Templated helper class to allow a selection on a certain object collection. More...

#include "DQM/Physics/interface/TopDQMHelpers.h"

Public Member Functions
bool	select (const edm::Event &event)
	apply selection More...

bool	select (const edm::Event &event, const edm::EventSetup &setup)
	apply selection override for jets More...

	SelectionStep (const edm::ParameterSet &cfg)
	default constructor More...

	~SelectionStep ()
	default destructor More...

Private Attributes
edm::InputTag	btagLabel_
	choice for b-tag as extra selection type More...

double	btagWorkingPoint_
	choice of b-tag working point as extra selection type More...

int	eidPattern_

edm::InputTag	electronId_
	electronId label as extra selection type More...

std::string	jetCorrector_
	jet corrector as extra selection type More...

edm::InputTag	jetIDLabel_
	jetID as an extra selection type More...

StringCutObjectSelector < reco::JetID > *	jetIDSelect_
	selection string on the jetID More...

int	max_

int	min_
	min/max for object multiplicity More...

StringCutObjectSelector< Object >	select_
	string cut selector More...

edm::InputTag	src_
	input collection More...

Detailed Description

template<typename Object>
class SelectionStep< Object >

Templated helper class to allow a selection on a certain object collection.

Templated helper class to allow a selection on a certain object collection, which may be monitored by a separate class afterwards. The class wraps and slightly extends the features of the StringCutParser to allow also to apply event based selections, according to a minimal or maximal number of elements in the collection after the object selection has been applied. It takes an edm::ParameterSet in the constructor, which should contain the following elements:

src : the input collection (mandatory).
select : the selection string (mandatory).
min : whether there is a min value on which to reject the whole event after the selection (optional).
max : whether there is a max value on which to reject the whole event after the selection (optional).
electronId : input tag of an electronId association map and selection pattern (optional).
jetCorrector : label of jet corrector (optional).
jetBTagger : parameters defining the btag algorithm and working point of choice (optional).
jetID : parameters defining the jetID value map and selection (optional).

The parameters src and select are mandatory. The parameters min and max are optional. The parameters electronId and jetCorrector are optional. They are added to keep the possibility to apply selections on id'ed electrons or on corrected jets. They may be omitted in the PSet for simplification reasons if not needed at any time. They are not effiective for other object collections but electrons or jets. If none of the two parameters min or max is found in the event the select function returns true if at least one object fullfilled the requirements.

The class has one template value, which is the object collection to apply the selection on. This has to be parsed to the StringCutParser class. The function select is overrided for jets to circumvent problems with the template specialisation. Note that for MET not type1 or muon corrections are supported on reco candidates.

Definition at line 148 of file TopDQMHelpers.h.

Constructor & Destructor Documentation

template<typename Object >

SelectionStep< Object >::SelectionStep ( const edm::ParameterSet & cfg )

default constructor

Definition at line 195 of file TopDQMHelpers.h.

References SelectionStep< Object >::btagLabel_, SelectionStep< Object >::btagWorkingPoint_, SelectionStep< Object >::eidPattern_, SelectionStep< Object >::electronId_, edm::ParameterSet::exists(), edm::ParameterSet::existsAs(), edm::ParameterSet::getParameter(), SelectionStep< Object >::jetCorrector_, SelectionStep< Object >::jetIDLabel_, SelectionStep< Object >::jetIDSelect_, SelectionStep< Object >::max_, and SelectionStep< Object >::min_.

