Gaudi Framework, version v25r2
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FuncMinimum Class Reference

The simplest concrete implementation of IFuncMinimum interface. More...

#include <FuncMinimum.h>

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Classes

class  FuncMinimumMisc
 

Public Types

typedef std::vector< const
GenFunc * > 		Gradient
 
- Public Types inherited from extends1< GaudiTool, IFuncMinimum >
typedef extends1 base_class
 Typedef to this class.
 
typedef extend_interfaces1
< IFuncMinimum > 		extend_interfaces_base
 Typedef to the base of this class.
 
typedef
extend_interfaces_base::ext_iids 		interfaces
 MPL set of all the implemented interfaces.
 
- Public Types inherited from extend_interfaces1< IFuncMinimum >
typedef
IFuncMinimum::iid::iids::type 		ext_iids
 MPL set of interfaces extended by this one.
 
- Public Types inherited from IFuncMinimum
typedef Genfun::AbsFunction GenFunc
 Function which we minimize (.
 
typedef Genfun::Argument Arg
 Argument of function "GenFunc" (.
 
typedef CLHEP::HepSymMatrix Covariance
 Covariance matrix (matrix of error) (.
 

Public Member Functions

virtual StatusCode minimum (const GenFunc &func, Arg &arg) const
 Find minimum of the function "GenFunc".
 
virtual StatusCode minimum (const GenFunc &func, Arg &arg, Covariance &covar) const
 Find minimum of the function "GenFunc".
 
virtual StatusCode initialize ()
 Overriding initialize.
 
virtual StatusCode finalize ()
 standard finalization method
 
virtual ~FuncMinimum ()
 Destructor.
 
 FuncMinimum (const std::string &type, const std::string &name, const IInterface *parent)
 Standard constructor.
 
- Public Member Functions inherited from extends1< GaudiTool, IFuncMinimum >
 extends1 (A1 a1, A2 a2, A3 a3)
 Templated constructor with 3 arguments.
 
 extends1 (A1 a1, A2 a2)
 Templated constructor with 2 arguments.
 
 extends1 (A1 a1)
 Templated constructor with 1 argument.
 
 extends1 ()
 Default constructor.
 
virtual void * i_cast (const InterfaceID &tid) const
 Implementation of IInterface::i_cast.
 
virtual StatusCode queryInterface (const InterfaceID &ti, void **pp)
 Implementation of IInterface::queryInterface.
 
virtual std::vector< std::string > getInterfaceNames () const
 Implementation of IInterface::getInterfaceNames.
 
virtual ~extends1 ()
 Virtual destructor.
 
- Public Member Functions inherited from GaudiTool
INTupleSvc * ntupleSvc () const
 Access the standard N-Tuple.
 
INTupleSvc * evtColSvc () const
 Access the standard event collection service.
 
IDataProviderSvc * detSvc () const
 accessor to detector service
 
IDataProviderSvc * evtSvc () const
 accessor to event service service
 
IIncidentSvc * incSvc () const
 accessor to Incident Service
 
IChronoStatSvc * chronoSvc () const
 accessor to Chrono & Stat Service
 
IHistogramSvc * histoSvc () const
 acessor to the histogram service
 
IAlgContextSvc * contextSvc () const
 acessor to the Algorithm Context Service
 
DataObject * put (IDataProviderSvc *svc, DataObject *object, const std::string &address, const bool useRootInTES=true) const
 Register a data object or container into Gaudi Event Transient Store.
 
DataObject * put (DataObject *object, const std::string &address, const bool useRootInTES=true) const
 Register a data object or container into Gaudi Event Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		get (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Templated access to the data in Gaudi Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		getIfExists (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Templated access to the data in Gaudi Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		get (const std::string &location, const bool useRootInTES=true) const
 Templated access to the data from Gaudi Event Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		getIfExists (const std::string &location, const bool useRootInTES=true) const
 Templated access to the data in Gaudi Transient Store.
 
template<class TYPE >
TYPE * getDet (IDataProviderSvc *svc, const std::string &location) const
 Templated access to the detector data from the Gaudi Detector Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		getDetIfExists (IDataProviderSvc *svc, const std::string &location) const
 Templated access to the detector data from the Gaudi Detector Transient Store.
 
