sc::HessianUpdate Class Reference

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

#include <update.h>

Inheritance diagram for sc::HessianUpdate:

sc::SavableState sc::DescribedClass sc::RefCount sc::Identity sc::DFPUpdate sc::PowellUpdate sc::BFGSUpdate List of all members.

Public Member Functions

 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.
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_

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).


Member Function Documentation

void sc::HessianUpdate::save_data_state ( StateOut  )  [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 sc::SavableState.

Reimplemented in sc::DFPUpdate, sc::BFGSUpdate, and sc::PowellUpdate.


The documentation for this class was generated from the following file:
Generated at Mon Dec 3 23:23:56 2007 for MPQC 2.3.1 using the documentation package Doxygen 1.5.2.