ROOT 6.07/09 Reference Guide |
Definition at line 64 of file MethodBDT.h.
Public Member Functions | |
MethodBDT (const TString &jobName, const TString &methodTitle, DataSetInfo &theData, const TString &theOption="") | |
the standard constructor for the "boosted decision trees" More... | |
MethodBDT (DataSetInfo &theData, const TString &theWeightFile) | |
virtual | ~MethodBDT (void) |
destructor Note: fEventSample and ValidationSample are already deleted at the end of TRAIN When they are not used anymore for (UInt_t i=0; i<fEventSample.size(); i++) delete fEventSample[i]; for (UInt_t i=0; i<fValidationSample.size(); i++) delete fValidationSample[i]; More... | |
void | AddWeightsXMLTo (void *parent) const |
write weights to XML More... | |
Double_t | Boost (std::vector< const TMVA::Event * > &, DecisionTree *dt, UInt_t cls=0) |
apply the boosting alogrithim (the algorithm is selecte via the the "option" given in the constructor. More... | |
const Ranking * | CreateRanking () |
Compute ranking of input variables. More... | |
void | DeclareOptions () |
define the options (their key words) that can be set in the option string know options: nTrees number of trees in the forest to be created BoostType the boosting type for the trees in the forest (AdaBoost e.t.c..) known: AdaBoost AdaBoostR2 (Adaboost for regression) Bagging GradBoost AdaBoostBeta the boosting parameter, beta, for AdaBoost UseRandomisedTrees choose at each node splitting a random set of variables UseNvars use UseNvars variables in randomised trees UsePoission Nvars use UseNvars not as fixed number but as mean of a possion distribution SeparationType the separation criterion applied in the node splitting known: GiniIndex MisClassificationError CrossEntropy SDivSqrtSPlusB MinNodeSize: minimum percentage of training events in a leaf node (leaf criteria, stop splitting) nCuts: the number of steps in the optimisation of the cut for a node (if < 0, then step size is determined by the events) UseFisherCuts: use multivariate splits using the Fisher criterion UseYesNoLeaf decide if the classification is done simply by the node type, or the S/B (from the training) in the leaf node NodePurityLimit the minimum purity to classify a node as a signal node (used in pruning and boosting to determine misclassification error rate) PruneMethod The Pruning method: known: NoPruning // switch off pruning completely ExpectedError CostComplexity PruneStrength a parameter to adjust the amount of pruning. More... | |
const std::vector< double > & | GetBoostWeights () const |
const std::vector< TMVA::DecisionTree * > & | GetForest () const |
void | GetHelpMessage () const |
Get help message text. More... | |
const std::vector< Float_t > & | GetMulticlassValues () |
get the multiclass MVA response for the BDT classifier More... | |
Double_t | GetMvaValue (Double_t *err=0, Double_t *errUpper=0) |
UInt_t | GetNTrees () const |
const std::vector< Float_t > & | GetRegressionValues () |
get the regression value generated by the BDTs More... | |
const std::vector< const TMVA::Event * > & | GetTrainingEvents () const |
std::vector< Double_t > | GetVariableImportance () |
Return the relative variable importance, normalized to all variables together having the importance 1. More... | |
Double_t | GetVariableImportance (UInt_t ivar) |
Returns the measure for the variable importance of variable "ivar" which is later used in GetVariableImportance() to calculate the relative variable importances. More... | |
virtual Bool_t | HasAnalysisType (Types::EAnalysisType type, UInt_t numberClasses, UInt_t numberTargets) |
BDT can handle classification with multiple classes and regression with one regression-target. More... | |
void | InitEventSample () |
initialize the event sample (i.e. reset the boost-weights... etc) More... | |
void | MakeClassInstantiateNode (DecisionTreeNode *n, std::ostream &fout, const TString &className) const |
recursively descends a tree and writes the node instance to the output streem More... | |
void | MakeClassSpecific (std::ostream &, const TString &) const |
make ROOT-independent C++ class for classifier response (classifier-specific implementation) More... | |
void | MakeClassSpecificHeader (std::ostream &, const TString &) const |
specific class header More... | |
virtual std::map< TString, Double_t > | OptimizeTuningParameters (TString fomType="ROCIntegral", TString fitType="FitGA") |
call the Optimzier with the set of paremeters and ranges that are meant to be tuned. More... | |
void | ProcessOptions () |
the option string is decoded, for available options see "DeclareOptions" More... | |
void | ReadWeightsFromStream (std::istream &istr) |
read the weights (BDT coefficients) More... | |
void | ReadWeightsFromXML (void *parent) |
reads the BDT from the xml file More... | |
void | Reset (void) |
reset the method, as if it had just been instantiated (forget all training etc.) More... | |
void | SetAdaBoostBeta (Double_t b) |
void | SetBaggedSampleFraction (Double_t f) |
void | SetMaxDepth (Int_t d) |
void | SetMinNodeSize (Double_t sizeInPercent) |
void | SetMinNodeSize (TString sizeInPercent) |
void | SetNodePurityLimit (Double_t l) |
