Package de.labathome.trustconstr.interfaces

Interface HessianProduct

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface HessianProduct

A matrix-free Hessian: given the current point x and a vector p, return H(x) p. Mirrors the hessp(x, p, *args) callable from scipy's minimize(method='trust-constr') API. Pairs with HessianLinearOperator, which adapts a HessianProduct to the explicit-matrix slot used elsewhere in the port.

Method Summary

Modifier and Type	Method	Description
Matrix	apply(Matrix x, Matrix p, Object args)

Method Details

apply

Matrix apply(Matrix x,
 Matrix p,
 Object args)

Parameters:

x - [n] current point

p - [n] vector to multiply

args - optional extra arguments forwarded by the caller

Returns:

[n] result of H(x) p