SymmetryFit Class Reference

#include <SymmetryFit.h>

Static Public Member Functions
static TF1 *	fitfunction ()
static std::string	name (std::string base)
static std::vector< double >	pol2_from_pol2 (TH1 *hist)
static std::vector< double >	pol2_from_pol3 (TH1 *hist)
static TH1 *	symmetryChi2 (std::string, const std::vector< TH1 * > &, const std::pair< unsigned, unsigned >)
static TH1 *	symmetryChi2 (const TH1 *, const std::pair< unsigned, unsigned >)

Private Member Functions
float	chi2 (std::pair< unsigned, unsigned >)
float	chi2_element (std::pair< unsigned, unsigned >)
std::vector< std::pair < unsigned, unsigned > >	continuousRanges () const
void	fillchi2 ()
std::pair< unsigned, unsigned >	findUsableMinMax () const
int	fit ()
void	makeChi2Histogram ()
SymmetryFit	operator+= (const SymmetryFit &R)
	SymmetryFit (const TH1 *, const std::pair< unsigned, unsigned >)

Private Attributes
TH1 *	chi2_
const unsigned	minDF_
const std::pair< unsigned, unsigned >	minmaxUsable_
unsigned	ndf_
const std::pair< unsigned, unsigned >	range_
const TH1 *	symm_candidate_

Detailed Description

Definition at line 8 of file SymmetryFit.h.

Constructor & Destructor Documentation

SymmetryFit::SymmetryFit ( const TH1 *  h, const std::pair< unsigned, unsigned >  r  )

private

Definition at line 38 of file SymmetryFit.cc.

References fillchi2(), and makeChi2Histogram().

    : symm_candidate_(h),
      minDF_(r.second - r.first),
      range_(r),
      minmaxUsable_(findUsableMinMax()),
      ndf_(minmaxUsable_.first < minmaxUsable_.second ? minmaxUsable_.second - minmaxUsable_.first : 0),
      chi2_(nullptr) {
  makeChi2Histogram();
  fillchi2();
}

Member Function Documentation

float SymmetryFit::chi2 ( std::pair< unsigned, unsigned >  point )

private

Definition at line 106 of file SymmetryFit.cc.

References chi2_element(), mps_fire::i, minmaxUsable_, ndf_, and XX.

Referenced by fillchi2().

                                                         {
  point.first -= minmaxUsable_.first;
  point.second += minmaxUsable_.first;
  float XX = 0;
  unsigned i = ndf_;
  while (i-- > 0) {
    XX += chi2_element(point);
    point.first--;
    point.second++;
  }
  return XX;
}

float SymmetryFit::chi2_element ( std::pair< unsigned, unsigned >  range )

private

Definition at line 119 of file SymmetryFit.cc.

References cms::cuda::assert(), funct::pow(), and symm_candidate_.

Referenced by chi2().

                                                                 {
  float y0(symm_candidate_->GetBinContent(range.first)), y1(symm_candidate_->GetBinContent(range.second)),
      e0(symm_candidate_->GetBinError(range.first)), e1(symm_candidate_->GetBinError(range.second));
  assert(e0 && e1);

  return pow(y0 - y1, 2) / (e0 * e0 + e1 * e1);
}

std::vector< std::pair< unsigned, unsigned > > SymmetryFit::continuousRanges ( ) const

private

Definition at line 81 of file SymmetryFit.cc.

References mps_fire::i, sistrip::SpyUtilities::range(), diffTwoXMLs::ranges, and symm_candidate_.

Referenced by findUsableMinMax().

                                                                            {
  std::vector<std::pair<unsigned, unsigned> > ranges;
  const unsigned Nbins = symm_candidate_->GetNbinsX();
  unsigned i = 0;
  while (++i <= Nbins) {
    if (symm_candidate_->GetBinError(i)) {
      std::pair<unsigned, unsigned> range(i, i + 1);
      while (++i <= Nbins && symm_candidate_->GetBinError(i))
        range.second++;
      ranges.push_back(range);
    }
  }
  return ranges;
}

void SymmetryFit::fillchi2 ( )

private

Definition at line 96 of file SymmetryFit.cc.

References chi2(), chi2_, mps_fire::i, dttmaxenums::L, minDF_, ndf_, dttmaxenums::R, and range_.

Referenced by SymmetryFit().

                           {
  if (ndf_ < minDF_)
    return;

  for (int i = 1; i <= chi2_->GetNbinsX(); ++i) {
    const unsigned L(range_.first - 1 + (i - 1) / 2), R(range_.first + i / 2);
    chi2_->SetBinContent(i, chi2(std::make_pair(L, R)));
  }
}

std::pair< unsigned, unsigned > SymmetryFit::findUsableMinMax ( ) const

private

Definition at line 58 of file SymmetryFit.cc.