void | SetNTrees (Int_t d) |
void | SetShrinkage (Double_t s) |
virtual void | SetTuneParameters (std::map< TString, Double_t > tuneParameters) |
set the tuning parameters accoding to the argument More... | |
void | SetUseNvars (Int_t n) |
Double_t | TestTreeQuality (DecisionTree *dt) |
test the tree quality.. in terms of Miscalssification More... | |
void | Train (void) |
BDT training. More... | |
void | WriteMonitoringHistosToFile (void) const |
Here we could write some histograms created during the processing to the output file. More... | |
Public Member Functions inherited from TMVA::MethodBase | |
MethodBase (const TString &jobName, Types::EMVA methodType, const TString &methodTitle, DataSetInfo &dsi, const TString &theOption="") | |
standard constructur More... | |
MethodBase (Types::EMVA methodType, DataSetInfo &dsi, const TString &weightFile) | |
constructor used for Testing + Application of the MVA, only (no training), using given WeightFiles More... | |
virtual | ~MethodBase () |
destructor More... | |
void | AddOutput (Types::ETreeType type, Types::EAnalysisType analysisType) |
TDirectory * | BaseDir () const |
returns the ROOT directory where info/histograms etc of the corresponding MVA method instance are stored More... | |
virtual void | CheckSetup () |
check may be overridden by derived class (sometimes, eg, fitters are used which can only be implemented during training phase) More... | |
DataSet * | Data () const |
DataSetInfo & | DataInfo () const |
void | DisableWriting (Bool_t setter) |
Bool_t | DoMulticlass () const |
Bool_t | DoRegression () const |
void | ExitFromTraining () |
Types::EAnalysisType | GetAnalysisType () const |
UInt_t | GetCurrentIter () |
virtual Double_t | GetEfficiency (const TString &, Types::ETreeType, Double_t &err) |
fill background efficiency (resp. More... | |
const Event * | GetEvent () const |
const Event * | GetEvent (const TMVA::Event *ev) const |
const Event * | GetEvent (Long64_t ievt) const |
const Event * | GetEvent (Long64_t ievt, Types::ETreeType type) const |
const std::vector< TMVA::Event * > & | GetEventCollection (Types::ETreeType type) |
returns the event collection (i.e. More... | |
TFile * | GetFile () const |
const TString & | GetInputLabel (Int_t i) const |
const char * | GetInputTitle (Int_t i) const |
const TString & | GetInputVar (Int_t i) const |
TMultiGraph * | GetInteractiveTrainingError () |
const TString & | GetJobName () const |
virtual Double_t | GetKSTrainingVsTest (Char_t SorB, TString opt="X") |
virtual Double_t | GetMaximumSignificance (Double_t SignalEvents, Double_t BackgroundEvents, Double_t &optimal_significance_value) const |
plot significance, S/Sqrt(S^2 + B^2), curve for given number of signal and background events; returns cut for maximum significance also returned via reference is the maximum significance More... | |
UInt_t | GetMaxIter () |
Double_t | GetMean (Int_t ivar) const |
const TString & | GetMethodName () const |
Types::EMVA | GetMethodType () const |
TString | GetMethodTypeName () const |
virtual std::vector< Float_t > | GetMulticlassEfficiency (std::vector< std::vector< Float_t > > &purity) |
virtual std::vector< Float_t > | GetMulticlassTrainingEfficiency (std::vector< std::vector< Float_t > > &purity) |
Double_t | GetMvaValue (const TMVA::Event *const ev, Double_t *err=0, Double_t *errUpper=0) |
const char * | GetName () const |
UInt_t | GetNEvents () const |
temporary event when testing on a different DataSet than the own one More... | |
UInt_t | GetNTargets () const |
UInt_t | GetNvar () const |
UInt_t | GetNVariables () const |
virtual Double_t | GetProba (const Event *ev) |
virtual Double_t | GetProba (Double_t mvaVal, Double_t ap_sig) |
compute likelihood ratio More... | |
const TString | GetProbaName () const |
virtual Double_t | GetRarity (Double_t mvaVal, Types::ESBType reftype=Types::kBackground) const |
compute rarity: R(x) = Integrate_[-oo..x] { PDF(x') dx' } where PDF(x) is the PDF of the classifier's signal or background distribution More... | |
virtual void | GetRegressionDeviation (UInt_t tgtNum, Types::ETreeType type, Double_t &stddev, Double_t &stddev90Percent) const |
const std::vector< Float_t > & | GetRegressionValues (const TMVA::Event *const ev) |
Double_t | GetRMS (Int_t ivar) const |
virtual Double_t | GetROCIntegral (TH1D *histS, TH1D *histB) const |
calculate the area (integral) under the ROC curve as a overall quality measure of the classification More... | |
virtual Double_t | GetROCIntegral (PDF *pdfS=0, PDF *pdfB=0) const |
calculate the area (integral) under the ROC curve as a overall quality measure of the classification More... | |
virtual Double_t | GetSeparation (TH1 *, TH1 *) const |
compute "separation" defined as <s2> = (1/2) Int_-oo..+oo { (S(x) - B(x))^2/(S(x) + B(x)) dx } More... | |
virtual Double_t | GetSeparation (PDF *pdfS=0, PDF *pdfB=0) const |
compute "separation" defined as <s2> = (1/2) Int_-oo..+oo { (S(x) - B(x))^2/(S(x) + B(x)) dx } More... | |
Double_t | GetSignalReferenceCut () const |
Double_t | GetSignalReferenceCutOrientation () const |
virtual Double_t | GetSignificance () const |
compute significance of mean difference significance = |<S> - |/Sqrt(RMS_S2 + RMS_B2) More... | |
