Comp2RefKolmogorov Class Reference

Comparison to reference using the Kolmogorov algorithm. More...

#include <QTest.h>

Inheritance diagram for Comp2RefKolmogorov:

Public Member Functions
	Comp2RefKolmogorov (const std::string &name)
float	runTest (const MonitorElement *me)
Public Member Functions inherited from SimpleTest
virtual std::vector< DQMChannel >	getBadChannels (void) const
	get vector of channels that failed test (not always relevant!) More...
void	setMinimumEntries (unsigned n)
	set minimum # of entries needed More...
	SimpleTest (const std::string &name, bool keepBadChannels=false)
Public Member Functions inherited from QCriterion
std::string	algoName (void) const
	get algorithm name More...
std::string	getMessage (void) const
	get message attached to test More...
std::string	getName (void) const
	get name of quality test More...
int	getStatus (void) const
	(class should be created by DQMStore class) More...
void	setErrorProb (float prob)
void	setWarningProb (float prob)
	set probability limit for warning and error (default: 90% and 50%) More...

Static Public Member Functions
static std::string	getAlgoName (void)

Additional Inherited Members
Protected Member Functions inherited from SimpleTest
virtual void	setMessage (void)
	set status & message after test has run More...
Protected Member Functions inherited from QCriterion
void	init (void)
	initialize values More...
	QCriterion (std::string qtname)
float	runTest (const MonitorElement *me, QReport &qr, DQMNet::QValue &qv)
void	setAlgoName (std::string name)
	set algorithm name More...
void	setVerbose (int verbose)
	probability limits for warnings, errors More...
virtual	~QCriterion (void)
Protected Attributes inherited from SimpleTest
std::vector< DQMChannel >	badChannels_
bool	keepBadChannels_
unsigned	minEntries_
Protected Attributes inherited from QCriterion
std::string	algoName_
	name of quality test More...
float	errorProb_
std::string	message_
	quality test status More...
float	prob_
	name of algorithm More...
std::string	qtname_
int	status_
int	verbose_
float	warningProb_
	message attached to test More...

Detailed Description

Comparison to reference using the Kolmogorov algorithm.

Definition at line 211 of file QTest.h.

Constructor & Destructor Documentation

Comp2RefKolmogorov::Comp2RefKolmogorov ( const std::string &  name )

inline

Definition at line 214 of file QTest.h.

References getAlgoName(), and QCriterion::setAlgoName().

                                            : SimpleTest(name)
  { 
    setAlgoName(getAlgoName()); 
  }

Member Function Documentation

static std::string Comp2RefKolmogorov::getAlgoName ( void  )

inlinestatic

Definition at line 218 of file QTest.h.

Referenced by Comp2RefKolmogorov(), QTestConfigure::EnableComp2RefKolmogorovTest(), QTestConfigure::enableTests(), and QTestParameterNames::QTestParameterNames().

{ return "Comp2RefKolmogorov"; }

float Comp2RefKolmogorov::runTest ( const MonitorElement *  me )

virtual

Reimplemented from QCriterion.

Definition at line 293 of file QTest.cc.

References Abs(), newFWLiteAna::bin, gather_cfg::cout, MonitorElement::DQM_KIND_TH1D, MonitorElement::DQM_KIND_TH1F, MonitorElement::DQM_KIND_TH1S, MonitorElement::DQM_KIND_TPROFILE, alignCSCRings::e, plotBeamSpotDB::first, MonitorElement::getRefRootObject(), MonitorElement::getRefTH1D(), MonitorElement::getRefTH1F(), MonitorElement::getRefTH1S(), MonitorElement::getRefTProfile(), MonitorElement::getRootObject(), MonitorElement::getTH1D(), MonitorElement::getTH1F(), MonitorElement::getTH1S(), MonitorElement::getTProfile(), h, MonitorElement::kind(), plotBeamSpotDB::last, Max(), indexGen::s2, combinedConstraintHelpers::sum2(), and w2.

{
  const double difprec = 1e-5;
   
  if (!me) 
    return -1;
  if (!me->getRootObject() || !me->getRefRootObject()) 
    return -1;
  TH1* h=0;
  TH1* ref_=0;

  if (verbose_>1) 
    std::cout << "QTest:" << getAlgoName() << "::runTest called on " 
              << me-> getFullname() << "\n";
  //-- TH1F
  if (me->kind()==MonitorElement::DQM_KIND_TH1F)
  { 
    h = me->getTH1F(); // access Test histo
    ref_ = me->getRefTH1F(); //access Ref histo
  } 
  //-- TH1S
  else if (me->kind()==MonitorElement::DQM_KIND_TH1S)
  { 
    h = me->getTH1S(); // access Test histo
    ref_ = me->getRefTH1S(); //access Ref histo
  } 
  //-- TH1D
  else if (me->kind()==MonitorElement::DQM_KIND_TH1D)
  { 
    h = me->getTH1D(); // access Test histo
    ref_ = me->getRefTH1D(); //access Ref histo
  } 
  //-- TProfile
  else if (me->kind()==MonitorElement::DQM_KIND_TPROFILE)
  {
    h = me->getTProfile(); // access Test histo
    ref_ = me->getRefTProfile(); //access Ref histo
  }
  else
  { 
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov"
                << " ME does not contain TH1F/TH1S/TH1D/TProfile, exiting\n"; 
    return -1;
  } 
   
