def loop_over_smearings(): "Extract scale and resolution for mass and energy." ## Set initial value for the mode calculation of the phoERes shape. phoERes.setVal(0) ## Set initial value for the mode calculation of the mmgMass shape. mmgMass.setVal(91.2) ## Define then nominal model for the photon energy smearing function. phoEResPdf = ParametrizedKeysPdf('phoEResPdf_nominal', 'phoEResPdf_nominal', phoERes, phoScale, phoRes, data, ROOT.RooKeysPdf.NoMirror, 1.5) ## Define the nominal mmg mass model. mmgMassPdf = ParametrizedKeysPdf('mmgMassPdf_nominal', 'mmgMassPdf_nominal', mmgMass, massPeak, massWidth, data, ROOT.RooKeysPdf.NoMirror, 1.5) w.Import(phoEResPdf) w.Import(mmgMassPdf) w.Import(phoEResPdf.shape) w.Import(mmgMassPdf.shape) for i, (s, r) in enumerate(zip(stargets, rtargets)): ## Get the smeared data. phoScaleTarget.setVal(s) phoResTarget.setVal(r) sdata = calibrator.get_smeared_data(s, r) ## Save the smeared data in the workspace. sdata.SetName('sdata_%d' % i) sdata.SetTitle('smeared mmg data %d' % i) w.Import(sdata) ## Build the energy and mass models for each smearing since the ## shapes may have changed. ## Guess the right values of the fit parameters. phoScale.setVal(s) phoRes.setVal(phoEResPdf.shapewidth) massScale.setVal(100 * (mmgMassPdf.shapemode / mZ.getVal() - 1)) massRes.setVal(100 * mmgMassPdf.shapewidth / mmgMassPdf.shapemode) ## Fit the models. phoFit = phoEResPdf.fitTo( sdata, roo.Range(-50, 50), # roo.Range(s - 5*r, s + 5*r), # roo.PrintLevel(-1), roo.Save()) massFit = mmgMassPdf.fitTo( sdata, roo.Range(60, 120), # roo.PrintLevel(-1), roo.Save()) ## Store results in the workspace. w.Import(phoFit) w.Import(massFit) w.saveSnapshot('smear_%d' % i, params, True)
def plot_nominal_mmgmass_with_shape_and_fit(): """Plot the nominal MC mmg mass data overlayed with the pdf shape and fit.""" canvases.next('NominalMmgMassWithShapeAndFit') plot = mmgMass.frame(roo.Range(75, 105)) plot.SetTitle("m(#mu#mu#gamma) overlayed with PDF shape (blue) " "and it's parametrized fit (dashed red)") data.plotOn(plot) ## Define the mmg mass model. mmgMassPdf = ParametrizedKeysPdf('mmgMassPdf', 'mmgMassPdf', mmgMass, massPeak, massWidth, data, ROOT.RooKeysPdf.NoMirror, 1.5) ## PDF shape mmgMassPdf.shape.plotOn(plot) ## Parametrized fit of the PDF shape mmgMassPdf.fitTo(data, roo.Range(60, 120), roo.PrintLevel(-1)) mmgMassPdf.plotOn(plot, roo.LineColor(ROOT.kRed), roo.LineStyle(ROOT.kDashed)) plot.Draw() sshape = 100 * (mmgMassPdf.shapemode / mZ.getVal() - 1) rshape = 100 * mmgMassPdf.shapewidth / mmgMassPdf.shapemode Latex([ 's_{shape}: %.3f %%' % sshape, 's_{fit}: %.3f #pm %.3f %%' % (massScale.getVal(), massScale.getError()), 's_{fit} - s_{shape}: %.4f #pm %.4f %%' % (massScale.getVal() - sshape, massScale.getError()), 'r_{shape}: %.3f %%' % rshape, 'r_{fit}: %.3f #pm %.3f %%' % (massRes.getVal(), massRes.getError()), 'r_{fit} - r_{shape}: %.4f #pm %.4f %%' % (massRes.getVal() - rshape, massRes.getError()), 'r_{fit}/r_{shape}: %.4f #pm %.4f' % (massRes.getVal() / rshape, massRes.getError() / rshape), ], position=(0.2, 0.8)).draw()