template<class TYPE >
TYPE * getDet (const std::string &location) const
 Templated access to the detector data from the Gaudi Detector Transient Store.
 
template<class TYPE >
Gaudi::Utils::GetData< TYPE >
::return_type 		getDetIfExists (const std::string &location) const
 Templated access to the detector data from the Gaudi Detector Transient Store.
 
template<class TYPE >
bool exist (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Check the existence of a data object or container in the Gaudi Transient Event Store.
 
template<class TYPE >
bool exist (const std::string &location, const bool useRootInTES=true) const
 Check the existence of a data object or container in the Gaudi Transient Event Store.
 
template<class TYPE >
bool existDet (IDataProviderSvc *svc, const std::string &location) const
 Check the existence of detector objects in the Gaudi Transient Detector Store.
 
template<class TYPE >
bool existDet (const std::string &location) const
 Check the existence of detector objects in the Gaudi Transient Detector Store.
 
template<class TYPE , class TYPE2 >
Gaudi::Utils::GetData< TYPE >
::return_type 		getOrCreate (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Get the existing data object from Gaudi Event Transient store.
 
template<class TYPE , class TYPE2 >
Gaudi::Utils::GetData< TYPE >
::return_type 		getOrCreate (const std::string &location, const bool useRootInTES=true) const
 Get the existing data object from Gaudi Event Transient store.
 
- Public Member Functions inherited from GaudiCommon< AlgTool >
Gaudi::Utils::GetData< TYPE >
::return_type 		get (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Templated access to the data in Gaudi Transient Store.
 
Gaudi::Utils::GetData< TYPE >
::return_type 		getIfExists (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Quicker version of the get function which bypasses the check on the retrieved data.
 
bool exist (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Check the existence of a data object or container in the Gaudi Transient Event Store.
 
Gaudi::Utils::GetData< TYPE >
::return_type 		getOrCreate (IDataProviderSvc *svc, const std::string &location, const bool useRootInTES=true) const
 Get the existing data object from Gaudi Event Transient store.
 
DataObject * put (IDataProviderSvc *svc, DataObject *object, const std::string &location, const bool useRootInTES=true) const
 Register a data object or container into Gaudi Event Transient Store.
 
TOOL * tool (const std::string &type, const std::string &name, const IInterface *parent=0, bool create=true) const
 Useful method for the easy location of tools.
 
TOOL * tool (const std::string &type, const IInterface *parent=0, bool create=true) const
 A useful method for the easy location of tools.
 
SmartIF< SERVICE > svc (const std::string &name, const bool create=true) const
 A useful method for the easy location of services.
 
IUpdateManagerSvc * updMgrSvc () const
 Short-cut to locate the Update Manager Service.
 
StatusCode Error (const std::string &msg, const StatusCode st=StatusCode::FAILURE, const size_t mx=10) const
 Print the error message and return with the given StatusCode.
 
StatusCode Warning (const std::string &msg, const StatusCode st=StatusCode::FAILURE, const size_t mx=10) const
 Print the warning message and return with the given StatusCode.
 
StatusCode Info (const std::string &msg, const StatusCode st=StatusCode::SUCCESS, const size_t mx=10) const
 Print the info message and return with the given StatusCode.
 
StatusCode Print (const std::string &msg, const StatusCode st=StatusCode::SUCCESS, const MSG::Level lev=MSG::INFO) const
 Print the message and return with the given StatusCode.
 
void Assert (const bool ok, const std::string &message="", const StatusCode sc=StatusCode(StatusCode::FAILURE, true)) const
 Assertion - throw exception if the given condition is not fulfilled.
 
void Assert (const bool ok, const char *message, const StatusCode sc=StatusCode(StatusCode::FAILURE, true)) const
 Assertion - throw exception if the given condition is not fulfilled.
 
void Exception (const std::string &msg, const GaudiException &exc, const StatusCode sc=StatusCode(StatusCode::FAILURE, true)) const
 Create and (re)-throw a given GaudiException.
 
void Exception (const std::string &msg, const std::exception &exc, const StatusCode sc=StatusCode(StatusCode::FAILURE, true)) const
 Create and (re)-throw a given exception.
 
void Exception (const std::string &msg="no message", const StatusCode sc=StatusCode(StatusCode::FAILURE, true)) const
 Create and throw an exception with the given message.
 
