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HessianUpdate Class Reference

The HessianUpdate abstract class is used to specify a hessian update scheme. More...

#include <update.h>

Inheritance diagram for HessianUpdate

[legend]Collaboration diagram for HessianUpdate:

[legend]List of all members.

Public Methods
	HessianUpdate ()
	HessianUpdate (StateIn &)
	HessianUpdate (const Ref< KeyVal > &)
void	save_data_state (StateOut &)
	Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. More...
virtual	~HessianUpdate ()
virtual void	update (const RefSymmSCMatrix &hessian, const Ref< Function > &, const RefSCVector &xnew, const RefSCVector &gnew)=0
virtual void	set_inverse ()
virtual void	apply_transform (const Ref< NonlinearTransform > &)
Protected Attributes
int	inverse_hessian_

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Detailed Description

The HessianUpdate abstract class is used to specify a hessian update scheme.

It is used, for example, by QNewtonOpt objects. Based on the value of inverse_hessian_ x and g may be reversed (see Schlegel, Ab initio Methods in Quantum Chemistry I, 1987, p 10).

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Member Function Documentation

void HessianUpdate::save_data_state ( StateOut & s ) [virtual]

Save the base classes (with save_data_state) and the members in the same order that the StateIn CTOR initializes them. This must be implemented by the derived class if the class has data. Reimplemented from SavableState. Reimplemented in DFPUpdate, BFGSUpdate, and PowellUpdate.

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The documentation for this class was generated from the following file:

• update.h

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