  //-- isInvalid ? - Check consistency in number of channels
  int ncx1 = h->GetXaxis()->GetNbins(); 
  int ncx2 = ref_->GetXaxis()->GetNbins();
  if ( ncx1 !=  ncx2)
  {
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov"
                << " different number of channels! ("
                << ncx1 << ", " << ncx2 << "), exiting\n";
    return -1;
  } 
  //-- isInvalid ? - Check consistency in channel edges
  double diff1 = TMath::Abs(h->GetXaxis()->GetXmin() - ref_->GetXaxis()->GetXmin());
  double diff2 = TMath::Abs(h->GetXaxis()->GetXmax() - ref_->GetXaxis()->GetXmax());
  if (diff1 > difprec || diff2 > difprec)
  {
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov"
                << " histograms with different binning, exiting\n";
    return -1;
  }

  //--  QUALITY TEST itself 
  Bool_t afunc1 = kFALSE; Bool_t afunc2 = kFALSE;
  double sum1 = 0, sum2 = 0;
  double ew1, ew2, w1 = 0, w2 = 0;
  int bin;
  for (bin=1;bin<=ncx1;bin++)
  {
    sum1 += h->GetBinContent(bin);
    sum2 += ref_->GetBinContent(bin);
    ew1   = h->GetBinError(bin);
    ew2   = ref_->GetBinError(bin);
    w1   += ew1*ew1;
    w2   += ew2*ew2;
  }
  
  if (sum1 == 0)
  {
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov"
                << " Test Histogram: " << h->GetName() 
                << ": integral is zero, exiting\n";
    return -1;
  }
  if (sum2 == 0)
  {
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov"
                << " Ref Histogram: " << ref_->GetName() 
                << ": integral is zero, exiting\n";
    return -1;
  }

  double tsum1 = sum1; double tsum2 = sum2;
  tsum1 += h->GetBinContent(0);
  tsum2 += ref_->GetBinContent(0);
  tsum1 += h->GetBinContent(ncx1+1);
  tsum2 += ref_->GetBinContent(ncx1+1);

  // Check if histograms are weighted.
  // If number of entries = number of channels, probably histograms were
  // not filled via Fill(), but via SetBinContent()
  double ne1 = h->GetEntries();
  double ne2 = ref_->GetEntries();
  // look at first histogram
  double difsum1 = (ne1-tsum1)/tsum1;
  double esum1 = sum1;
  if (difsum1 > difprec && int(ne1) != ncx1)
  {
    if (h->GetSumw2N() == 0)
    {
      if (verbose_>0) 
        std::cout << "QTest:Comp2RefKolmogorov"
                  << " Weighted events and no Sumw2 for "
              << h->GetName() << "\n";
    }
    else
    {
      esum1 = sum1*sum1/w1;  //number of equivalent entries
    }
  }
  // look at second histogram
  double difsum2 = (ne2-tsum2)/tsum2;
  double esum2   = sum2;
  if (difsum2 > difprec && int(ne2) != ncx1)
  {
    if (ref_->GetSumw2N() == 0)
    {
      if (verbose_>0) 
        std::cout << "QTest:Comp2RefKolmogorov"
                  << " Weighted events and no Sumw2 for "
              << ref_->GetName() << "\n";
    }
    else
    {
      esum2 = sum2*sum2/w2;  //number of equivalent entries
    }
  }

  double s1 = 1/tsum1; double s2 = 1/tsum2;
  // Find largest difference for Kolmogorov Test
  double dfmax =0, rsum1 = 0, rsum2 = 0;
  // use underflow bin
  int first = 0; // 1
  // use overflow bin
  int last  = ncx1+1; // ncx1
  for ( bin=first; bin<=last; bin++)
  {
    rsum1 += s1*h->GetBinContent(bin);
    rsum2 += s2*ref_->GetBinContent(bin);
    dfmax = TMath::Max(dfmax,TMath::Abs(rsum1-rsum2));
  }

  // Get Kolmogorov probability
  double z = 0;
  if (afunc1)      z = dfmax*TMath::Sqrt(esum2);
  else if (afunc2) z = dfmax*TMath::Sqrt(esum1);
  else             z = dfmax*TMath::Sqrt(esum1*esum2/(esum1+esum2));

  // This numerical error condition should never occur:
  if (TMath::Abs(rsum1-1) > 0.002)
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov" 
                << " Numerical problems with histogram "
                << h->GetName() << "\n";
  if (TMath::Abs(rsum2-1) > 0.002)
    if (verbose_>0) 
      std::cout << "QTest:Comp2RefKolmogorov" 
                << " Numerical problems with histogram "
                << ref_->GetName() << "\n";

  return TMath::KolmogorovProb(z);
}