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ROOT 6.08/07 Reference Guide |
template wrapped class for adapting to FumiliFCNBase signature
Definition at line 47 of file FumiliFCNAdapter.h.
Public Types | |
typedef Function::Type_t | Type_t |
Public Member Functions | |
FumiliFCNAdapter (const Function &f, unsigned int ndim, double up=1.) | |
~FumiliFCNAdapter () | |
void | EvaluateAll (const std::vector< double > &v) |
evaluate gradient hessian and function value needed by fumili More... | |
double | operator() (const std::vector< double > &v) const |
The meaning of the vector of parameters is of course defined by the user, who uses the values of those parameters to calculate their function Value. More... | |
double | operator() (const double *v) const |
void | SetErrorDef (double up) |
add interface to set dynamically a new error definition Re-implement this function if needed. More... | |
double | Up () const |
Error definition of the function. More... | |
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FumiliFCNBase () | |
Default Constructor. More... | |
FumiliFCNBase (unsigned int npar) | |
Constructor which initializes the class with the function provided by the user for modeling the data. More... | |
virtual | ~FumiliFCNBase () |
virtual unsigned int | Dimension () |
return number of function variable (parameters) , i.e. More... | |
virtual const std::vector< double > & | Gradient () const |
Return cached Value of function Gradient estimated previously using the FumiliFCNBase::EvaluateAll method. More... | |
virtual double | Hessian (unsigned int row, unsigned int col) const |
Return Value of the i-th j-th element of the Hessian matrix estimated previously using the FumiliFCNBase::EvaluateAll method. More... | |
virtual double | Value () const |
Return cached Value of objective function estimated previously using the FumiliFCNBase::EvaluateAll method. More... | |
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virtual | ~FCNBase () |
virtual double | ErrorDef () const |
Error definition of the function. More... | |
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virtual | ~GenericFunction () |
Private Attributes | |
const Function & | fFunc |
double | fUp |
Additional Inherited Members | |
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std::vector< double > & | Gradient () |
std::vector< double > & | Hessian () |
virtual void | InitAndReset (unsigned int npar) |
initialize and reset values of gradien and Hessian More... | |
void | SetFCNValue (double value) |
#include <Minuit2/FumiliFCNAdapter.h>
typedef Function::Type_t ROOT::Minuit2::FumiliFCNAdapter< Function >::Type_t |
Definition at line 52 of file FumiliFCNAdapter.h.
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inline |
Definition at line 54 of file FumiliFCNAdapter.h.
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inline |
Definition at line 60 of file FumiliFCNAdapter.h.
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virtual |
evaluate gradient hessian and function value needed by fumili
Implements ROOT::Minuit2::FumiliFCNBase.
Definition at line 95 of file FumiliFCNAdapter.h.
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inlinevirtual |
The meaning of the vector of parameters is of course defined by the user, who uses the values of those parameters to calculate their function Value.
The order and the position of these parameters is strictly the one specified by the user when supplying the starting values for minimization. The starting values must be specified by the user, either via an std::vector<double> or the MnUserParameters supplied as input to the MINUIT minimizers such as VariableMetricMinimizer or MnMigrad. Later values are determined by MINUIT as it searches for the Minimum or performs whatever analysis is requested by the user.
par | function parameters as defined by the user. |
Implements ROOT::Minuit2::FCNBase.
Definition at line 63 of file FumiliFCNAdapter.h.
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inline |
Definition at line 66 of file FumiliFCNAdapter.h.
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inlinevirtual |
add interface to set dynamically a new error definition Re-implement this function if needed.
Reimplemented from ROOT::Minuit2::FCNBase.
Definition at line 71 of file FumiliFCNAdapter.h.
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inlinevirtual |
Error definition of the function.
MINUIT defines Parameter errors as the change in Parameter Value required to change the function Value by up. Normally, for chisquared fits it is 1, and for negative log likelihood, its Value is 0.5. If the user wants instead the 2-sigma errors for chisquared fits, it becomes 4, as Chi2(x+n*sigma) = Chi2(x) + n*n.
Implements ROOT::Minuit2::FCNBase.
Definition at line 69 of file FumiliFCNAdapter.h.
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private |
Definition at line 89 of file FumiliFCNAdapter.h.
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private |
Definition at line 90 of file FumiliFCNAdapter.h.