const Event * | GetTestingEvent (Long64_t ievt) const |
Double_t | GetTestTime () const |
const TString & | GetTestvarName () const |
virtual Double_t | GetTrainingEfficiency (const TString &) |
const Event * | GetTrainingEvent (Long64_t ievt) const |
UInt_t | GetTrainingROOTVersionCode () const |
TString | GetTrainingROOTVersionString () const |
calculates the ROOT version string from the training version code on the fly More... | |
UInt_t | GetTrainingTMVAVersionCode () const |
TString | GetTrainingTMVAVersionString () const |
calculates the TMVA version string from the training version code on the fly More... | |
Double_t | GetTrainTime () const |
TransformationHandler & | GetTransformationHandler (Bool_t takeReroutedIfAvailable=true) |
const TransformationHandler & | GetTransformationHandler (Bool_t takeReroutedIfAvailable=true) const |
TString | GetWeightFileName () const |
retrieve weight file name More... | |
Double_t | GetXmax (Int_t ivar) const |
Double_t | GetXmin (Int_t ivar) const |
Bool_t | HasMVAPdfs () const |
void | InitIPythonInteractive () |
Bool_t | IsModelPersistence () |
virtual Bool_t | IsSignalLike () |
uses a pre-set cut on the MVA output (SetSignalReferenceCut and SetSignalReferenceCutOrientation) for a quick determination if an event would be selected as signal or background More... | |
virtual Bool_t | IsSignalLike (Double_t mvaVal) |
uses a pre-set cut on the MVA output (SetSignalReferenceCut and SetSignalReferenceCutOrientation) for a quick determination if an event with this mva output value would tbe selected as signal or background More... | |
Bool_t | IsSilentFile () |
virtual void | MakeClass (const TString &classFileName=TString("")) const |
create reader class for method (classification only at present) More... | |
TDirectory * | MethodBaseDir () const |
returns the ROOT directory where all instances of the corresponding MVA method are stored More... | |
void | PrintHelpMessage () const |
prints out method-specific help method More... | |
void | ProcessSetup () |
process all options the "CheckForUnusedOptions" is done in an independent call, since it may be overridden by derived class (sometimes, eg, fitters are used which can only be implemented during training phase) More... | |
void | ReadStateFromFile () |
Function to write options and weights to file. More... | |
void | ReadStateFromStream (std::istream &tf) |
read the header from the weight files of the different MVA methods More... | |
void | ReadStateFromStream (TFile &rf) |
write reference MVA distributions (and other information) to a ROOT type weight file More... | |
void | ReadStateFromXMLString (const char *xmlstr) |
for reading from memory More... | |
void | RerouteTransformationHandler (TransformationHandler *fTargetTransformation) |
virtual void | SetAnalysisType (Types::EAnalysisType type) |
void | SetBaseDir (TDirectory *methodDir) |
void | SetFile (TFile *file) |
void | SetMethodBaseDir (TDirectory *methodDir) |
void | SetMethodDir (TDirectory *methodDir) |
void | SetModelPersistence (Bool_t status) |
void | SetSignalReferenceCut (Double_t cut) |
void | SetSignalReferenceCutOrientation (Double_t cutOrientation) |
void | SetSilentFile (Bool_t status) |
void | SetTestTime (Double_t testTime) |
void | SetTestvarName (const TString &v="") |
void | SetTrainTime (Double_t trainTime) |
void | SetupMethod () |
setup of methods More... | |
virtual void | TestClassification () |
initialization More... | |
virtual void | TestMulticlass () |
test multiclass classification More... | |
virtual void | TestRegression (Double_t &bias, Double_t &biasT, Double_t &dev, Double_t &devT, Double_t &rms, Double_t &rmsT, Double_t &mInf, Double_t &mInfT, Double_t &corr, Types::ETreeType type) |
calculate <sum-of-deviation-squared> of regression output versus "true" value from test sample More... | |
bool | TrainingEnded () |
void | TrainMethod () |
virtual void | WriteEvaluationHistosToFile (Types::ETreeType treetype) |
writes all MVA evaluation histograms to file More... | |
void | WriteStateToFile () const |
write options and weights to file note that each one text file for the main configuration information and one ROOT file for ROOT objects are created More... | |
Public Member Functions inherited from TMVA::IMethod | |
IMethod () | |
virtual | ~IMethod () |
Public Member Functions inherited from TMVA::Configurable | |
Configurable (const TString &theOption="") | |
constructor More... | |
virtual | ~Configurable () |
default destructur More... | |
void | AddOptionsXMLTo (void *parent) const |
write options to XML file More... | |
template<class T > | |
void | AddPreDefVal (const T &) |
template<class T > | |
void | AddPreDefVal (const TString &optname, const T &) |
void | CheckForUnusedOptions () const |
checks for unused options in option string More... | |
template<class T > | |
OptionBase * | DeclareOptionRef (T &ref, const TString &name, const TString &desc="") |
template<class T > | |
OptionBase * | DeclareOptionRef (T *&ref, Int_t size, const TString &name, const TString &desc="") |
template<class T > | |
