TauDiscriminatorTools Namespace Reference

Functions
def	adaptTauDiscriminator
def	adaptTauDiscriminatorSequence
def	recoTauTypeMapper
def	setTauSource
def	subParameterSets

Variables
tuple	leadTrackFinding
tuple	noPrediscriminants
	producerIsTauTypeMapper = lambdatauProducer:tauProducer
tuple	recoTauTypeMapperRegex = re.compile("(\w*)Producer")
tuple	requireLeadPion
tuple	requireLeadTrack

Function Documentation

def TauDiscriminatorTools.adaptTauDiscriminator	(		discriminator,
			newTauProducer = 'shrinkingConePFTauProducer',
			oldTauTypeMapper = recoTauTypeMapper,
			newTauTypeMapper = recoTauTypeMapper,
			preservePFTauProducer = False
	)

Change a TauDiscriminator to use a different tau/prediscriminant sources

Tau discriminators use the following convention: 
     [tauType]DiscriminationByXXX

i.e. fixedConePFTauDiscriminationByIsolation,
allLayer1TausDiscriminationByIsolation, etc

However, the mapping of tauType to tau producer name is not constant.  In
RECO, the form is [tauType]Producer.  In PAT, the producer is just named
[tauType].  To manage this oldTauTypeMapper and newTauTypeMapper are
functions with signature f(str) that translate a TauProducer name (like
shrinkingConePFTauProducer) to its type (shrinkingConePFTau).  Two types of
mapping are provided, 
     * recoTauTypeMapper
           shrinkingConePFTauProducer->shrinkingConePFTau
     * producerIsTauTypeMapper
           allLayer1Taus->allLayer1Taus

Definition at line 44 of file TauDiscriminatorTools.py.

References subParameterSets().

Referenced by adaptTauDiscriminatorSequence(), pfTools.reconfigurePF2PATTaus(), and setTauSource().

      preservePFTauProducer = False):
   ''' Change a TauDiscriminator to use a different tau/prediscriminant sources

   Tau discriminators use the following convention: 
        [tauType]DiscriminationByXXX

   i.e. fixedConePFTauDiscriminationByIsolation,
   allLayer1TausDiscriminationByIsolation, etc

   However, the mapping of tauType to tau producer name is not constant.  In
   RECO, the form is [tauType]Producer.  In PAT, the producer is just named
   [tauType].  To manage this oldTauTypeMapper and newTauTypeMapper are
   functions with signature f(str) that translate a TauProducer name (like
   shrinkingConePFTauProducer) to its type (shrinkingConePFTau).  Two types of
   mapping are provided, 
        * recoTauTypeMapper
              shrinkingConePFTauProducer->shrinkingConePFTau
        * producerIsTauTypeMapper
              allLayer1Taus->allLayer1Taus

   '''

   oldTauProducer = discriminator.PFTauProducer
   if isinstance(newTauProducer, str):
      newTauProducer = cms.InputTag(newTauProducer)

   # This is useful for the PF2PAT case where you wish to set the producer name
   # seperately
   if not preservePFTauProducer: 
      discriminator.PFTauProducer = newTauProducer

   oldTauType = oldTauTypeMapper(oldTauProducer.value())
   newTauType = newTauTypeMapper(newTauProducer.value())

   replacementRegex = re.compile(oldTauType)

   # Adapt all the prediscriminants
   for prediscriminant in subParameterSets(discriminator.Prediscriminants):
      oldProducer = prediscriminant.Producer.value() 
      # Replace the old tau type by the new tau type in the prediscrimant
      # producer
      prediscriminant.Producer = cms.InputTag(replacementRegex.sub(newTauType,
         oldProducer))