| sc::HessianUpdate(3) | MPQC | sc::HessianUpdate(3) |
sc::HessianUpdate - The HessianUpdate abstract class is used to specify a hessian update scheme.
#include <update.h>
Inherits sc::SavableState.
Inherited by sc::DFPUpdate, and sc::PowellUpdate.
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 > &)
int inverse_hessian_
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).
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.
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| Sun Oct 4 2020 | Version 2.3.1 |