MsgStream & msgStream (const MSG::Level level) const
 Predefined configurable message stream for the efficient printouts.
 
MsgStream & always () const
 shortcut for the method msgStream ( MSG::ALWAYS )
 
MsgStream & fatal () const
 shortcut for the method msgStream ( MSG::FATAL )
 
MsgStream & err () const
 shortcut for the method msgStream ( MSG::ERROR )
 
MsgStream & error () const
 shortcut for the method msgStream ( MSG::ERROR )
 
MsgStream & warning () const
 shortcut for the method msgStream ( MSG::WARNING )
 
MsgStream & info () const
 shortcut for the method msgStream ( MSG::INFO )
 
MsgStream & debug () const
 shortcut for the method msgStream ( MSG::DEBUG )
 
MsgStream & verbose () const
 shortcut for the method msgStream ( MSG::VERBOSE )
 
MsgStream & msg () const
 shortcut for the method msgStream ( MSG::INFO )
 
const Statistics & counters () const
 accessor to all counters
 
StatEntity & counter (const std::string &tag) const
 accessor to certain counter by name
 
MSG::Level msgLevel () const
 The current message service output level.
 
bool msgLevel (const MSG::Level level) const
 Test the output level.
 
void resetMsgStream () const
 Reset (delete) the current message stream object.
 
bool typePrint () const
 Insert the actual C++ type of the algorithm/tool in the messages ?
 
bool propsPrint () const
 Print properties at initialization ?
 
bool statPrint () const
 Print statistical counters at finalization ?
 
bool errorsPrint () const
 Print error counters at finalization ?
 
long printStat (const MSG::Level level=MSG::ALWAYS) const
 perform the actual printout of statistical counters
 
long printErrors (const MSG::Level level=MSG::ALWAYS) const
 perform the actual printout of error counters
 
long printProps (const MSG::Level level=MSG::ALWAYS) const
 perform the actual printout of properties
 
void registerCondition (const std::string &condition, StatusCode(CallerClass::*mf)()=NULL)
 register the current instance to the UpdateManagerSvc as a consumer for a condition.
 
void registerCondition (const std::string &condition, CondType *&condPtrDest, StatusCode(CallerClass::*mf)()=NULL)
 register the current instance to the UpdateManagerSvc as a consumer for a condition.
 
void registerCondition (char *condition, StatusCode(CallerClass::*mf)()=NULL)
 just to avoid conflicts with the version using a pointer to a template class.
 
void registerCondition (TargetClass *condition, StatusCode(CallerClass::*mf)()=NULL)
 register the current instance to the UpdateManagerSvc as a consumer for a condition.
 
StatusCode runUpdate ()
 asks the UpdateManagerSvc to perform an update of the instance (if needed) without waiting the next BeginEvent incident.
 
 GaudiCommon (const std::string &name, ISvcLocator *pSvcLocator)
 Algorithm constructor.
 
 GaudiCommon (const std::string &type, const std::string &name, const IInterface *parent)
 Tool constructor.
 
StatusCode release (const IInterface *interface) const
 Manual forced (and 'safe') release of the active tool or service.
 
virtual unsigned long release ()
 Un-hide IInterface::release (ICC warning #1125)
 
const AlgTools & tools () const
 get the list of aquired tools
 
const Services & services () const
 get the list of aquired services
 
const std::string & context () const
 Returns the "context" string. Used to identify different processing states.
 
const std::string & rootInTES () const
 Returns the "rootInTES" string.
 
double globalTimeOffset () const
 Returns the "globalTimeOffset" double.
 
const std::string fullTESLocation (const std::string &location, const bool useRootInTES) const
 Returns the full correct event location given the rootInTes settings.
 