TMVA::OptionBase * | DeclareOptionRef (T &ref, const TString &name, const TString &desc) |
template<class T > | |
TMVA::OptionBase * | DeclareOptionRef (T *&ref, Int_t size, const TString &name, const TString &desc) |
const char * | GetConfigDescription () const |
const char * | GetConfigName () const |
const TString & | GetOptions () const |
MsgLogger & | Log () const |
virtual void | ParseOptions () |
options parser More... | |
void | PrintOptions () const |
prints out the options set in the options string and the defaults More... | |
void | ReadOptionsFromStream (std::istream &istr) |
read option back from the weight file More... | |
void | ReadOptionsFromXML (void *node) |
void | SetConfigDescription (const char *d) |
void | SetConfigName (const char *n) |
void | SetMsgType (EMsgType t) |
void | SetOptions (const TString &s) |
void | WriteOptionsToStream (std::ostream &o, const TString &prefix) const |
write options to output stream (e.g. in writing the MVA weight files More... | |
Public Member Functions inherited from TNamed | |
TNamed () | |
TNamed (const char *name, const char *title) | |
TNamed (const TString &name, const TString &title) | |
TNamed (const TNamed &named) | |
TNamed copy ctor. More... | |
virtual | ~TNamed () |
virtual void | Clear (Option_t *option="") |
Set name and title to empty strings (""). More... | |
virtual TObject * | Clone (const char *newname="") const |
Make a clone of an object using the Streamer facility. More... | |
virtual Int_t | Compare (const TObject *obj) const |
Compare two TNamed objects. More... | |
virtual void | Copy (TObject &named) const |
Copy this to obj. More... | |
virtual void | FillBuffer (char *&buffer) |
Encode TNamed into output buffer. More... | |
virtual const char * | GetTitle () const |
Returns title of object. More... | |
virtual ULong_t | Hash () const |
Return hash value for this object. More... | |
virtual Bool_t | IsSortable () const |
virtual void | ls (Option_t *option="") const |
List TNamed name and title. More... | |
TNamed & | operator= (const TNamed &rhs) |
TNamed assignment operator. More... | |
virtual void | Print (Option_t *option="") const |
Print TNamed name and title. More... | |
virtual void | SetName (const char *name) |
Set the name of the TNamed. More... | |
virtual void | SetNameTitle (const char *name, const char *title) |
Set all the TNamed parameters (name and title). More... | |
virtual void | SetTitle (const char *title="") |
Set the title of the TNamed. More... | |
virtual Int_t | Sizeof () const |
Return size of the TNamed part of the TObject. More... | |
Public Member Functions inherited from TObject | |
TObject () | |
TObject constructor. More... | |
TObject (const TObject &object) | |
TObject copy ctor. More... | |
virtual | ~TObject () |
TObject destructor. More... | |
void | AbstractMethod (const char *method) const |
Use this method to implement an "abstract" method that you don't want to leave purely abstract. More... | |
virtual void | AppendPad (Option_t *option="") |
Append graphics object to current pad. More... | |
virtual void | Browse (TBrowser *b) |
Browse object. May be overridden for another default action. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Delete (Option_t *option="") |
Delete this object. More... | |
virtual Int_t | DistancetoPrimitive (Int_t px, Int_t py) |
Computes distance from point (px,py) to the object. More... | |
virtual void | Draw (Option_t *option="") |
Default Draw method for all objects. More... | |
virtual void | DrawClass () const |
Draw class inheritance tree of the class to which this object belongs. More... | |
virtual TObject * | DrawClone (Option_t *option="") const |
Draw a clone of this object in the current pad. More... | |
virtual void | Dump () const |
Dump contents of object on stdout. More... | |
virtual void | Error (const char *method, const char *msgfmt,...) const |
Issue error message. More... | |
virtual void | Execute (const char *method, const char *params, Int_t *error=0) |
Execute method on this object with the given parameter string, e.g. More... | |
virtual void | Execute (TMethod *method, TObjArray *params, Int_t *error=0) |
Execute method on this object with parameters stored in the TObjArray. More... | |
virtual void | ExecuteEvent (Int_t event, Int_t px, Int_t py) |
Execute action corresponding to an event at (px,py). More... | |
virtual void | Fatal (const char *method, const char *msgfmt,...) const |
Issue fatal error message. More... | |
virtual TObject * | FindObject (const char *name) const |
Must be redefined in derived classes. More... | |
virtual TObject * | FindObject (const TObject *obj) const |
Must be redefined in derived classes. More... | |
virtual Option_t * | GetDrawOption () const |
Get option used by the graphics system to draw this object. More... | |
virtual const char * | GetIconName () const |
Returns mime type name of object. More... | |
virtual char * | GetObjectInfo (Int_t px, Int_t py) const |
Returns string containing info about the object at position (px,py). More... | |
virtual Option_t * | GetOption () const |
virtual UInt_t | GetUniqueID () const |
Return the unique object id. More... | |
virtual Bool_t | HandleTimer (TTimer *timer) |
