Package de.labathome.trustconstr

Class IdentityVectorFunction

java.lang.Object

de.labathome.trustconstr.LinearVectorFunction

de.labathome.trustconstr.IdentityVectorFunction

All Implemented Interfaces:

VectorFunctionLike

public class IdentityVectorFunction
extends LinearVectorFunction

Identity vector function f(x) = x (Jacobian I). Used by PreparedConstraint when a Bounds object is folded into the constraint set.

Counterpart to scipy's IdentityVectorFunction (scipy/optimize/_differentiable_functions.py:829).

Field Summary

Fields inherited from class de.labathome.trustconstr.LinearVectorFunction

A, f, fUpdated, H, m, n, sparseJacobian, v, x

Constructor Summary

Constructors

Constructor	Description
IdentityVectorFunction(Matrix x0, Optional<Boolean> sparseJacobian)	Build an identity vector function sized for the iterate x0.

Method Summary

Methods inherited from class de.labathome.trustconstr.LinearVectorFunction

f, fun, hess, J, jac, m, n, sparseJacobian, v

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface de.labathome.trustconstr.interfaces.VectorFunctionLike

numFunctionEvals, numHessianEvals, numJacobianEvals

Constructor Details

IdentityVectorFunction

public IdentityVectorFunction(Matrix x0,
 Optional<Boolean> sparseJacobian)

Build an identity vector function sized for the iterate x0.

Parameters:

x0 - starting iterate (n x 1)

sparseJacobian - Optional.of(true) or Optional.empty() stores I sparse; Optional.of(false) stores it dense