- Public Member Functions inherited from AlgTool
virtual const std::string & name () const
 Retrieve full identifying name of the concrete tool object.
 
virtual const std::string & type () const
 Retrieve type (concrete class) of the sub-algtool.
 
virtual const IInterface * parent () const
 Retrieve parent of the sub-algtool.
 
virtual StatusCode configure ()
 
virtual StatusCode start ()
 
virtual StatusCode stop ()
 
virtual StatusCode terminate ()
 
virtual StatusCode reinitialize ()
 
virtual StatusCode restart ()
 
virtual Gaudi::StateMachine::State FSMState () const
 
virtual Gaudi::StateMachine::State targetFSMState () const
 
virtual StatusCode sysInitialize ()
 Initialize AlgTool.
 
virtual StatusCode sysStart ()
 Start AlgTool.
 
virtual StatusCode sysStop ()
 Stop AlgTool.
 
virtual StatusCode sysFinalize ()
 Finalize AlgTool.
 
virtual StatusCode sysReinitialize ()
 Initialize AlgTool.
 
virtual StatusCode sysRestart ()
 Start AlgTool.
 
virtual StatusCode setProperty (const Property &p)
 Default implementations for IProperty interface.
 
virtual StatusCode setProperty (const std::string &s)
 
virtual StatusCode setProperty (const std::string &n, const std::string &v)
 
virtual StatusCode getProperty (Property *p) const
 
virtual const Property & getProperty (const std::string &name) const
 
virtual StatusCode getProperty (const std::string &n, std::string &v) const
 
virtual const std::vector
< Property * > & 		getProperties () const
 
PropertyMgr * getPropertyMgr ()
 
template<class TYPE >
StatusCode setProperty (const std::string &name, const TYPE &value)
 set the property form the value
 
 AlgTool (const std::string &type, const std::string &name, const IInterface *parent)
 Standard Constructor.
 
ISvcLocator * serviceLocator () const
 Retrieve pointer to service locator.
 
ISvcLocator * svcLoc () const
 shortcut for the method service locator
 
IMessageSvc * msgSvc () const
 Retrieve pointer to message service.
 
IToolSvc * toolSvc () const
 The standard ToolSvc service, Return a pointer to the service if present.
 
StatusCode setProperties ()
 Method for setting declared properties to the values specified in the jobOptions via the job option service.
 
template<class T >
StatusCode service (const std::string &name, T *&svc, bool createIf=true) const
 Access a service by name, creating it if it doesn't already exist.
 
template<class T >
StatusCode service (const std::string &type, const std::string &name, T *&svc) const
 Access a service by name, type creating it if it doesn't already exist.
 
SmartIF< IService > service (const std::string &name, const bool createIf=true, const bool quiet=false) const
 Return a pointer to the service identified by name (or "type/name")
 
void declInterface (const InterfaceID &, void *)
 declare interface
 
template<class T >
Property * declareProperty (const std::string &name, T &property, const std::string &doc="none") const
 Declare the named property.
 
Property * declareRemoteProperty (const std::string &name, IProperty *rsvc, const std::string &rname="") const
 Declare remote named properties.
 
IAuditorSvc * auditorSvc () const
 Access the auditor service.
 
IMonitorSvc * monitorSvc () const
 Access the monitor service.
 
template<class T >
void declareInfo (const std::string &name, const T &var, const std::string &desc) const
 Declare monitoring information.
 
void declareInfo (const std::string &name, const std::string &format, const void *var, int size, const std::string &desc) const
 Declare monitoring information (special case)
 
- Public Member Functions inherited from extend_interfaces1< IFuncMinimum >
virtual ~extend_interfaces1 ()
 Virtual destructor.
 
- Public Member Functions inherited from IFuncMinimum
 DeclareInterfaceID (IFuncMinimum, 2, 0)
 InterfaceID.
 
- Public Member Functions inherited from IAlgTool
 DeclareInterfaceID (IAlgTool, 3, 0)
 InterfaceID.
 
virtual ~IAlgTool ()
 Virtual destructor.
 
virtual const std::string & type () const =0
 The type of an AlgTool, meaning the concrete AlgTool class.
 
virtual const IInterface * parent () const =0
 The parent of the concrete AlgTool.
 
virtual StatusCode configure ()=0
 Configuration (from OFFLINE to CONFIGURED).
 
virtual StatusCode start ()=0
 Start (from INITIALIZED to RUNNING).
 
virtual StatusCode stop ()=0
 Stop (from RUNNING to INITIALIZED).
 