                                                                :
   src_( cfg.getParameter<edm::InputTag>( "src"   )),
   select_( cfg.getParameter<std::string>("select")),
   jetIDSelect_(0)
 {
   // construct min/max if the corresponding params
   // exist otherwise they are initialized with -1
   cfg.exists("min") ? min_= cfg.getParameter<int>("min") : min_= -1;
   cfg.exists("max") ? max_= cfg.getParameter<int>("max") : max_= -1;
   // read electron extras if they exist
   if(cfg.existsAs<edm::ParameterSet>("electronId")){ 
     edm::ParameterSet elecId=cfg.getParameter<edm::ParameterSet>("electronId");
     electronId_= elecId.getParameter<edm::InputTag>("src");
     eidPattern_= elecId.getParameter<int>("pattern");
   }
   // read jet corrector label if it exists
   if(cfg.exists("jetCorrector")){ jetCorrector_= cfg.getParameter<std::string>("jetCorrector"); }
   // read btag information if it exists
   if(cfg.existsAs<edm::ParameterSet>("jetBTagger")){
     edm::ParameterSet jetBTagger=cfg.getParameter<edm::ParameterSet>("jetBTagger");
     btagLabel_=jetBTagger.getParameter<edm::InputTag>("label");
     btagWorkingPoint_=jetBTagger.getParameter<double>("workingPoint");
   }
   // read jetID information if it exists
   if(cfg.existsAs<edm::ParameterSet>("jetID")){
     edm::ParameterSet jetID=cfg.getParameter<edm::ParameterSet>("jetID");
     jetIDLabel_ =jetID.getParameter<edm::InputTag>("label");
     jetIDSelect_= new StringCutObjectSelector<reco::JetID>(jetID.getParameter<std::string>("select"));
   }
 }

template<typename Object>

SelectionStep< Object >::~SelectionStep ( )

inline

default destructor

Definition at line 153 of file TopDQMHelpers.h.

153 {};

Member Function Documentation

template<typename Object >

bool SelectionStep< Object >::select ( const edm::Event & event )

apply selection

Definition at line 228 of file TopDQMHelpers.h.

References accept(), edm::Event::getByLabel(), n, VarParsing::obj, and align_tpl::src.

Referenced by TopSingleLeptonDQM::analyze(), TopDiLeptonOfflineDQM::analyze(), python.Vispa.Views.LineDecayView.LineDecayContainer::createObject(), python.Vispa.Plugins.Browser.BrowserTabController.BrowserTabController::find(), python.Vispa.Views.LineDecayView.LineDecayContainer::mousePressEvent(), python.Vispa.Gui.PortConnection.PointToPointConnection::mousePressEvent(), python.Vispa.Gui.VispaWidget.VispaWidget::mousePressEvent(), and python.Vispa.Views.AbstractView.AbstractView::restoreSelection().

 {
   // fetch input collection
   edm::Handle<edm::View<Object> > src; 
   if( !event.getByLabel(src_, src) ) return false;
 
   // load electronId value map if configured such
   edm::Handle<edm::ValueMap<float> > electronId;
   if(!electronId_.label().empty()) {
     if( !event.getByLabel(electronId_, electronId) ) return false;
   }
 
   // determine multiplicity of selected objects
   int n=0;
   for(typename edm::View<Object>::const_iterator obj=src->begin(); obj!=src->end(); ++obj){
     // special treatment for electrons
     if(dynamic_cast<const reco::GsfElectron*>(&*obj)){
       unsigned int idx = obj-src->begin();
       if( electronId_.label().empty() ? true : ((int)(*electronId)[src->refAt(idx)] & eidPattern_) ){   
     if(select_(*obj))++n;
       }
     }
     // normal treatment
     else{
       if(select_(*obj))++n;
     }
   }
   bool accept=(min_>=0 ? n>=min_:true) && (max_>=0 ? n<=max_:true);
   return (min_<0 && max_<0) ? (n>0):accept;
 }

template<typename Object >

bool SelectionStep< Object >::select	(	const edm::Event &	event,
		const edm::EventSetup &	setup
	)

apply selection override for jets

apply selection (w/o using the template class Object), override for jets

Definition at line 261 of file TopDQMHelpers.h.

References accept(), JetCorrector::correction(), edm::EventSetup::find(), edm::Event::getByLabel(), JetCorrector::getJetCorrector(), metsig::jet, n, VarParsing::obj, and align_tpl::src.

Referenced by python.Vispa.Views.LineDecayView.LineDecayContainer::createObject(), python.Vispa.Plugins.Browser.BrowserTabController.BrowserTabController::find(), python.Vispa.Views.LineDecayView.LineDecayContainer::mousePressEvent(), python.Vispa.Gui.PortConnection.PointToPointConnection::mousePressEvent(), python.Vispa.Gui.VispaWidget.VispaWidget::mousePressEvent(), and python.Vispa.Views.AbstractView.AbstractView::restoreSelection().