References generateEDF::cont, continuousRanges(), first, dttmaxenums::L, SiStripPI::max, SiStripPI::min, dttmaxenums::R, range_, and edm::second().

                                                                {
  unsigned NEAR(0), FAR(0);
  const std::vector<std::pair<unsigned, unsigned> > cont = continuousRanges();
  for (unsigned L = 0; L < cont.size(); L++) {
    if (cont[L].first > range_.first)
      continue;
    for (unsigned R = L; R < cont.size(); R++) {
      if (cont[R].second < range_.second)
        continue;

      const unsigned far = std::min(range_.first - cont[L].first, cont[R].second - range_.second);
      const unsigned near = std::max(range_.second < cont[L].second ? 0 : range_.second - cont[L].second,
                                     cont[R].first < range_.first ? 0 : cont[R].first - range_.first);

      if ((far > near) && (far - near) > (FAR - NEAR)) {
        FAR = far;
        NEAR = near;
      }
    }
  }
  return std::make_pair(NEAR, FAR);
}

int SymmetryFit::fit ( )

private

Definition at line 127 of file SymmetryFit.cc.

References chi2_, validate-o2o-wbm::f, fitfunction(), ndf_, AlCaHLTBitMon_ParallelJobs::p, and pol2_from_pol3().

Referenced by trackingPlots.Iteration::modules(), and symmetryChi2().

                     {
  std::vector<double> p = pol2_from_pol3(chi2_);
  if (p.empty() || p[0] < chi2_->GetBinCenter(1) || p[0] > chi2_->GetBinCenter(chi2_->GetNbinsX()))
    return 7;

  std::unique_ptr<TF1> f(fitfunction());
  f->SetParameter(0, p[0]);
  f->SetParLimits(0, p[0], p[0]);
  f->SetParameter(1, p[1]);
  f->SetParLimits(1, p[1], p[1]);
  f->SetParameter(2, p[2]);
  f->SetParLimits(2, p[2], p[2]);
  f->SetParameter(3, ndf_);
  f->SetParLimits(3, ndf_, ndf_);  //Fixed
  chi2_->Fit(f.get(), "WQ");
  return 0;
}

TF1 * SymmetryFit::fitfunction ( )

static

Definition at line 145 of file SymmetryFit.cc.

References validate-o2o-wbm::f.

Referenced by fit().

                              {
  TF1* f = new TF1("SymmetryFit", "((x-[0])/[1])**2+[2]+0*[3]");
  f->SetParName(0, "middle");
  f->SetParName(1, "uncertainty");
  f->SetParName(2, "chi2");
  f->SetParName(3, "NDF");
  return f;
}

void SymmetryFit::makeChi2Histogram ( )

private

Definition at line 49 of file SymmetryFit.cc.

References chi2_, name(), range_, AlCaHLTBitMon_QueryRunRegistry::string, symm_candidate_, and up.

Referenced by SymmetryFit().

                                    {
  std::string XXname = name(symm_candidate_->GetName());
  unsigned Nbins = 2 * (range_.second - range_.first) + 1;
  double binwidth = symm_candidate_->GetBinWidth(1);
  double low = symm_candidate_->GetBinCenter(range_.first) - 3 * binwidth / 4;
  double up = symm_candidate_->GetBinCenter(range_.second - 1) + 3 * binwidth / 4;
  chi2_ = new TH1F(XXname.c_str(), "", Nbins, low, up);
}

static std::string SymmetryFit::name ( std::string  base )

inlinestatic

Definition at line 12 of file SymmetryFit.h.

Referenced by config.CFG::__str__(), geometryComparison.GeometryComparison::createScript(), validation.Sample::digest(), primaryVertexResolution.PrimaryVertexResolution::getRepMap(), primaryVertexValidation.PrimaryVertexValidation::getRepMap(), zMuMuValidation.ZMuMuValidation::getRepMap(), VIDSelectorBase.VIDSelectorBase::initialize(), makeChi2Histogram(), and LA_Filler_Fitter::method().

{ return base + "_symmchi2"; }

SymmetryFit SymmetryFit::operator+= ( const SymmetryFit &  R )

inlineprivate

Definition at line 26 of file SymmetryFit.h.

References chi2_, and ndf_.

