ROL
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ROL::ScalarMinimizationLineSearch_U< Real > Class Template Reference

Implements line search methods that attempt to minimize the scalar function \(\phi(t) := f(x+ts)\). More...

#include <ROL_ScalarMinimizationLineSearch_U.hpp>

+ Inheritance diagram for ROL::ScalarMinimizationLineSearch_U< Real >:

Classes

class  Phi
 
class  StatusTest
 

Public Member Functions

 ScalarMinimizationLineSearch_U (ParameterList &parlist, const Ptr< ScalarMinimization< Real > > &sm=nullPtr, const Ptr< Bracketing< Real > > &br=nullPtr, const Ptr< ScalarFunction< Real > > &sf=nullPtr)
 
void initialize (const Vector< Real > &x, const Vector< Real > &g) override
 
void run (Real &alpha, Real &fval, int &ls_neval, int &ls_ngrad, const Real &gs, const Vector< Real > &s, const Vector< Real > &x, Objective< Real > &obj) override
 
- Public Member Functions inherited from ROL::LineSearch_U< Real >
virtual ~LineSearch_U ()
 
 LineSearch_U (ParameterList &parlist)
 
void setMaxitUpdate (Real &alpha, Real &fnew, const Real &fold)
 

Private Attributes

Ptr< Vector< Real > > xnew_
 
Ptr< Vector< Real > > g_
 
Ptr< ScalarMinimization< Real > > sm_
 
Ptr< Bracketing< Real > > br_
 
Ptr< ScalarFunction< Real > > sf_
 
ECurvatureConditionU econd_
 
Real c1_
 
Real c2_
 
Real c3_
 
int max_nfval_
 
bool FDdirDeriv_
 

Additional Inherited Members

- Protected Member Functions inherited from ROL::LineSearch_U< Real >
virtual bool status (const ELineSearchU type, int &ls_neval, int &ls_ngrad, const Real alpha, const Real fold, const Real sgold, const Real fnew, const Vector< Real > &x, const Vector< Real > &s, Objective< Real > &obj)
 
virtual Real getInitialAlpha (int &ls_neval, int &ls_ngrad, const Real fval, const Real gs, const Vector< Real > &x, const Vector< Real > &s, Objective< Real > &obj)
 
void setNextInitialAlpha (Real alpha)
 
bool useLocalMinimizer ()
 
bool takeNoStep ()
 

Detailed Description

template<typename Real>
class ROL::ScalarMinimizationLineSearch_U< Real >

Implements line search methods that attempt to minimize the scalar function \(\phi(t) := f(x+ts)\).

Definition at line 62 of file ROL_ScalarMinimizationLineSearch_U.hpp.

Constructor & Destructor Documentation

◆ ScalarMinimizationLineSearch_U()

template<typename Real >
ROL::ScalarMinimizationLineSearch_U< Real >::ScalarMinimizationLineSearch_U ( ParameterList & parlist,
const Ptr< ScalarMinimization< Real > > & sm = nullPtr,
const Ptr< Bracketing< Real > > & br = nullPtr,
const Ptr< ScalarFunction< Real > > & sf = nullPtr )
inline

Member Function Documentation

◆ initialize()

template<typename Real >
void ROL::ScalarMinimizationLineSearch_U< Real >::initialize ( const Vector< Real > & x,
const Vector< Real > & g )
inlineoverridevirtual

◆ run()

template<typename Real >
void ROL::ScalarMinimizationLineSearch_U< Real >::run ( Real & alpha,
Real & fval,
int & ls_neval,
int & ls_ngrad,
const Real & gs,
const Vector< Real > & s,
const Vector< Real > & x,
Objective< Real > & obj )
inlineoverridevirtual

Member Data Documentation

◆ xnew_

template<typename Real >
Ptr<Vector<Real> > ROL::ScalarMinimizationLineSearch_U< Real >::xnew_
private

◆ g_

template<typename Real >
Ptr<Vector<Real> > ROL::ScalarMinimizationLineSearch_U< Real >::g_
private

◆ sm_

template<typename Real >
Ptr<ScalarMinimization<Real> > ROL::ScalarMinimizationLineSearch_U< Real >::sm_
private

◆ br_

template<typename Real >
Ptr<Bracketing<Real> > ROL::ScalarMinimizationLineSearch_U< Real >::br_
private

◆ sf_

template<typename Real >
Ptr<ScalarFunction<Real> > ROL::ScalarMinimizationLineSearch_U< Real >::sf_
private

◆ econd_

template<typename Real >
ECurvatureConditionU ROL::ScalarMinimizationLineSearch_U< Real >::econd_
private

◆ c1_

template<typename Real >
Real ROL::ScalarMinimizationLineSearch_U< Real >::c1_
private

◆ c2_

template<typename Real >
Real ROL::ScalarMinimizationLineSearch_U< Real >::c2_
private

◆ c3_

template<typename Real >
Real ROL::ScalarMinimizationLineSearch_U< Real >::c3_
private

◆ max_nfval_

template<typename Real >
int ROL::ScalarMinimizationLineSearch_U< Real >::max_nfval_
private

◆ FDdirDeriv_

template<typename Real >
bool ROL::ScalarMinimizationLineSearch_U< Real >::FDdirDeriv_
private

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