xu - 2016 - IET Signal Processing - Wiley Online Library

Distributed estimation over sensor networks based on distributed conjugate gradient strategies - Xu - 2016 - IET Signal Processing - Wiley Online Library

Solved Here we implement the preconditioned steepest descent