Execute action in response of a timer timing out. More... | |
virtual void | Info (const char *method, const char *msgfmt,...) const |
Issue info message. More... | |
virtual Bool_t | InheritsFrom (const char *classname) const |
Returns kTRUE if object inherits from class "classname". More... | |
virtual Bool_t | InheritsFrom (const TClass *cl) const |
Returns kTRUE if object inherits from TClass cl. More... | |
virtual void | Inspect () const |
Dump contents of this object in a graphics canvas. More... | |
void | InvertBit (UInt_t f) |
virtual Bool_t | IsEqual (const TObject *obj) const |
Default equal comparison (objects are equal if they have the same address in memory). More... | |
virtual Bool_t | IsFolder () const |
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More... | |
Bool_t | IsOnHeap () const |
Bool_t | IsZombie () const |
void | MayNotUse (const char *method) const |
Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More... | |
virtual Bool_t | Notify () |
This method must be overridden to handle object notification. More... | |
void | Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const |
Use this method to declare a method obsolete. More... | |
void | operator delete (void *ptr) |
Operator delete. More... | |
void | operator delete[] (void *ptr) |
Operator delete []. More... | |
void * | operator new (size_t sz) |
void * | operator new (size_t sz, void *vp) |
void * | operator new[] (size_t sz) |
void * | operator new[] (size_t sz, void *vp) |
TObject & | operator= (const TObject &rhs) |
TObject assignment operator. More... | |
virtual void | Paint (Option_t *option="") |
This method must be overridden if a class wants to paint itself. More... | |
virtual void | Pop () |
Pop on object drawn in a pad to the top of the display list. More... | |
virtual Int_t | Read (const char *name) |
Read contents of object with specified name from the current directory. More... | |
virtual void | RecursiveRemove (TObject *obj) |
Recursively remove this object from a list. More... | |
void | ResetBit (UInt_t f) |
virtual void | SaveAs (const char *filename="", Option_t *option="") const |
Save this object in the file specified by filename. More... | |
virtual void | SavePrimitive (std::ostream &out, Option_t *option="") |
Save a primitive as a C++ statement(s) on output stream "out". More... | |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
void | SetBit (UInt_t f) |
virtual void | SetDrawOption (Option_t *option="") |
Set drawing option for object. More... | |
virtual void | SetUniqueID (UInt_t uid) |
Set the unique object id. More... | |
virtual void | SysError (const char *method, const char *msgfmt,...) const |
Issue system error message. More... | |
Bool_t | TestBit (UInt_t f) const |
Int_t | TestBits (UInt_t f) const |
virtual void | UseCurrentStyle () |
Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More... | |
virtual void | Warning (const char *method, const char *msgfmt,...) const |
Issue warning message. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) |
Write this object to the current directory. More... | |
virtual Int_t | Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const |
Write this object to the current directory. More... | |
Protected Member Functions | |
void | DeclareCompatibilityOptions () |
options that are used ONLY for the READER to ensure backward compatibility More... | |
Protected Member Functions inherited from TMVA::MethodBase | |
const TString & | GetInternalVarName (Int_t ivar) const |
virtual std::vector< Double_t > | GetMvaValues (Long64_t firstEvt=0, Long64_t lastEvt=-1, Bool_t logProgress=false) |
get all the MVA values for the events of the current Data type More... | |
const TString & | GetOriginalVarName (Int_t ivar) const |
const TString & | GetWeightFileDir () const |
Bool_t | HasTrainingTree () const |
Bool_t | Help () const |
Bool_t | IgnoreEventsWithNegWeightsInTraining () const |
Bool_t | IsConstructedFromWeightFile () const |
Bool_t | IsNormalised () const |
void | NoErrorCalc (Double_t *const err, Double_t *const errUpper) |
virtual void | ReadWeightsFromStream (TFile &) |
void | SetNormalised (Bool_t norm) |
void | SetWeightFileDir (TString fileDir) |
set directory of weight file More... | |
void | SetWeightFileName (TString) |
set the weight file name (depreciated) More... | |
void | Statistics (Types::ETreeType treeType, const TString &theVarName, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &, Double_t &) |
calculates rms,mean, xmin, xmax of the event variable this can be either done for the variables as they are or for normalised variables (in the range of 0-1) if "norm" is set to kTRUE More... | |
Bool_t | TxtWeightsOnly () const |
Bool_t | Verbose () const |
Protected Member Functions inherited from TMVA::Configurable | |
void | EnableLooseOptions (Bool_t b=kTRUE) |
const TString & | GetReferenceFile () const |
Bool_t | LooseOptionCheckingEnabled () const |
void | ResetSetFlag () |
resets the IsSet falg for all declare options to be called before options are read from stream More... | |
void | WriteOptionsReferenceToFile () |
write complete options to output stream More... | |