def plot_training_phoeres_with_shape_and_fit(): """Plot the nominal MC photon energy smearing overlayed with the pdf shape and fit.""" canvases.next('TrainingPhoEResWithShapeAndFit') plot = phoERes.frame(roo.Range(-7.5, 5)) plot.SetTitle("Photon energy smearing overlayed with PDF shape (blue) " "and it's parametrized fit (dashed red)") data.plotOn(plot) ## Define model for the photon energy smearing function Ereco/Etrue - 1. phoEResPdf = ParametrizedKeysPdf('phoEResPdf', 'phoEResPdf', phoERes, phoScale, phoRes, data, ROOT.RooKeysPdf.NoMirror, 1.5) ## PDF shape phoEResPdf.shape.plotOn(plot) ## Parametrized fit of the PDF shape phoEResPdf.fitTo(data, roo.Range(-50, 50), roo.PrintLevel(-1)) phoEResPdf.plotOn(plot, roo.LineColor(ROOT.kRed), roo.LineStyle(ROOT.kDashed)) plot.Draw() Latex([ 's_{shape}: %.3f %%' % phoEResPdf.shapemode, 's_{fit}: %.3f #pm %.3f %%' % (phoScale.getVal(), phoScale.getError()), 's_{fit} - s_{shape}: %.4f #pm %.4f %%' % (phoScale.getVal() - phoEResPdf.shapemode, phoScale.getError()), 'r_{shape}: %.3f %%' % phoEResPdf.shapewidth, 'r_{fit}: %.3f #pm %.3f %%' % (phoRes.getVal(), phoRes.getError()), 'r_{fit} - r_{shape}: %.4f #pm %.4f %%' % (phoRes.getVal() - phoEResPdf.shapewidth, phoRes.getError()), 'r_{fit}/r_{shape}: %.4f #pm %.4f' % (phoRes.getVal() / phoEResPdf.shapewidth, phoRes.getError() / phoEResPdf.shapewidth), ], position=(0.2, 0.8)).draw()
def _get_mctruth_scale_and_resolution(self): ## Enlarge the range of the observable to get vanishing tails for ## the photon energy scale resolution # savrange = (self.phoERes.getMin(), self.phoERes.getMax()) # self.phoERes.setRange(savrange[0] - 10, savrange[1] + 10) ## Build the model for the photon energy resolution. self.phoEResPdf = ParametrizedKeysPdf('phoEResPdf', 'phoEResPdf', self.phoERes, self.s, self.r, self.data, ROOT.RooKeysPdf.NoMirror, self.rho) # self.phoERes.setRange(*savrange) ## Set sensible initial values self.s.setVal(self.phoEResPdf.shapemode) self.r.setVal(self.phoEResPdf.shapewidth) ## Extract the MC truth scale and resolution from MC self.fitresult_mctruth = self.phoEResPdf.fitTo( self.data, roo.PrintLevel(self.printlevel), roo.SumW2Error(False), roo.Range(-50, 50), roo.Save(), roo.Strategy(2)) self.w.Import(self.fitresult_mctruth) ## Store the MC truth scale and resolution for source, target in zip([self.s, self.r], [self.s0, self.r0]): target.setVal(source.getVal()) target.setError(source.getError()) target.setAsymError(source.getErrorLo(), source.getErrorHi()) # self.s0.setVal(self.s.getVal()) # self.r0.setVal(self.r.getVal()) self.w.saveSnapshot('sr_mctruth', self.sr) self.w.saveSnapshot('sr0_mctruth', self.sr0) self.s0.setConstant(True) self.r0.setConstant(True)
data.addColumn(t1xt2func) t1xt2func.SetName('t1xt2func') tfunc.SetName('t') data.addColumn(tfunc) tfunc.SetName('tfunc') t1xt2vtdata = data.reduce(ROOT.RooArgSet(t, t1xt2)) data = data.reduce(ROOT.RooArgSet(mmgMass, mmMass, phoERes, mmgMassPhoGenE)) ## Build the model fT1(t1) for log(mmgMassPhoGenE^2 - mmMass^2) t.setRange(5, 10) # t.setVal(8.3) nomirror = ROOT.RooKeysPdf.NoMirror ## t1pdf = ROOT.RooKeysPdf('t1pdf', 't1pdf', t, t1data, nomirror, 1.5) t1mode = w.factory('t1mode[8.3,5,10]') t1width = w.factory('t1width[0.2,0.01,5]') t1pdf = ParametrizedKeysPdf('t1pdf', 't1pdf', t, t1mode, t1width, t1data, nomirror, 1.5) t1pdf.fitTo(t1data) t1mode.setConstant(True) t1width.setConstant(True) ## TODO: use parametrized KEYS PDF with forced ranges and fit it to data. ## Build the model fT2(t2|s,r) for log(Ereco/Egen) ft2(t2|r,s) t.setRange(-1, 1) t.setVal(0) t2pdf = LogPhoeresKeysPdf('t2pdf', 't2pdf', phoERes, t, phoScale, phoRes, data,
