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ChiSquaredProbability.cc File Reference

#include "CommonTools/Statistics/src/IncompleteGammaComplement.h"
#include "CommonTools/Statistics/interface/ChiSquaredProbability.h"

Go to the source code of this file.

Functions
float	ChiSquaredProbability (double chiSquared, double nrDOF)
	Returns the probability that an observation, correctly described by a model with nrDOF, will give rise to a chi-squared larger than the one observed; from this, one can interpret this probability as how likely it is to observe as high (or higher) a chi-squared.
float	LnChiSquaredProbability (double chiSquared, double nrDOF)

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Function Documentation

float ChiSquaredProbability	(	double	chiSquared,
		double	nrDOF
	)

Returns the probability that an observation, correctly described by a model with nrDOF, will give rise to a chi-squared larger than the one observed; from this, one can interpret this probability as how likely it is to observe as high (or higher) a chi-squared.

source: Numerical Recipes

Definition at line 13 of file ChiSquaredProbability.cc.

References IncompleteGammaComplement::value().

Referenced by CSCOfflineMonitor::analyze(), PrimaryVertexAnalyzer::analyze(), ConfigurableTrimmedVertexFinder::clean(), CSCValidation::doSegments(), VertexFitterResult::fill(), MuonTrackAnalyzer::fillPlots(), CSCSegAlgoTC::isSegmentGood(), egammaisolation::EgammaTrackSelector::operator()(), ChiSquared::probability(), CSCSegAlgoST::prune_bad_hits(), CSCSegAlgoHitPruning::pruneBadHits(), CSCSegAlgoTC::segmentSort(), and PrimaryVertexMonitor::vertexPlots().

{ return IncompleteGammaComplement::value( nrDOF / 2 , chiSquared / 2 ); }

float LnChiSquaredProbability	(	double	chiSquared,
		double	nrDOF
	)

Definition at line 16 of file ChiSquaredProbability.cc.

References IncompleteGammaComplement::ln().

Referenced by ChiSquared::lnProbability(), and GlobalTrajectoryBuilderBase::trackProbability().

{ return IncompleteGammaComplement::ln( nrDOF / 2 , chiSquared / 2 ); }

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