virtual StatusCode terminate ()=0
 Initialization (from CONFIGURED to OFFLINE).
 
virtual StatusCode reinitialize ()=0
 Initialization (from INITIALIZED or RUNNING to INITIALIZED, via CONFIGURED).
 
virtual StatusCode restart ()=0
 Initialization (from RUNNING to RUNNING, via INITIALIZED).
 
virtual Gaudi::StateMachine::State FSMState () const =0
 Get the current state.
 
virtual StatusCode sysInitialize ()=0
 Initialization of the Tool.
 
virtual StatusCode sysStart ()=0
 Initialization of the Tool.
 
virtual StatusCode sysStop ()=0
 Initialization of the Tool.
 
virtual StatusCode sysFinalize ()=0
 Finalization of the Tool.
 
virtual StatusCode sysReinitialize ()=0
 Initialization of the Tool.
 
virtual StatusCode sysRestart ()=0
 Initialization of the Tool.
 
virtual unsigned long refCount () const =0
 Current number of reference counts.
 
- Public Member Functions inherited from INamedInterface
 DeclareInterfaceID (INamedInterface, 1, 0)
 InterfaceID.
 
virtual const std::string & name () const =0
 Retrieve the name of the instance.
 
virtual ~INamedInterface ()
 Virtual destructor (always needed for abstract classes).
 
- Public Member Functions inherited from IInterface
virtual unsigned long addRef ()=0
 Increment the reference count of Interface instance.
 
virtual unsigned long release ()=0
 Release Interface instance.
 
virtual ~IInterface ()
 Virtual destructor.
 

Private Member Functions

 FuncMinimum ()
 default constructor is private
 
 FuncMinimum (const FuncMinimum &)
 copy constructor is private
 
FuncMinimum & operator= (const FuncMinimum &)
 assignment operator is
 

Private Attributes

std::string m_algType
 
double m_max_iter
 
double m_norm_gradient
 
double m_step_size
 
double m_tol
 
const
gsl_multimin_fdfminimizer_type * 		m_type
 

Additional Inherited Members

- Static Public Member Functions inherited from GaudiTool
static bool enableSummary (bool)
 enable/disable summary
 
static bool summaryEnabled ()
 is summary enabled?
 
- Static Public Member Functions inherited from IInterface
static const InterfaceID & interfaceID ()
 Return an instance of InterfaceID identifying the interface.
 
- Protected Types inherited from GaudiCommon< AlgTool >
typedef std::map< std::string,
StatEntity > 		Statistics
 the actual type of general counters
 
typedef std::map< std::string,
unsigned int > 		Counter
 the actual type error/warning counter
 
typedef std::vector< IAlgTool * > AlgTools
 storage for active tools
 
typedef GaudiUtils::HashMap
< std::string, SmartIF
< IService > > 		Services
 storage for active services
 
- Protected Member Functions inherited from GaudiTool
 GaudiTool (const std::string &type, const std::string &name, const IInterface *parent)
 Standard constructor.
 
virtual ~GaudiTool ()
 destructor, virtual and protected
 
- Protected Attributes inherited from GaudiCommon< AlgTool >
ICounterSummarySvc * m_counterSummarySvc
 a pointer to the CounterSummarySvc
 
std::vector< std::string > m_counterList
 list of counters to declare. Set by property CounterList. This can be a regular expression.
 
std::vector< std::string > m_statEntityList
 
- Static Protected Attributes inherited from GaudiCommon< AlgTool >
static const bool IgnoreRootInTES
 Simple definition to be used with the new useRootInTES argument get<TYPE> and put methods.
 
static const bool UseRootInTES
 Simple definition to be used with the new useRootInTES argument get<TYPE> and put methods.
 

Detailed Description

The simplest concrete implementation of IFuncMinimum interface.

See Also
GaudiGSL/IFuncMinimum.h
Author
Kirill Miklyaev kiril.nosp@m.lm@i.nosp@m.ris1..nosp@m.itep.nosp@m..ru
Date
2002-09-14

Definition at line 26 of file FuncMinimum.h.

Member Typedef Documentation

typedef std::vector<const GenFunc*> FuncMinimum::Gradient

Definition at line 28 of file FuncMinimum.h.