sdata.SetName(dataname) w.Import(sdata) pdfname = '_'.join(['mmgMassPdf', name, bintag]) pdfname = pdfname.replace('-', 'to') ## KEYS PDF Dilemma: RooKeysPdf is deprecated, ## RooNDKeysPdf cannot be stored in a workspace, ## RooMomentMorph constructor works in workspace factory only ## pdf = ROOT.RooNDKeysPdf(pdfname, pdfname, ## ROOT.RooArgList(mmgMass), sdata, "a", 1.5) ## -> Stick to deprecated RooKeysPdf for now. ## mmgMass.setRange(40, 140) peak = w.factory('%s_mode[91.2, 60, 120]' % pdfname) width = w.factory('%s_effsigma[3, 0.1, 20]' % pdfname) pdf = ParametrizedKeysPdf(pdfname + '_pkeys', pdfname + '_pkyes', mmgMass, peak, width, sdata, ROOT.RooKeysPdf.NoMirror, 1.5) savrange = (mmgMass.getMin(), mmgMass.getMax()) normrange = (40, 130) fitrange = (60, 120) mmgMass.setRange(*fitrange) peak.setVal(pdf.shapemode) width.setVal(pdf.shapewidth) pdf.fitTo(sdata, roo.Range(*fitrange), roo.Strategy(2)) w.Import(pdf) ## peak.setConstant() ## width.setConstant() hist = pdf.createHistogram(pdfname + '_hist', mmgMass, roo.Binning(1000)) dhist = ROOT.RooDataHist(pdfname + '_dhist', pdfname + '_hist', ROOT.RooArgList(mmgMass), hist)
def __init__(self, name, title, mass, phos, phor, data, workspace, phostarget, phortargets, rho=1.5, mirror=ROOT.RooKeysPdf.NoMirror, mrangetrain=(40, 140), mrangenorm=(50, 130), mrangefit=(60, 120)): '''PhosphorModel4(str name, str title, RooRealVar mass, RooRealVar phos, RooRealVar phor, RooDataSet data, float phostarget, [float] phortargets, float rho=1.5, int mirror=ROOT.RooKeysPdf.NoMirror) name - PDF name title - PDF title mass - mumugamma invariant mass (GeV), observable phos - photon energy scale (%), parameter phor - photon energy resolution (%), paramter data - (mmMass, mmgMass, phoERes = 100*(phoEreco/phoEgen - 1), dataset on which the shapes of reference PDFs are trained. phostarget - target reference value of the photon energy scale at which the model is being trained phortargetss - a list of target photon energy resolution values for the moment morphing rho - passed to trained RooKeysPdfs mirror - passed to trained RooKeysPdfs ''' ## Attach args. self._name = name self._title = title self._mass = mass self._phos = phos self._phor = phor self._data = data self._phostarget = phostarget self._phortargets = phortargets[:] self._rho = rho self._mirror = mirror ## Attach other attributes. self._massrange = (mass.getMin(), mass.getMax()) self._sdata_list = [] self._phostrue_list = [] self._phortrue_list = [] self._dm_dphos_list = [] self._msubs_list = [] self._keys_pdfs = [] self._keys_modes = [] self._keys_effsigmas = [] self._keys_fitresults = [] self._pdfs = [] self._custs = [] # self._pdfrefs = [] self._mrefs = [] self._phormorphs = [] self._phorhists = [] self._workspace = workspace ## self._workspace = ROOT.RooWorkspace(name + '_workspace', ## title + ' workspace') w = self._workspace self.w = w ## Import important args in workspace. # w.Import(ROOT.RooArgSet(mass, phos, phor)) w.Import(mass) w.Import(phos) w.Import(phor) w.Import(self._data) w.factory('ConstVar::{name}_phostarget({value})'.format( name=name, value=self._phostarget)) ## Define the morphing parameter. This an identity with the ## photon resolution for now. mpar = self._mpar = w.factory( 'expr::{name}_mpar("{phor}", {{{phor}}})'.format( ## 'expr::{name}_mpar("2 + sqrt(0.5^2 + 0.05 * {phor}^2)", {{{phor}}})'.format( ## 'expr::{name}_mpar("2.325+sqrt(0.4571 + (0.1608*{phor})^2)", {{{phor}}})'.format( name=name, phor=phor.GetName())) ## Define the formula for dlog(m)/dphos. self._dm_dphos_func = w.factory(''' expr::dm_dphos_func("0.5 * (1 - mmMass^2 / mmgMass^2) * mmgMass", {mmMass, mmgMass}) ''') ## Get the calibrator. self._calibrator = MonteCarloCalibrator(self._data) ## Loop over target reference photon