|
ROOT
Reference Guide |
|
Go to the documentation of this file.
14 #ifndef ROOT_Math_BasicMinimizer
15 #define ROOT_Math_BasicMinimizer
37 class MinimTransformFunction;
81 if (
this == &rhs)
return *
this;
94 virtual bool SetVariable(
unsigned int ivar,
const std::string &
name,
double val,
double step);
102 virtual bool SetLimitedVariable(
unsigned int ivar ,
const std::string &
name ,
double val ,
double step ,
double ,
double );
104 virtual bool SetFixedVariable(
unsigned int ,
const std::string & ,
double );
127 virtual std::string
VariableName(
unsigned int ivar)
const;
139 virtual const double *
X()
const {
return &
fValues.front(); }
145 virtual unsigned int NFree()
const;
189 std::map< unsigned int, std::pair<double, double> >
fBounds;
std::vector< double > fValues
void SetMinValue(double val)
virtual std::string VariableName(unsigned int ivar) const
get name of variables (override if minimizer support storing of variable names)
std::map< unsigned int, std::pair< double, double > > fBounds
bool CheckObjFunction() const
virtual bool IsFixedVariable(unsigned int ivar) const
query if an existing variable is fixed (i.e.
virtual unsigned int NPar() const
total number of parameter defined
virtual void SetFunction(const ROOT::Math::IMultiGenFunction &func)
set the function to minimize
virtual bool FixVariable(unsigned int ivar)
fix an existing variable
std::vector< double > fSteps
virtual unsigned int NFree() const
number of free variables (real dimension of the problem)
const ROOT::Math::IMultiGradFunction * GradObjFunction() const
return pointer to used gradient object function (NULL if gradient is not supported)
std::vector< std::string > fNames
virtual bool ReleaseVariable(unsigned int ivar)
release an existing variable
Interface (abstract class) for multi-dimensional functions providing a gradient calculation.
Base Minimizer class, which defines the basic funcionality of various minimizer implementations (apar...
virtual double MinValue() const
return minimum function value
virtual bool SetUpperLimitedVariable(unsigned int ivar, const std::string &name, double val, double step, double upper)
set upper limit variable (override if minimizer supports them )
virtual bool SetVariableStepSize(unsigned int ivar, double step)
set the step size of an already existing variable
bool CheckDimension() const
virtual bool SetVariable(unsigned int ivar, const std::string &name, double val, double step)
set free variable
BasicMinimizer()
Default constructor.
virtual bool GetVariableSettings(unsigned int ivar, ROOT::Fit::ParameterSettings &varObj) const
get variable settings in a variable object (like ROOT::Fit::ParamsSettings)
void SetFinalValues(const double *x)
virtual bool SetVariableUpperLimit(unsigned int ivar, double upper)
set the upper-limit of an already existing variable
BasicMinimizer & operator=(const BasicMinimizer &rhs)
Assignment operator.
virtual const double * StepSizes() const
accessor methods
const ROOT::Math::IMultiGenFunction * fObjFunc
virtual const double * X() const
return pointer to X values at the minimum
virtual bool SetVariableValues(const double *x)
set the values of all existing variables (array must be dimensioned to the size of existing parameter...
Class, describing value, limits and step size of the parameters Provides functionality also to set/re...
virtual bool SetVariableLowerLimit(unsigned int ivar, double lower)
set the lower-limit of an already existing variable
virtual bool SetVariableLimits(unsigned int ivar, double lower, double upper)
set the limits of an already existing variable
std::vector< ROOT::Math::EMinimVariableType > fVarTypes
virtual bool SetFixedVariable(unsigned int, const std::string &, double)
set fixed variable (override if minimizer supports them )
Abstract Minimizer class, defining the interface for the various minimizer (like Minuit2,...
virtual unsigned int NDim() const
number of dimensions
virtual bool SetLimitedVariable(unsigned int ivar, const std::string &name, double val, double step, double, double)
set upper/lower limited variable (override if minimizer supports them )
MinimTransformFunction * CreateTransformation(std::vector< double > &startValues, const ROOT::Math::IMultiGradFunction *func=0)
virtual bool SetVariableValue(unsigned int ivar, double val)
set the value of an existing variable
Documentation for the abstract class IBaseFunctionMultiDim.
BasicMinimizer(const BasicMinimizer &)
Copy constructor.
void PrintResult() const
print result of minimization
tbb::task_arena is an alias of tbb::interface7::task_arena, which doesn't allow to forward declare tb...
virtual bool Minimize()
method to perform the minimization
const ROOT::Math::MinimTransformFunction * TransformFunction() const
return transformation function (NULL if not having a transformation)
Namespace for new Math classes and functions.
virtual bool SetLowerLimitedVariable(unsigned int ivar, const std::string &name, double val, double step, double lower)
set lower limit variable (override if minimizer supports them )
const ROOT::Math::IMultiGenFunction * ObjFunction() const
return pointer to used objective function
virtual ~BasicMinimizer()
Destructor.
virtual int VariableIndex(const std::string &name) const
get index of variable given a variable given a name return -1 if variable is not found