APWeightSum Class Reference

#include <APWeightSum.h>

Inheritance diagram for APWeightSum:

List of all members.

Public Member Functions
	APWeightSum ()
virtual	~APWeightSum ()
void	AddWeightToEvt (APWeightEntry *weight)
void	FinishEvt (double ext_weight=1.0)
void	AddEvt (APEvtWeight *evt_weight, double ext_weight=1.0)
double	GetSumW () const
double	GetSumW2 () const
double	GetSumWExternal () const
double	GetStdDev ()
double	GetVariance ()
double	GetVarianceNoCorr ()
double	GetVarianceFullCorr ()
double	GetSysUncert () const
unsigned long	GetKUnweighted () const
THnSparse *	GetUncertHistogram (APReweightBase *weighter)
std::vector< THnSparse * >	GetAllUncertHistograms ()
Protected Member Functions
void	Compute ()
Protected Attributes
std::vector< APWeightEntry * >	_current_evt_weights
std::vector< THnSparse * >	_linear_uncert
unsigned long int	_k_evt_orig
double	_k_evt_weight
double	_k_evt_weight2
double	_k_evt_weight_external
double	_variance
double	_variance_nocorr
double	_variance_fullcorr
double	_variance_sys
bool	_isComputed

---

Detailed Description

Class to calculate the sum of weights ("weighted counter")

Calculates the sum of weights taking into account the underlying asymmetric probability distribution. This is done by modelling the pdf and then extracting the corresponding quantiles.

Author:

fabian.Kohn@cern.ch

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Constructor & Destructor Documentation

APWeightSum::APWeightSum

(

)

Default constructor.

APWeightSum::~APWeightSum

(

)

[virtual]

Default destructor.

---

Member Function Documentation

void APWeightSum::AddEvt	(	APEvtWeight *	evt_weight,
		double	ext_weight = 1.0
	)

Adds an event with an externally calculated EvtWeight object. Takes an optional external weight factor (e.g. mc weight).

void APWeightSum::AddWeightToEvt

(

APWeightEntry *

weight

)

Adds a weight to the sum of weights.

Reimplemented in APWeightSumEnsemble.

void APWeightSum::Compute

(

)

[protected]

Calculates the final uncertainties including correlations.

void APWeightSum::FinishEvt

(

double

ext_weight = 1.0

)

Finishes the current event and calculates the event weight. Takes an optional external weight factor (e.g. mc weight).

Reimplemented in APWeightSumEnsemble.

vector< THnSparse * > APWeightSum::GetAllUncertHistograms

(

)

Returns vector of THnSparses holding the uncertainties for all APReweight IDs.

unsigned long APWeightSum::GetKUnweighted

(

)

const

Returns the unweighted sum of entries.

double APWeightSum::GetStdDev

(

)

Returns the standard deviation.

double APWeightSum::GetSumW

(

)

const

Returns the sum of weights.

double APWeightSum::GetSumW2

(

)

const

Returns sum of (weights^2).

double APWeightSum::GetSumWExternal

(

)

const

Returns the sum of weights without taking into account the trigger weighting (external weights only) to allow switching trigger weighting on/off.

double APWeightSum::GetSysUncert

(

)

const

Returns the systematic uncertainty (from systematics assigned to weights).

THnSparse * APWeightSum::GetUncertHistogram

(

APReweightBase *

weighter

)

Returns THnSparse holding the uncertainties for given APReweightBase instance.

double APWeightSum::GetVariance

(

)

Returns the variance.

double APWeightSum::GetVarianceFullCorr

(

)

Returns the variance, assuming full correlation amongst objects.

double APWeightSum::GetVarianceNoCorr

(

)

Returns the variance, assuming no correlations.

---

Member Data Documentation

std::vector< APWeightEntry* > APWeightSum::_current_evt_weights [protected]

Holds the expectancy values of the weights in the current event.

unsigned long int APWeightSum::_k_evt_orig [protected]

Holds the original amount of unweighted counts ("sum of 1's").

double APWeightSum::_k_evt_weight [protected]

Holds the sum of weights.

double APWeightSum::_k_evt_weight2 [protected]

Holds the sum of squared weights.

double APWeightSum::_k_evt_weight_external [protected]

Holds the sum of external weights (no trigger weighting).

std::vector< THnSparse* > APWeightSum::_linear_uncert [protected]

Holds all histograms for uncertainties.

double APWeightSum::_variance [protected]

Holds the variance.

double APWeightSum::_variance_fullcorr [protected]

Holds the variance, assuming full correlation amongst objects.

double APWeightSum::_variance_nocorr [protected]

Holds the variance, assuming no correlations.

double APWeightSum::_variance_sys [protected]

Holds the systematic variance (from systematics assigned to weights).

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

• /cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/ReweightUtils/ReweightUtils/APWeightSum.h
• /cvmfs/atlas.cern.ch/repo/sw/ASG/AnalysisBase/2.4.31/ReweightUtils/Root/APWeightSum.cxx