Constructor & Destructor Documentation

FuncMinimum::~FuncMinimum ( )
virtual

Destructor.

Definition at line 356 of file FuncMinimum.cpp.

{}
FuncMinimum::FuncMinimum ( const std::string &  type,
const std::string &  name,
const IInterface *  parent 
)

Standard constructor.

See Also
GaudiTool
Parameters
typetool type
nametool name
parentparent of the tool

declare type of the algorithm for multidimensional minimization

declare maximum of iteration

declare the absolute tolerance for the Euclidean norm of the gradient

declare the size of the first trial step

declare the accuracy of the line minimization

Definition at line 64 of file FuncMinimum.cpp.

: base_class ( type, name , parent )
, m_algType ( "conjugate_fr" )
, m_max_iter ( 200 )
, m_norm_gradient ( 1.0e-10 )
, m_step_size ( 0.01 )
, m_tol ( 1e-10 )
, m_type ( 0 )
{
declareProperty ( "Algorithm", m_algType );
declareProperty ( "Iteration", m_max_iter );
declareProperty ( "Gradient" , m_norm_gradient );
declareProperty ( "Step_size", m_step_size );
declareProperty ( "Tol" , m_tol );
}
FuncMinimum::FuncMinimum ( )
private

default constructor is private

FuncMinimum::FuncMinimum ( const FuncMinimum &  )
private

copy constructor is private

Member Function Documentation

StatusCode FuncMinimum::finalize ( )
virtual

standard finalization method

See Also
AlgTool
IAlgTool
Returns
status code

Reimplemented from GaudiTool.

Definition at line 343 of file FuncMinimum.cpp.

{
StatusCode sc = GaudiTool::finalize() ;
MsgStream log( msgSvc() , name() ) ;
if ( sc.isFailure() )
{
return Error("Could not finalize base class GaudiTool", sc);
}
return StatusCode::SUCCESS;
}
StatusCode FuncMinimum::initialize ( )
virtual

Overriding initialize.

The algorithm for multidimensional minimization

Reimplemented from GaudiTool.

Definition at line 290 of file FuncMinimum.cpp.

{
StatusCode sc = GaudiTool::initialize() ;
MsgStream log( msgSvc() , name() ) ;
if ( sc.isFailure() )
{
return Error ("Could not initialize base class GaudiTool", sc);
}
if( "conjugate_fr" == m_algType )
{
m_type = gsl_multimin_fdfminimizer_conjugate_fr ;
log << MSG::DEBUG
<< "Minimization algorithm to be used: "
<< "'gsl_multimin_fdfminimizer_conjugate_fr'"
<< endmsg;
}
else if ( "conjugate_pr" == m_algType )
{
m_type = gsl_multimin_fdfminimizer_conjugate_pr ;
log << MSG::DEBUG
<< "Minimization algorithm to be used: "
<< "'gsl_multimin_fdfminimizer_conjugate_pr'"
<< endmsg;
}
else if ( "vector_bfgs" == m_algType )
{
m_type = gsl_multimin_fdfminimizer_vector_bfgs ;
log << MSG::DEBUG
<< "Minimization algorithm to be used: " <<
"'gsl_multimin_fdfminimizer_vector_bfgs'" << endmsg;
}
else if ( "steepest_descent" == m_algType )
{
m_type = gsl_multimin_fdfminimizer_steepest_descent ;
log << MSG::DEBUG
<< "Minimization algorithm to be used: "
<< "'gsl_multimin_fdfminimizer_steepest_descent'"
<< endmsg;
}
else
{
return Error(" Unknown algorithm type '"
+ std::string(m_algType) + "'");
}
return StatusCode::SUCCESS;
}
StatusCode FuncMinimum::minimum ( const GenFunc &  func,
IFuncMinimum::Arg &  arg 
) const
virtual

Find minimum of the function "GenFunc".

See Also
IFuncMinimum.h
Returns
StatusCode

Implements IFuncMinimum.

Definition at line 151 of file FuncMinimum.cpp.

