Quantum Methods

Global Coupled Adaptive Number of Shots

Introduced by Gu et al. in Adaptive shot allocation for fast convergence in variational quantum algorithms

gCANS, or Global Coupled Adaptive Number of Shots, is a variational quantum algorithm for stochastic gradient descent. It adaptively allocates shots for the measurement of each gradient component at each iteration. The optimizer uses a criterion for allocating shots that incorporates information about the overall scale of the shot cost for the iteration.

Source: Adaptive shot allocation for fast convergence in variational quantum algorithms

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