Protected Member Functions inherited from TObject | |
virtual void | DoError (int level, const char *location, const char *fmt, va_list va) const |
Interface to ErrorHandler (protected). More... | |
void | MakeZombie () |
Private Member Functions | |
Double_t | AdaBoost (std::vector< const TMVA::Event * > &, DecisionTree *dt) |
the AdaBoost implementation. More... | |
Double_t | AdaBoostR2 (std::vector< const TMVA::Event * > &, DecisionTree *dt) |
adaption of the AdaBoost to regression problems (see H.Drucker 1997) More... | |
Double_t | AdaCost (std::vector< const TMVA::Event * > &, DecisionTree *dt) |
the AdaCost boosting algorithm takes a simple cost Matrix (currently fixed for all events... More... | |
Double_t | ApplyPreselectionCuts (const Event *ev) |
aply the preselection cuts before even bothing about any Decision Trees in the GetMVA . More... | |
Double_t | Bagging () |
call it boot-strapping, re-sampling or whatever you like, in the end it is nothing else but applying "random" poisson weights to each event. More... | |
void | BoostMonitor (Int_t iTree) |
fills the ROCIntegral vs Itree from the testSample for the monitoring plots during the training . More... | |
void | DeterminePreselectionCuts (const std::vector< const TMVA::Event * > &eventSample) |
find useful preselection cuts that will be applied before and Decision Tree training. More... | |
void | GetBaggedSubSample (std::vector< const TMVA::Event * > &) |
fills fEventSample with fBaggedSampleFraction*NEvents random training events More... | |
Double_t | GetGradBoostMVA (const TMVA::Event *e, UInt_t nTrees) |
returns MVA value: -1 for background, 1 for signal More... | |
Double_t | GetMvaValue (Double_t *err, Double_t *errUpper, UInt_t useNTrees) |
Return the MVA value (range [-1;1]) that classifies the event according to the majority vote from the total number of decision trees. More... | |
Double_t | GradBoost (std::vector< const TMVA::Event * > &, DecisionTree *dt, UInt_t cls=0) |
Calculate the desired response value for each region. More... | |
Double_t | GradBoostRegression (std::vector< const TMVA::Event * > &, DecisionTree *dt) |
Implementation of M_TreeBoost using any loss function as desribed by Friedman 1999. More... | |
void | Init (void) |
common initialisation with defaults for the BDT-Method More... | |
void | InitGradBoost (std::vector< const TMVA::Event * > &) |
initialize targets for first tree More... | |
void | PreProcessNegativeEventWeights () |
o.k. More... | |
Double_t | PrivateGetMvaValue (const TMVA::Event *ev, Double_t *err=0, Double_t *errUpper=0, UInt_t useNTrees=0) |
Return the MVA value (range [-1;1]) that classifies the event according to the majority vote from the total number of decision trees. More... | |
Double_t | RegBoost (std::vector< const TMVA::Event * > &, DecisionTree *dt) |
a special boosting only for Regression ... More... | |
void | UpdateTargets (std::vector< const TMVA::Event * > &, UInt_t cls=0) |
Calculate residua for all events;. More... | |
void | UpdateTargetsRegression (std::vector< const TMVA::Event * > &, Bool_t first=kFALSE) |
Calculate current residuals for all events and update targets for next iteration. More... | |
Static Private Attributes | |
static const Int_t | fgDebugLevel = 0 |
Additional Inherited Members | |
Public Types inherited from TMVA::MethodBase | |
enum | EWeightFileType { kROOT =0, kTEXT } |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) } |
enum | EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) } |
Static Public Member Functions inherited from TObject | |
static Long_t | GetDtorOnly () |
Return destructor only flag. More... | |
static Bool_t | GetObjectStat () |
Get status of object stat flag. More... | |
static void | SetDtorOnly (void *obj) |
Set destructor only flag. More... | |
static void | SetObjectStat (Bool_t stat) |
Turn on/off tracking of objects in the TObjectTable. More... | |
Public Attributes inherited from TMVA::MethodBase | |
Bool_t | fSetupCompleted |
const Event * | fTmpEvent |
Protected Attributes inherited from TMVA::MethodBase | |
Types::EAnalysisType | fAnalysisType |
UInt_t | fBackgroundClass |
bool | fExitFromTraining = false |
std::vector< TString > * | fInputVars |
IPythonInteractive * | fInteractive = nullptr |
UInt_t | fIPyCurrentIter = 0 |
UInt_t | fIPyMaxIter = 0 |
std::vector< Float_t > * | fMulticlassReturnVal |
Int_t | fNbins |
Int_t | fNbinsH |
Int_t | fNbinsMVAoutput |
Ranking * | fRanking |
std::vector< Float_t > * | fRegressionReturnVal |
Results * | fResults |
UInt_t | fSignalClass |
Protected Attributes inherited from TMVA::Configurable | |
MsgLogger * | fLogger |
Protected Attributes inherited from TNamed | |
TString | fName |
TString | fTitle |
#include <TMVA/MethodBDT.h>
TMVA::MethodBDT::MethodBDT | ( | const TString & | jobName, |
const TString & | methodTitle, | ||
DataSetInfo & | theData, | ||
const TString & | theOption = "" |
||
) |
the standard constructor for the "boosted decision trees"
Definition at line 160 of file MethodBDT.cxx.
TMVA::MethodBDT::MethodBDT | ( | DataSetInfo & | theData, |
const TString & | theWeightFile | ||
) |
Definition at line 216 of file MethodBDT.cxx.
