#include <SimplerLikelihoodRatioTestStat.h>

Inheritance diagram for SimplerLikelihoodRatioTestStat:

Public Member Functions
virtual Double_t	Evaluate (RooAbsData &data, RooArgSet &nullPOI)

virtual const TString	GetVarName () const

	SimplerLikelihoodRatioTestStat (RooAbsPdf &pdfNull, RooAbsPdf &pdfAlt, const RooArgSet &paramsNull=RooArgSet(), const RooArgSet &paramsAlt=RooArgSet())

Private Attributes
std::auto_ptr< RooArgSet >	paramsAlt_

std::auto_ptr< RooArgSet >	paramsNull_

RooAbsPdf *	pdfAlt_

RooAbsPdf *	pdfNull_

RooArgSet	snapAlt_

RooArgSet	snapNull_

Detailed Description

Definition at line 11 of file SimplerLikelihoodRatioTestStat.h.

Constructor & Destructor Documentation

SimplerLikelihoodRatioTestStat::SimplerLikelihoodRatioTestStat	(	RooAbsPdf &	pdfNull,
		RooAbsPdf &	pdfAlt,
		const RooArgSet &	paramsNull = `RooArgSet()`,
		const RooArgSet &	paramsAlt = `RooArgSet()`
	)

inline

Definition at line 13 of file SimplerLikelihoodRatioTestStat.h.

References snapAlt_, and snapNull_.

                                                                                                                                                                      : 
             pdfNull_(&pdfNull), pdfAlt_(&pdfAlt),
             paramsNull_(pdfNull_->getVariables()), 
             paramsAlt_(pdfAlt_->getVariables()) 
         {
             snapNull_.addClone(paramsNull);
             snapAlt_.addClone(paramsAlt);
         }

Member Function Documentation

virtual Double_t SimplerLikelihoodRatioTestStat::Evaluate	(	RooAbsData &	data,
		RooArgSet &	nullPOI
	)

inlinevirtual

Definition at line 22 of file SimplerLikelihoodRatioTestStat.h.

References create_public_lumi_plots::log, paramsAlt_, paramsNull_, pdfAlt_, pdfNull_, snapAlt_, and snapNull_.

         {
             if (data.numEntries() != 1) throw std::invalid_argument("HybridNew::TestSimpleStatistics: dataset doesn't have exactly 1 entry.");
             const RooArgSet *entry = data.get(0);
             *paramsNull_ = *entry;
             *paramsNull_ = snapNull_;
             *paramsNull_ = nullPOI;
             double nullNLL = pdfNull_->getVal();
 
             *paramsAlt_ = *entry;
             *paramsAlt_ = snapAlt_;
             double altNLL = pdfAlt_->getVal();
 
             return -log(nullNLL/altNLL);
         }

virtual const TString SimplerLikelihoodRatioTestStat::GetVarName ( ) const

inlinevirtual

Definition at line 38 of file SimplerLikelihoodRatioTestStat.h.

References pdfAlt_, and pdfNull_.

                                                  {
             return TString::Format("-log(%s/%s)", pdfNull_->GetName(), pdfAlt_->GetName()); 
         }