update_hess_vec: Update Hessian-vector product (SQN)
In stochQN: Stochastic Limited Memory Quasi-Newton Optimizers

Update the (expected) values of the Hessian-vector product in an 'SQN_free' object, after it has been requested by the optimizer (do NOT update it otherwise).

1	update_hess_vec(optimizer, hess_vec)

`optimizer`	An 'SQN_free' optimizer which after the last run had requested a new Hessian-vector evaluation.
`hess_vec`	The (expected) value of the Hessian evaluated at the values of 'x' that were returned in the request, multiplied by the vector that was returned in the same request. Must be a numeric vector.

No return value (object is updated in-place).

stochQN documentation built on Sept. 26, 2021, 9:07 a.m.