                                               {
    ndf_ += R.ndf_;
    chi2_->Add(R.chi2_);
    return *this;
  }

std::vector< double > SymmetryFit::pol2_from_pol2 ( TH1 *  hist )

static

Definition at line 154 of file SymmetryFit.cc.

References cms::cuda::func, AlCaHLTBitMon_ParallelJobs::p, mathSSE::sqrt(), mps_update::status, and findQualityFiles::v.

                                                       {
  std::vector<double> v;

  //Need our own copy for thread safety
  TF1 func("mypol2", "pol2");
  int status = hist->Fit(&func, "WQ");
  if (!status) {
    std::vector<double> p;
    p.push_back(func.GetParameter(0));
    p.push_back(func.GetParameter(1));
    p.push_back(func.GetParameter(2));
    if (p[2] > 0) {
      v.push_back(-0.5 * p[1] / p[2]);
      v.push_back(1. / sqrt(p[2]));
      v.push_back(p[0] - 0.25 * p[1] * p[1] / p[2]);
    }
  }
  return v;
}

std::vector< double > SymmetryFit::pol2_from_pol3 ( TH1 *  hist )

static

Definition at line 174 of file SymmetryFit.cc.

References cms::cuda::func, AlCaHLTBitMon_ParallelJobs::p, funct::pow(), mathSSE::sqrt(), mps_update::status, and findQualityFiles::v.

Referenced by fit().

                                                       {
  std::vector<double> v;

  auto func = std::make_unique<TF1>("mypol3", "pol3");
  int status = hist->Fit(func.get(), "WQ");
  if (!status) {
    std::vector<double> p;
    p.push_back(func->GetParameter(0));
    p.push_back(func->GetParameter(1));
    p.push_back(func->GetParameter(2));
    p.push_back(func->GetParameter(3));
    double radical = p[2] * p[2] - 3 * p[1] * p[3];
    if (radical > 0) {
      double x0 = (-p[2] + sqrt(radical)) / (3 * p[3]);
      v.push_back(x0);
      v.push_back(pow(radical, -0.25));
      v.push_back(p[0] + p[1] * x0 + p[2] * x0 * x0 + p[3] * x0 * x0 * x0);
    }
  }
  return v;
}

TH1 * SymmetryFit::symmetryChi2 ( std::string  basename, const std::vector< TH1 * > &  candidates, const std::pair< unsigned, unsigned >  range  )

static

Definition at line 6 of file SymmetryFit.cc.

References chi2_, fit(), and mps_update::status.

Referenced by LA_Filler_Fitter::make_and_fit_symmchi2().

                                                                        {
  TH1* fake = (TH1*)(candidates[0]->Clone(basename.c_str()));
  fake->Reset();
  SymmetryFit combined(fake, range);
  delete fake;

  for (auto const* candidate : candidates) {
    SymmetryFit sf(candidate, range);
    combined += sf;
    delete sf.chi2_;
  }

  int status = combined.fit();
  if (status) {
    delete combined.chi2_;
    combined.chi2_ = nullptr;
  }
  return combined.chi2_;
}

TH1 * SymmetryFit::symmetryChi2 ( const TH1 *  candidate, const std::pair< unsigned, unsigned >  range  )

static

Definition at line 28 of file SymmetryFit.cc.

References chi2_, fit(), and mps_update::status.

                                                                                            {
  SymmetryFit sf(candidate, range);
  int status = sf.fit();
  if (status) {
    delete sf.chi2_;
    sf.chi2_ = nullptr;
  }
  return sf.chi2_;
}

Member Data Documentation

TH1* SymmetryFit::chi2_

private

Definition at line 36 of file SymmetryFit.h.

Referenced by fillchi2(), fit(), makeChi2Histogram(), operator+=(), and symmetryChi2().

const unsigned SymmetryFit::minDF_

private

Definition at line 33 of file SymmetryFit.h.

Referenced by fillchi2().

const std::pair<unsigned, unsigned> SymmetryFit::minmaxUsable_

private

Definition at line 34 of file SymmetryFit.h.

Referenced by chi2().

unsigned SymmetryFit::ndf_

private

Definition at line 35 of file SymmetryFit.h.

Referenced by chi2(), fillchi2(), fit(), and operator+=().

const std::pair<unsigned, unsigned> SymmetryFit::range_

private

Definition at line 34 of file SymmetryFit.h.

Referenced by fillchi2(), findUsableMinMax(), and makeChi2Histogram().

const TH1* SymmetryFit::symm_candidate_

private

Definition at line 32 of file SymmetryFit.h.

Referenced by chi2_element(), continuousRanges(), and makeChi2Histogram().