ROL
Classes | Public Member Functions | Private Attributes | List of all members
ROL::ScalarMinimizationLineSearch< Real > Class Template Reference

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

#include <ROL_ScalarMinimizationLineSearch.hpp>

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

Classes

class  LineSearchStatusTest
 
class  Phi
 

Public Member Functions

 ScalarMinimizationLineSearch (Teuchos::ParameterList &parlist, const Teuchos::RCP< ScalarMinimization< Real > > &sm=Teuchos::null, const Teuchos::RCP< Bracketing< Real > > &br=Teuchos::null, const Teuchos::RCP< ScalarFunction< Real > > &sf=Teuchos::null)
 
void initialize (const Vector< Real > &x, const Vector< Real > &s, const Vector< Real > &g, Objective< Real > &obj, BoundConstraint< Real > &con)
 
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, BoundConstraint< Real > &con)
 
- Public Member Functions inherited from ROL::LineSearch< Real >
virtual ~LineSearch ()
 
 LineSearch (Teuchos::ParameterList &parlist)
 
void setData (Real &eps, const Vector< Real > &g)
 
void setMaxitUpdate (Real &alpha, Real &fnew, const Real &fold)
 

Private Attributes

Teuchos::RCP< Vector< Real > > xnew_
 
Teuchos::RCP< Vector< Real > > g_
 
Teuchos::RCP< ScalarMinimization< Real > > sm_
 
Teuchos::RCP< Bracketing< Real > > br_
 
Teuchos::RCP< ScalarFunction< Real > > sf_
 
ECurvatureCondition econd_
 
Real c1_
 
Real c2_
 
Real c3_
 
int max_nfval_
 

Additional Inherited Members

- Protected Member Functions inherited from ROL::LineSearch< Real >
virtual bool status (const ELineSearch 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, BoundConstraint< Real > &con)
 
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, BoundConstraint< Real > &con)
 
void setNextInitialAlpha (Real alpha)
 
void updateIterate (Vector< Real > &xnew, const Vector< Real > &x, const Vector< Real > &s, Real alpha, BoundConstraint< Real > &con)
 
bool useLocalMinimizer ()
 
bool takeNoStep ()
 

Detailed Description

template<class Real>
class ROL::ScalarMinimizationLineSearch< 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.hpp.

Constructor & Destructor Documentation

◆ ScalarMinimizationLineSearch()

template<class Real >
ROL::ScalarMinimizationLineSearch< Real >::ScalarMinimizationLineSearch ( Teuchos::ParameterList &  parlist,
const Teuchos::RCP< ScalarMinimization< Real > > &  sm = Teuchos::null,
const Teuchos::RCP< Bracketing< Real > > &  br = Teuchos::null,
const Teuchos::RCP< ScalarFunction< Real > > &  sf = Teuchos::null 
)
inline

Member Function Documentation

◆ initialize()

template<class Real >
void ROL::ScalarMinimizationLineSearch< Real >::initialize ( const Vector< Real > &  x,
const Vector< Real > &  s,
const Vector< Real > &  g,
Objective< Real > &  obj,
BoundConstraint< Real > &  con 
)
inlinevirtual

◆ run()

template<class Real >
void ROL::ScalarMinimizationLineSearch< 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,
BoundConstraint< Real > &  con 
)
inlinevirtual

Member Data Documentation

◆ xnew_

template<class Real >
Teuchos::RCP<Vector<Real> > ROL::ScalarMinimizationLineSearch< Real >::xnew_
private

◆ g_

template<class Real >
Teuchos::RCP<Vector<Real> > ROL::ScalarMinimizationLineSearch< Real >::g_
private

◆ sm_

template<class Real >
Teuchos::RCP<ScalarMinimization<Real> > ROL::ScalarMinimizationLineSearch< Real >::sm_
private

◆ br_

template<class Real >
Teuchos::RCP<Bracketing<Real> > ROL::ScalarMinimizationLineSearch< Real >::br_
private

◆ sf_

template<class Real >
Teuchos::RCP<ScalarFunction<Real> > ROL::ScalarMinimizationLineSearch< Real >::sf_
private

◆ econd_

template<class Real >
ECurvatureCondition ROL::ScalarMinimizationLineSearch< Real >::econd_
private

◆ c1_

template<class Real >
Real ROL::ScalarMinimizationLineSearch< Real >::c1_
private

◆ c2_

template<class Real >
Real ROL::ScalarMinimizationLineSearch< Real >::c2_
private

◆ c3_

template<class Real >
Real ROL::ScalarMinimizationLineSearch< Real >::c3_
private

◆ max_nfval_

template<class Real >
int ROL::ScalarMinimizationLineSearch< Real >::max_nfval_
private

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