 {
   // fetch input collection
   edm::Handle<edm::View<Object> > src; 
   if( !event.getByLabel(src_, src) ) return false;
 
   // load btag collection if configured such
   // NOTE that the JetTagCollection needs an
   // edm::View to reco::Jets; we have to add
   // another Handle bjets for this purpose
   edm::Handle<edm::View<reco::Jet> > bjets; 
   edm::Handle<reco::JetTagCollection> btagger;
   if(!btagLabel_.label().empty()){ 
     if( !event.getByLabel(src_, bjets) ) return false;
     if( !event.getByLabel(btagLabel_, btagger) ) return false;
   }
   
   // load jetID value map if configured such 
   edm::Handle<reco::JetIDValueMap> jetID;
   if(jetIDSelect_){
     if( !event.getByLabel(jetIDLabel_, jetID) ) return false;
   }
 
   // load jet corrector if configured such
   const JetCorrector* corrector=0;
   if(!jetCorrector_.empty()){
     // check whether a jet correcto is in the event setup or not
     if(setup.find( edm::eventsetup::EventSetupRecordKey::makeKey<JetCorrectionsRecord>() )){
       corrector = JetCorrector::getJetCorrector(jetCorrector_, setup);
     }
     else{
       edm::LogVerbatim( "TopDQMHelpers" ) 
         << "\n"
         << "------------------------------------------------------------------------------------- \n"
         << " No JetCorrectionsRecord available from EventSetup:                                   \n" 
         << "  - Jets will not be corrected.                                                       \n"
         << "  - If you want to change this add the following lines to your cfg file               \n"
         << "                                                                                      \n"
         << "  ## load jet corrections                                                             \n"
         << "  process.load(\"JetMETCorrections.Configuration.JetCorrectionServicesAllAlgos_cff\") \n"
         << "  process.prefer(\"ak5CaloL2L3\")                                                     \n"
         << "                                                                                      \n"
         << "------------------------------------------------------------------------------------- \n";
     }
   }
   // determine multiplicity of selected objects
   int n=0;
   for(typename edm::View<Object>::const_iterator obj=src->begin(); obj!=src->end(); ++obj){
     // check for chosen btag discriminator to be above the 
     // corresponding working point if configured such 
     unsigned int idx = obj-src->begin();
     if( btagLabel_.label().empty() ? true : (*btagger)[bjets->refAt(idx)]>btagWorkingPoint_ ){   
       bool passedJetID=true;
       // check jetID for calo jets
       if( jetIDSelect_ && dynamic_cast<const reco::CaloJet*>(src->refAt(idx).get())){
     passedJetID=(*jetIDSelect_)((*jetID)[src->refAt(idx)]);
       }
       if(passedJetID){
     // scale jet energy if configured such
     Object jet=*obj; jet.scaleEnergy(corrector ? corrector->correction(*obj) : 1.);
     if(select_(jet))++n;
       }
     }
   }
   bool accept=(min_>=0 ? n>=min_:true) && (max_>=0 ? n<=max_:true);
   return (min_<0 && max_<0) ? (n>0):accept;
 }

Member Data Documentation

template<typename Object>

edm::InputTag SelectionStep< Object >::btagLabel_

private

choice for b-tag as extra selection type

Definition at line 181 of file TopDQMHelpers.h.

Referenced by SelectionStep< Object >::SelectionStep().

template<typename Object>

double SelectionStep< Object >::btagWorkingPoint_

private

choice of b-tag working point as extra selection type

Definition at line 183 of file TopDQMHelpers.h.

Referenced by SelectionStep< Object >::SelectionStep().

template<typename Object>

int SelectionStep< Object >::eidPattern_

private

electronId pattern we expect the following pattern: 0: fails 1: passes electron ID only 2: passes electron Isolation only 3: passes electron ID and Isolation only 4: passes conversion rejection 5: passes conversion rejection and ID 6: passes conversion rejection and Isolation 7: passes the whole selection As described on https://twiki.cern.ch/twiki/bin/view/CMS/SimpleCutBasedEleID

Definition at line 177 of file TopDQMHelpers.h.

Referenced by SelectionStep< Object >::SelectionStep().

template<typename Object>

edm::InputTag SelectionStep< Object >::electronId_

private

electronId label as extra selection type

Definition at line 166 of file TopDQMHelpers.h.

Referenced by SelectionStep< Object >::SelectionStep().

template<typename Object>

std::string SelectionStep< Object >::jetCorrector_

private

jet corrector as extra selection type