{
using namespace Genfun;
gsl_vector_view vect = gsl_vector_view_array ( &arg[0] ,
arg.dimension() );
MsgStream log( msgSvc(), name() );
FuncMinimumMisc local (func, arg);
gsl_multimin_function_fdf function;
function.f = &fun_gsl;
function.df = &dfun_gsl;
function.fdf = &fdfun_gsl;
function.n = vect.vector.size;
function.params = (void*) &local;
size_t iter = 0 ;
int status = 0 ;
const gsl_multimin_fdfminimizer_type *T = m_type ;
gsl_multimin_fdfminimizer *s;
s = gsl_multimin_fdfminimizer_alloc ( T, vect.vector.size);
gsl_multimin_fdfminimizer_set ( s, &function,
&vect.vector, m_step_size, m_tol);
for( iter = 0 ; iter < m_max_iter ; ++iter )
{
status = gsl_multimin_fdfminimizer_iterate (s);
if ( status )
{
return Error
("Error from gsl_multimin_fdfminimizer_iterate '"
+ std::string(gsl_strerror(status)) + "'") ;
}
status = gsl_multimin_test_gradient (s->gradient,
m_norm_gradient);
if ( status != GSL_CONTINUE ) { break; }
}
for (unsigned int i = 0; i < vect.vector.size; ++i)
{
gsl_vector_set (&vect.vector, i, gsl_vector_get (s->x, i));
}
if (status == GSL_SUCCESS)
{
log << MSG::DEBUG
<< "We stopped in the method on the " << iter
<< " iteration (we have maximum " << m_max_iter
<< " iterations)" << endmsg;
log << "The Euclidean norm of gradient = "
<< gsl_blas_dnrm2 (s->gradient)
<< " by the absolute tolerance = "
<< m_norm_gradient << endmsg;
}
else if (status == GSL_CONTINUE && iter <= m_max_iter )
{
return Error ( "Method finished with '"
+ std::string(gsl_strerror(status))
+ "' error" );
}
else
{
return Error ( "Method finished with '" +
std::string(gsl_strerror(status))
+ "' error" );
}
gsl_multimin_fdfminimizer_free (s);
if (status)
{
return Error ( "Method finished with '"
+ std::string(gsl_strerror(status))
+ "' error" );
}
return StatusCode::SUCCESS;
}
StatusCode FuncMinimum::minimum ( const GenFunc &  func,
IFuncMinimum::Arg &  arg,
IFuncMinimum::Covariance &  covar 
) const
virtual

Find minimum of the function "GenFunc".

See Also
IFuncMinimum.h
Returns
StatusCode

Find minimum of our function

Implements IFuncMinimum.

Definition at line 247 of file FuncMinimum.cpp.

{
MsgStream log( msgSvc(), name() );
StatusCode sc = minimum (func, arg) ;
if (sc.isFailure())
{
std::ostringstream buffer;
buffer << "MINIMUM IS NOT FOUND. StatusCode = '" << sc.getCode() << '\'';
return Error (buffer.str(), sc);
}
else
{
HepSymMatrix cov(arg.dimension(), 0);
for (unsigned int i = 0; i < arg.dimension(); ++i)
{
Genfun::GENFUNCTION f = func.partial(i);
for (unsigned int j = i; j < arg.dimension(); ++j)
{
Genfun::GENFUNCTION fij = f.partial(j);
cov(i+1, j+1) = 0.5 * fij(arg);
}
}
int inv;
covar = cov.inverse(inv);
if ( inv != 0)
{
return Error
("Matrix of Error is not complete successful");
}
return StatusCode::SUCCESS;
}
}
FuncMinimum& FuncMinimum::operator= ( const FuncMinimum &  )
private

assignment operator is

Member Data Documentation

std::string FuncMinimum::m_algType
private

Definition at line 103 of file FuncMinimum.h.

double FuncMinimum::m_max_iter
private

Definition at line 104 of file FuncMinimum.h.

double FuncMinimum::m_norm_gradient
private

Definition at line 105 of file FuncMinimum.h.

double FuncMinimum::m_step_size
private

Definition at line 106 of file FuncMinimum.h.

double FuncMinimum::m_tol
private

Definition at line 107 of file FuncMinimum.h.

const gsl_multimin_fdfminimizer_type* FuncMinimum::m_type
private

Definition at line 108 of file FuncMinimum.h.

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