energy resolutions in phortargets. for index, phortarget in enumerate(self._phortargets): ## Store the target photon resolution value. w.factory('ConstVar::{name}_phortarget_{index}({value})'.format( name=name, index=index, value=phortarget)) ## Get the corresponding smeared RooDataSet sdata named ## {name}_sdata_{index} and attach it to self._sdata sdata = self._calibrator.get_smeared_data( self._phostarget, phortarget, name + '_sdata_%d' % index, title + ' sdata %d' % index, ## Get the true scale and resolution with errors. (This can be ## added to the calibrator and snapshots of ## self._calibrator.s and self._calibrator.r stored as ## {name}_sdata_{index}_sr in self._calibrator.w) dofit=True) self._sdata_list.append(sdata) w.Import(sdata) phostrue = ROOT.RooRealVar(self._calibrator.s, name + '_phostrue_%d' % index) phortrue = ROOT.RooRealVar(self._calibrator.r, name + '_phortrue_%d' % index) phostrue.setConstant(True) phortrue.setConstant(True) self._phostrue_list.append(phostrue) self._phortrue_list.append(phortrue) w.Import(phostrue) w.Import(phortrue) ## Calculate the dlogm/dphos {name}_dm_dphos_{index} ## for the smeared dataset. sdata.addColumn(self._dm_dphos_func) dm_dphos = w.factory(''' {name}_dm_dphos_{index}[{mean}, 0, 1] '''.format(name=name, index=index, mean=sdata.mean(sdata.get()['dm_dphos_func']))) dm_dphos.setConstant(True) self._dm_dphos_list.append(dm_dphos) ## Define the mass scaling {name}_msubs{i} introducing ## the dependence on phos. This needs self._calibrator.s and ## dm_dphos. ## msubs = w.factory( ## ''' ## LinearVar::{msubs}( ## {mass}, 1, ## expr::{offset}( ## "- 0.01 * {dm_dphos} * ({phos} - {phostrue})", ## {{ {dm_dphos}, {phos}, {phostrue} }} ## ) ## ) ## '''.format(msubs = name + '_msubs_%d' % index, ## offset = name + '_msubs_offset_%d' % index, ## mass = self._mass.GetName(), ## dm_dphos = dm_dphos.GetName(), ## phos = self._phos.GetName(), ## phostrue = phostrue.GetName()) ## ) ## LinearVar cannot be persisted. msubs = w.factory(''' expr::{msubs}( "{mass} - 0.01 * {dm_dphos} * ({phos} - {phostrue})", {{ {mass}, {dm_dphos}, {phos}, {phostrue} }} ) '''.format(msubs=name + '_msubs_%d' % index, mass=self._mass.GetName(), dm_dphos=dm_dphos.GetName(), phos=self._phos.GetName(), phostrue=phostrue.GetName())) self._msubs_list.append(msubs) ## Build the corresponding parametrized KEYS PDF {name}_kyes_{index} ## with {name}_keys_mode_{index} and ## {name}_keys_effsigma_{index}. keys_mode = w.factory( '{name}_keys_mode_{index}[91.2, 60, 120]'.format(name=name, index=index)) keys_effsigma = w.factory( '{name}_keys_effsigma_{index}[3, 0.1, 60]'.format(name=name, index=index)) mass.setRange(*mrangetrain) keys_pdf = ParametrizedKeysPdf(name + '_keys_pdf_%d' % index, name + '_keys_pdf_%d' % index, mass, keys_mode, keys_effsigma, sdata, rho=self._rho) self._keys_modes.append(keys_mode) self._keys_effsigmas.append(keys_effsigma) self._keys_pdfs.append(keys_pdf) ## Fit the KEYS PDF to the training data and save the result ## {name}_keys_fitresult_{index} and parameter snapshots ## {name}_keys_mctrue_{index}. mass.setRange(*mrangenorm) keys_fitresult = keys_pdf.fitTo(sdata, roo.Range(*mrangefit), roo.Strategy(2), roo.NumCPU(8), roo.Save(True)) self._keys_fitresults.append(keys_fitresult) w.Import(keys_fitresult, name + '_keys_fitresult_%d' % index) w.saveSnapshot( name + '_mctrue_%d' % index, ','.join([ phostrue.GetName(), phortrue.GetName(), keys_mode.GetName(), keys_effsigma.GetName() ])) ## Sample the fitted KEYS PDF