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destructor Note: fEventSample and ValidationSample are already deleted at the end of TRAIN When they are not used anymore for (UInt_t i=0; i<fEventSample.size(); i++) delete fEventSample[i]; for (UInt_t i=0; i<fValidationSample.size(); i++) delete fValidationSample[i];
Definition at line 747 of file MethodBDT.cxx.
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the AdaBoost implementation.
a new training sample is generated by weighting events that are misclassified by the decision tree. The weight applied is w = (1-err)/err or more general: w = ((1-err)/err)^beta where err is the fraction of misclassified events in the tree ( <0.5 assuming demanding the that previous selection was better than random guessing) and "beta" being a free parameter (standard: beta = 1) that modifies the boosting.
Definition at line 1713 of file MethodBDT.cxx.
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adaption of the AdaBoost to regression problems (see H.Drucker 1997)
Definition at line 2066 of file MethodBDT.cxx.
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the AdaCost boosting algorithm takes a simple cost Matrix (currently fixed for all events...
later could be modified to use individual cost matrices for each events as in the original paper...
true_signal true_bkg ---------------------------------- sel_signal | Css Ctb_ss Cxx.. in the range [0,1] sel_bkg | Cts_sb Cbb
and takes this into account when calculating the misclass. cost (former: error fraction):
err = sum_events ( weight* y_true*y_sel * beta(event)
Definition at line 1894 of file MethodBDT.cxx.
aply the preselection cuts before even bothing about any Decision Trees in the GetMVA .
. –> -1 for background +1 for Signal
Definition at line 2953 of file MethodBDT.cxx.
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call it boot-strapping, re-sampling or whatever you like, in the end it is nothing else but applying "random" poisson weights to each event.
Definition at line 2012 of file MethodBDT.cxx.
Double_t TMVA::MethodBDT::Boost | ( | std::vector< const TMVA::Event * > & | eventSample, |
DecisionTree * | dt, | ||
UInt_t | cls = 0 |
||
) |
apply the boosting alogrithim (the algorithm is selecte via the the "option" given in the constructor.
The return value is the boosting weight
Definition at line 1585 of file MethodBDT.cxx.
fills the ROCIntegral vs Itree from the testSample for the monitoring plots during the training .
. but using the testing events
Definition at line 1619 of file MethodBDT.cxx.
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Compute ranking of input variables.
Implements TMVA::MethodBase.
Definition at line 2543 of file MethodBDT.cxx.
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options that are used ONLY for the READER to ensure backward compatibility
Reimplemented from TMVA::MethodBase.
Definition at line 444 of file MethodBDT.cxx.
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define the options (their key words) that can be set in the option string know options: nTrees number of trees in the forest to be created BoostType the boosting type for the trees in the forest (AdaBoost e.t.c..) known: AdaBoost AdaBoostR2 (Adaboost for regression) Bagging GradBoost AdaBoostBeta the boosting parameter, beta, for AdaBoost UseRandomisedTrees choose at each node splitting a random set of variables UseNvars use UseNvars variables in randomised trees UsePoission Nvars use UseNvars not as fixed number but as mean of a possion distribution SeparationType the separation criterion applied in the node splitting known: GiniIndex MisClassificationError CrossEntropy SDivSqrtSPlusB MinNodeSize: minimum percentage of training events in a leaf node (leaf criteria, stop splitting) nCuts: the number of steps in the optimisation of the cut for a node (if < 0, then step size is determined by the events) UseFisherCuts: use multivariate splits using the Fisher criterion UseYesNoLeaf decide if the classification is done simply by the node type, or the S/B (from the training) in the leaf node NodePurityLimit the minimum purity to classify a node as a signal node (used in pruning and boosting to determine misclassification error rate) PruneMethod The Pruning method: known: NoPruning // switch off pruning completely ExpectedError CostComplexity PruneStrength a parameter to adjust the amount of pruning.
Should be large enough such that overtraining is avoided. PruningValFraction number of events to use for optimizing pruning (only if PruneStrength < 0, i.e. automatic pruning) NegWeightTreatment IgnoreNegWeightsInTraining Ignore negative weight events in the training. DecreaseBoostWeight Boost ev. with neg. weight with 1/boostweight instead of boostweight PairNegWeightsGlobal Pair ev. with neg. and pos. weights in traning sample and "annihilate" them MaxDepth maximum depth of the decision tree allowed before further splitting is stopped SkipNormalization Skip normalization at initialization, to keep expectation value of BDT output according to the fraction of events
Implements TMVA::MethodBase.
Definition at line 323 of file MethodBDT.cxx.
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find useful preselection cuts that will be applied before and Decision Tree training.
. (and of course also applied in the GetMVA .. –> -1 for background +1 for Signal /*
Definition at line 2853 of file MethodBDT.cxx.
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fills fEventSample with fBaggedSampleFraction*NEvents random training events
Definition at line 2023 of file MethodBDT.cxx.
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Definition at line 312 of file MethodBDT.h.
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Definition at line 310 of file MethodBDT.h.
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returns MVA value: -1 for background, 1 for signal
Definition at line 1409 of file MethodBDT.cxx.
