scipy.optimize.SR1.

initialize

SR1.initialize(n, approx_type)

Initialize internal matrix.

Allocate internal memory for storing and updating the Hessian or its inverse.

Parameters:

nint

Problem dimension.

approx_type{‘hess’, ‘inv_hess’}

Selects either the Hessian or the inverse Hessian. When set to ‘hess’ the Hessian will be stored and updated. When set to ‘inv_hess’ its inverse will be used instead.