This operator computes the product of a vector with the approximate inverse of the Hessian of the objective function, using the L-BFGS limited memory approximation to the inverse Hessian, accumulated during the optimization.
Objects of this class implement the scipy.sparse.linalg.LinearOperator
interface.
Array of :None:None:`n_corr` most recent updates to the solution vector. (See [1]).
Array of :None:None:`n_corr` most recent updates to the gradient. (See [1]).
Linear operator for the L-BFGS approximate inverse Hessian.
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