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Get help message text.
typical length of text line: "|--------------------------------------------------------------|"
Implements TMVA::IMethod.
Definition at line 2563 of file MethodBDT.cxx.
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get the multiclass MVA response for the BDT classifier
Reimplemented from TMVA::MethodBase.
Definition at line 2367 of file MethodBDT.cxx.
Implements TMVA::MethodBase.
Definition at line 2316 of file MethodBDT.cxx.
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Return the MVA value (range [-1;1]) that classifies the event according to the majority vote from the total number of decision trees.
Definition at line 2325 of file MethodBDT.cxx.
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Definition at line 112 of file MethodBDT.h.
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get the regression value generated by the BDTs
Reimplemented from TMVA::MethodBase.
Definition at line 2402 of file MethodBDT.cxx.
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Definition at line 311 of file MethodBDT.h.
vector< Double_t > TMVA::MethodBDT::GetVariableImportance | ( | ) |
Return the relative variable importance, normalized to all variables together having the importance 1.
The importance in evaluated as the total separation-gain that this variable had in the decision trees (weighted by the number of events)
Definition at line 2503 of file MethodBDT.cxx.
Returns the measure for the variable importance of variable "ivar" which is later used in GetVariableImportance() to calculate the relative variable importances.
Definition at line 2531 of file MethodBDT.cxx.
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Calculate the desired response value for each region.
Definition at line 1470 of file MethodBDT.cxx.
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Implementation of M_TreeBoost using any loss function as desribed by Friedman 1999.
Definition at line 1501 of file MethodBDT.cxx.
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BDT can handle classification with multiple classes and regression with one regression-target.
Implements TMVA::IMethod.
Definition at line 275 of file MethodBDT.cxx.
common initialisation with defaults for the BDT-Method
Implements TMVA::MethodBase.
Definition at line 680 of file MethodBDT.cxx.
initialize the event sample (i.e. reset the boost-weights... etc)
Definition at line 755 of file MethodBDT.cxx.
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initialize targets for first tree
Definition at line 1526 of file MethodBDT.cxx.
void TMVA::MethodBDT::MakeClassInstantiateNode | ( | DecisionTreeNode * | n, |
std::ostream & | fout, | ||
const TString & | className | ||
) | const |
recursively descends a tree and writes the node instance to the output streem
Definition at line 2807 of file MethodBDT.cxx.
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make ROOT-independent C++ class for classifier response (classifier-specific implementation)
Reimplemented from TMVA::MethodBase.
Definition at line 2620 of file MethodBDT.cxx.
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specific class header
Reimplemented from TMVA::MethodBase.
Definition at line 2696 of file MethodBDT.cxx.
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call the Optimzier with the set of paremeters and ranges that are meant to be tuned.
Reimplemented from TMVA::MethodBase.
Definition at line 1059 of file MethodBDT.cxx.
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o.k.
you know there are events with negative event weights. This routine will remove them by pairing them with the closest event(s) of the same event class with positive weights A first attempt is "brute force", I dont' try to be clever using search trees etc, just quick and dirty to see if the result is any good
Definition at line 921 of file MethodBDT.cxx.
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Return the MVA value (range [-1;1]) that classifies the event according to the majority vote from the total number of decision trees.
Definition at line 2340 of file MethodBDT.cxx.
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the option string is decoded, for available options see "DeclareOptions"
Implements TMVA::MethodBase.
Definition at line 463 of file MethodBDT.cxx.
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read the weights (BDT coefficients)
Implements TMVA::MethodBase.
Definition at line 2281 of file MethodBDT.cxx.
reads the BDT from the xml file
Implements TMVA::MethodBase.
Definition at line 2214 of file MethodBDT.cxx.
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a special boosting only for Regression ...
maybe I'll implement it later...
Definition at line 2058 of file MethodBDT.cxx.
reset the method, as if it had just been instantiated (forget all training etc.)
Reimplemented from TMVA::MethodBase.
Definition at line 718 of file MethodBDT.cxx.
Definition at line 138 of file MethodBDT.h.
Definition at line 142 of file MethodBDT.h.
Definition at line 133 of file MethodBDT.h.
Definition at line 652 of file MethodBDT.cxx.
Definition at line 665 of file MethodBDT.cxx.
Definition at line 139 of file MethodBDT.h.
Definition at line 137 of file MethodBDT.h.
Definition at line 140 of file MethodBDT.h.
set the tuning parameters accoding to the argument
Reimplemented from TMVA::MethodBase.
Definition at line 1112 of file MethodBDT.cxx.
Definition at line 141 of file MethodBDT.h.
Double_t TMVA::MethodBDT::TestTreeQuality | ( | DecisionTree * | dt | ) |
test the tree quality.. in terms of Miscalssification
Definition at line 1564 of file MethodBDT.cxx.
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Calculate residua for all events;.
Definition at line 1423 of file MethodBDT.cxx.
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Calculate current residuals for all events and update targets for next iteration.
Definition at line 1456 of file MethodBDT.cxx.
Here we could write some histograms created during the processing to the output file.
Reimplemented from TMVA::MethodBase.
Definition at line 2488 of file MethodBDT.cxx.
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