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Surrogate optimization of variational quantum circuits. [PDF]

open access: yesProc Natl Acad Sci U S A
Gustafson EJ   +10 more
europepmc   +1 more source

The Conjugate Gradient Method

Numerische Mathematik, 2020
The CG-algorithm is an iterative method to solve linear systems $$Ax + b = 0$$ (1) where A is a symmetric and positive definite coefficient matrix of order n. The method has been described first by Stiefel and Hesteness [1, 2] and additional information is contained in [3] and [4]. The notations used here coincide partially with those used in
T. Lyche
semanticscholar   +6 more sources

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