to a histogram {name}_hist_{index}. mass.setRange(*mrangetrain) hist = keys_pdf.createHistogram(name + '_hist_%d' % index, mass, roo.Binning('cache')) ## Build a RooDataHist {name}_dhist{index} of the sampled histogram. dhist = ROOT.RooDataHist(name + '_dhist_%d' % index, name + '_dhist_%d' % index, ROOT.RooArgList(mass), hist) w.Import(dhist) ## Build a RooHistPdf {name}_pdf_{index} using the dhist and msubs. ## pdf = w.factory( pdf = w.factory('HistPdf::{name}({{{mass}}}, {dhist}, 1)'.format( name=name + '_pdf_%d' % index, msubs=msubs.GetName(), mass=mass.GetName(), dhist=dhist.GetName())) self._pdfs.append(pdf) mass.setRange(*self._massrange) ## Calculate morphing parameter reference values float mref[index]. phorval = phor.getVal() phor.setVal(phortrue.getVal()) self._mrefs.append(mpar.getVal()) phor.setVal(phorval) ## End of loop over target phortargets ## Make the reference and cache binnings in phor self._check_phor_ranges() partitions = self._partition_binning(self._phor, 'cache', 'reference') ## Loop over phor reference bins and define pairwise RooMomentMorphs. for ilo in range(len(self._mrefs) - 1): ihi = ilo + 1 mlo = self._mrefs[ilo] mhi = self._mrefs[ihi] pdflo = self._pdfs[ilo] pdfhi = self._pdfs[ihi] phormorph = w.factory(''' MomentMorph::{name}_phormorph_{ilo}to{ihi}( {mpar}, {{{mass}}}, {{{pdfs}}}, {{{mrefs}}} ) '''.format(name=name, ilo=ilo, ihi=ihi, mpar=mpar.GetName(), mass=mass.GetName(), pdfs='%s, %s' % (pdflo.GetName(), pdfhi.GetName()), mrefs='%f, %f' % (mlo, mhi))) self._phormorphs.append(phormorph) ## Sample the morph in a 2D histogram in mass and phor. phorhist = phormorph.createHistogram( name + '_phorhist_%dto%d' % (ilo, ihi), mass, roo.Binning('cache'), roo.YVar(phor, roo.Binning(partitions[ilo]))) self._phorhists.append(phorhist) ## End of loop over phor reference bins. self._stitch_phorhists() self._phor_dhist = phor_dhist = ROOT.RooDataHist( name + '_phor_dhist', name + '_phor_dhist', ROOT.RooArgList(mass, phor), self._phorhist) average_index = (len(self._msubs_list) + 1) / 2 msubs = self._msubs_list[average_index] ## self._model = model = ROOT.RooHistPdf( ## name + '_phor_histpdf', name + '_phor_histpdf', ## ROOT.RooArgList(msubs, phor), ROOT.RooArgList(mass, phor), phor_dhist, 2 ## ) ## self._model = model = ROOT.RooPhosphorPdf( ## name + '_phor_histpdf', name + '_phor_histpdf', mass, msubs, phor, phor_dhist, 2 ## ) ## ## Quick hack to make things work. ## self._customizer = customizer = ROOT.RooCustomizer(model, 'msub') ## customizer.replaceArg(mass, msubs) ## model = customizer.build() # ROOT.RooHistPdf.__init__(self, model) ROOT.RooPhosphorPdf.__init__(self, name, title, mass, msubs, phos, phor, phor_dhist, 2) self.SetName(name) self.SetTitle(title)
canvases.update() sw.Stop() print 'CPU time:', sw.CpuTime(), 's, real time:', sw.RealTime(), 's' ## End of main() ##------------------------------------------------------------------------------ sw = ROOT.TStopwatch() sw.Start() init() get_data() phoEResPdf = ParametrizedKeysPdf('phoEResPdf', 'phoEResPdf', phoERes, phoScale, phoRes, data, ROOT.RooKeysPdf.NoMirror, 1.5) phoEResPdf.fitTo(data, roo.Range(-50, 50)) canvases.next('phoEResPdf').SetGrid() plot = phoERes.frame(roo.Range(-10, 10)) data.plotOn(plot) phoEResPdf.plotOn(plot) phoEResPdf.paramOn(plot) plot.Draw() t = w.factory('t[0,-1,1]') t.SetTitle('log(E_{reco}^{#gamma}/E_{gen}^{#gamma})') tfunc = w.factory('expr::tfunc("log(0.01 * phoERes + 1)", {phoERes})') tfunc.SetName('t') data.addColumn(tfunc)