sc::HessianUpdate(3) MPQC sc::HessianUpdate(3)NAME
sc::HessianUpdate - The HessianUpdate abstract class is used to specify
a hessian update scheme.
SYNOPSIS
#include <update.h>
Inherits sc::SavableState.
Inherited by sc::DFPUpdate, and sc::PowellUpdate.
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_
Additional Inherited Members
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::PowellUpdate, sc::BFGSUpdate, and sc::DFPUpdate.
Author
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Version 2.3.1 Fri Feb 19 2016 sc::HessianUpdate(3)
