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#include "RA2/Selection/interface/Selection.h"
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#include <iostream>
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#include <iomanip>
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Selection::Selection(const edm::ParameterSet& iConfig) :
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sequence_( iConfig.getParameter<edm::ParameterSet>("selections") ),
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filterSelection_( iConfig.getParameter<std::vector<std::string> >("filterSelection") ),
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weightName_(iConfig.getParameter<edm::InputTag>("weightName") ),
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Nevents(0)
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{
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// Translate filterSelection strings into selector indices
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//filterSelectionIndices_.reserve(filterSelection_.size());
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for ( size_t i=0; i<filterSelection_.size(); ++i ) {
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filterSelectionIndices_.push_back(sequence_.selectorIndex(filterSelection_[i]));
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SelectionStats_.push_back( Selection::TStatistics() );
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}
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// List all selectors and selection variables
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edm::LogVerbatim("Selection") << "Selectors are:" << std::endl;
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for ( std::vector<const SusyEventSelector*>::const_iterator it = sequence_.selectors().begin();
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it != sequence_.selectors().end(); ++it )
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{
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edm::LogVerbatim("Selection") << " * " << (*it)->name()
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<< " selects on following "
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<< (*it)->numberOfVariables() << " variable(s):";
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for ( unsigned int i=0; i<(*it)->numberOfVariables(); ++i )
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edm::LogVerbatim("Selection") << " - " << (*it)->variableNames()[i];
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edm::LogVerbatim("Selection") << std::endl;
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}
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}
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//________________________________________________________________________________________
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Selection::~Selection() { }
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// ------------ method called on each new Event ------------
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bool
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Selection::filter(edm::Event& iEvent, const edm::EventSetup& iSetup)
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{
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// Retrieve the decision of each selector module
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SelectorDecisions decisions = sequence_.decisions(iEvent);
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edm::Handle< double > event_weight;
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iEvent.getByLabel(weightName_, event_weight);
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weight_ = (event_weight.isValid() ? (*event_weight) : 1.0);
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++Nevents;
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bool dec(true);
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for ( size_t i=0; i<filterSelectionIndices_.size(); ++i ){ // only "filter selection"
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//Filter decision
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dec = dec && decisions.decision(filterSelectionIndices_[i]);
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//Statistics
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SelectionStats_[i].NTotal += weight_;
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if (decisions.decision(i)) SelectionStats_[i].NSelected += weight_;
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if (decisions.cumulativeDecision(i)) SelectionStats_[i].NCumulative += weight_;
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if (decisions.complementaryDecision(i)){
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SelectionStats_[i].Nminus1total += weight_;
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if (decisions.decision(i)) SelectionStats_[i].Nminus1 += weight_;
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}
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}
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// Cutflow-Analysis
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/*
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std::ostringstream dbg;
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dbg << "selector decisions " << std::endl
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<< " name, 2xdecision, 2xcompl. decision, 2xcumul. decision" << std::endl;
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for ( size_t i=0; i<filterSelectionIndices_.size(); ++i ) {
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std::string name = sequence_.selectorName(i);
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size_t idxFromName = sequence_.selectorIndex(name);
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dbg << " " << name
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<< " " << decisions.decision(i)
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<< " " << decisions.decision(idxFromName)
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<< " " << decisions.complementaryDecision(i)
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<< " " << decisions.complementaryDecision(idxFromName)
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<< " " << decisions.cumulativeDecision(i)
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<< " " << decisions.cumulativeDecision(idxFromName)
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<< std::endl;
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}
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dbg << " global decision = ("<<dec<<") " << decisions.globalDecision();
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std::cout << dbg.str() <<std::endl;
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std::ostringstream dbg1;
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std::vector<double> vars = sequence_.values();
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dbg1 << "All variable values" << std::endl;
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for ( size_t i=0; i<sequence_.variableNames().size(); ++i ) {
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dbg1 << sequence_.variableNames()[i] << " " << vars[i] << std::endl;
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}
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*/
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return dec;
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}
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//________________________________________________________________________________________
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// Called once per job, at start
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void
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Selection::beginJob(const edm::EventSetup&) {}
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//________________________________________________________________________________________
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// Called once per job, at end
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void
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Selection::endJob()
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{
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std::ostringstream dbg;
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dbg << "\nStatistical CutFlow Analysis\n"
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<< "----------------------------\n";
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if (SelectionStats_.size()>0) {
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dbg << "Total events = " << SelectionStats_[0].NTotal
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<< ", average weight = " << SelectionStats_[0].NTotal/Nevents<<"\n";
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}
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dbg << " variable cut (eff) n-1 (eff) cumulative (eff)";
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for ( size_t i=0; i<filterSelectionIndices_.size(); ++i )
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dbg << "\n"
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<< std::setw(20) << sequence_.selectorName(i)
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<< " " <<std::setw(10)<< SelectionStats_[i].NSelected << " (" << std::setw(10) << SelectionStats_[i].Eff()<<")"
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<< " " <<std::setw(10)<< SelectionStats_[i].Nminus1total << " (" <<std::setw(10) << SelectionStats_[i].EffNminus1()<<")"
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<< " " <<std::setw(10)<< SelectionStats_[i].NCumulative << " (" <<std::setw(10) << SelectionStats_[i].EffCumulative()<<")";
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//edm::LogVerbatim("Selection") << dbg.str() << std::endl;
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std::cout << dbg.str() << std::endl;
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}
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//define this as a plug-in
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DEFINE_FWK_MODULE(Selection);
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