bundles / scipy latest / scipy / optimize / _hessian_update_strategy / HessianUpdateStrategy / update

function

`scipy.optimize._hessian_update_strategy:HessianUpdateStrategy.update`

source: /scipy/optimize/_hessian_update_strategy.py :55

Signature

def update ( self , delta_x , delta_grad )

Summary

Update internal matrix.

Extended Summary

Update Hessian matrix or its inverse (depending on how 'approx_type' is defined) using information about the last evaluated points.

Parameters

delta_x : ndarray: The difference between two points the gradient function have been evaluated at: delta_x = x2 - x1.
delta_grad : ndarray: The difference between the gradients: delta_grad = grad(x2) - grad(x1).

Aliases

scipy.optimize.HessianUpdateStrategy.update