Implements a soft constraint with chi^2=((efact*sum(E_i) + pxfact*sum(p_x,i)+pyfact*sum(p_y,i)+pzfact*sum(p_z,i)-value)/sigma)^2. More...

#include <SoftGaussMomentumConstraint.h>

Inheritance diagram for SoftGaussMomentumConstraint:

Public Member Functions
	SoftGaussMomentumConstraint (double sigma_, double efact_, double pxfact_, double pyfact_, double pzfact_, double value_=0)
	Constructor. More...

virtual	~SoftGaussMomentumConstraint ()
	Virtual destructor.

virtual double	getValue () const
	Returns the value of the constraint function.

virtual void	getDerivatives (int idim, double der[]) const
	Get first order derivatives. More...

Public Member Functions inherited from SoftGaussParticleConstraint
	SoftGaussParticleConstraint (double sigma_)
	Creates an empty SoftGaussParticleConstraint object. More...

virtual	~SoftGaussParticleConstraint ()
	Virtual destructor.

virtual void	setFOList (std::vector< ParticleFitObject * > *fitobjects_)
	Adds several ParticleFitObject objects to the list. More...

virtual void	addToFOList (ParticleFitObject &fitobject, int flag=1)
	Adds one ParticleFitObject objects to the list.

virtual void	resetFOList ()
	Resests ParticleFitObject list.

virtual double	getChi2 () const
	Returns the chi2.

virtual double	getError () const
	Returns the error on the value of the constraint.

virtual double	getSigma () const
	Returns the sigma.

virtual double	setSigma (double sigma_)
	Sets the sigma. More...

virtual void	add2ndDerivativesToMatrix (double *M, int idim) const
	Adds second order derivatives to global covariance matrix M. More...

virtual void	addToGlobalChi2DerVector (double *y, int idim) const
	Add derivatives of chi squared to global derivative matrix. More...

virtual void	invalidateCache () const
	Invalidates any cached values for the next event.

void	test1stDerivatives ()

void	test2ndDerivatives ()

double	num1stDerivative (int ifo, int ilocal, double eps)
	Evaluates numerically the 1st derivative w.r.t. a parameter. More...

double	num2ndDerivative (int ifo1, int ilocal1, double eps1, int ifo2, int ilocal2, double eps2)
	Evaluates numerically the 2nd derivative w.r.t. 2 parameters. More...

int	getVarBasis () const

Public Member Functions inherited from BaseSoftConstraint
virtual	~BaseSoftConstraint ()
	Virtual destructor.

Public Member Functions inherited from BaseConstraint
	BaseConstraint ()
	Creates an empty BaseConstraint object.

	BaseConstraint (const BaseConstraint &rhs)
	Copy constructor. More...

BaseConstraint &	operator= (const BaseConstraint &rhs)
	Assignment. More...

virtual	~BaseConstraint ()
	Virtual destructor.

virtual const char *	getName () const
	Returns the name of the constraint.

virtual void	setName (const char *name_)
	Set object's name.

virtual std::ostream &	print (std::ostream &os) const
	print object to ostream More...

Protected Member Functions
virtual bool	secondDerivatives (int i, int j, double *derivatives) const
	Second derivatives with respect to the 4-vectors of Fit objects i and j; result false if all derivatives are zero. More...

virtual bool	firstDerivatives (int i, double *derivatives) const
	First derivatives with respect to the 4-vector of Fit objects i; result false if all derivatives are zero. More...

Protected Attributes
double	efact

double	pxfact

double	pyfact

double	pzfact

double	value

Protected Attributes inherited from SoftGaussParticleConstraint
FitObjectContainer	fitobjects
	The FitObjectContainer.

std::vector< double >	derivatives
	The derivatives.

std::vector< int >	flags
	The flags can be used to divide the FitObjectContainer into several subsets used for example to implement an equal mass constraint (see MassConstraint). More...

double	sigma
	The sigma of the Gaussian.

Protected Attributes inherited from BaseSoftConstraint
char *	name

Protected Attributes inherited from BaseConstraint
char *	name

Additional Inherited Members
Protected Types inherited from SoftGaussParticleConstraint
enum	{ VAR_BASIS =BaseDefs::VARBASIS_EPXYZ }

typedef std::vector < ParticleFitObject * >	FitObjectContainer
	Vector of pointers to ParticleFitObjects.

typedef FitObjectContainer::iterator	FitObjectIterator
	Iterator through vector of pointers to ParticleFitObjects.

typedef FitObjectContainer::const_iterator	ConstFitObjectIterator
	Constant iterator through vector of pointers to ParticleFitObjects.

Related Functions inherited from BaseConstraint
std::ostream &	operator<< (std::ostream &os, const BaseConstraint &bc)
	Prints out a BaseConstraint, using its print method. More...

Detailed Description

Implements a soft constraint with chi^2=((efact*sum(E_i) + pxfact*sum(p_x,i)+pyfact*sum(p_y,i)+pzfact*sum(p_z,i)-value)/sigma)^2.

This class implements soft constraints on the sum of energies, px, py, and pz. It can be used to for constraints of the form

chi^2 = (sum(E)-sqrt(s))^2/sigma^2
chi^2 = (sum(px))^2/sigma^2
chi^2 = (sum(py))^2/sigma^2
chi^2 = (sum(pz))^2/sigma^2
chi^2 = (sum(E)-sum(pz)-2 Ee)^2/sigma^2

Author: Jenny List, Benno List Last update:

Date:: 2008/02/18 09:59:34

by:

Author:: blist

Constructor & Destructor Documentation

SoftGaussMomentumConstraint::SoftGaussMomentumConstraint	(	double	sigma_,
		double	efact_,
		double	pxfact_,
		double	pyfact_,
		double	pzfact_,
		double	value_ = `0`
	)

Constructor.

Parameters

sigma_	The sigma value
efact_	Factor for energy sum
pxfact_	Factor for px sum
pyfact_	Factor for py sum
pzfact_	Factor for pz sum
value_	Target value of sum

Member Function Documentation

bool SoftGaussMomentumConstraint::firstDerivatives	(	int	i,
		double *	derivatives
	)		const

protectedvirtual

First derivatives with respect to the 4-vector of Fit objects i; result false if all derivatives are zero.

Parameters

i	number of 1st FitObject
derivatives	The result 4-vector

Implements SoftGaussParticleConstraint.

void SoftGaussMomentumConstraint::getDerivatives	(	int	idim,
		double	der[]
	)		const

virtual

Get first order derivatives.

Call this with a predefined array "der" with the necessary number of entries!

Parameters

idim	First dimension of the array
der	Array of derivatives, at least idim x idim

Implements SoftGaussParticleConstraint.

References SoftGaussParticleConstraint::fitobjects.

bool SoftGaussMomentumConstraint::secondDerivatives	(	int	i,
		int	j,
		double *	derivatives
	)		const

protectedvirtual

Second derivatives with respect to the 4-vectors of Fit objects i and j; result false if all derivatives are zero.

Parameters

i	number of 1st FitObject
j	number of 2nd FitObject
derivatives	The result 4x4 matrix

Implements SoftGaussParticleConstraint.

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

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation