Implementation of PDEFoam.
The PDEFoam method is an extension of the PDERS method, which uses self-adapting binning to divide the multi-dimensional phase space in a finite number of hyper-rectangles (boxes).
For a given number of boxes, the binning algorithm adjusts the size and position of the boxes inside the multidimensional phase space, minimizing the variance of the signal and background densities inside the boxes. The binned density information is stored in binary trees, allowing for a very fast and memory-efficient classification of events.
The implementation of the PDEFoam is based on the monte-carlo integration package TFoam included in the analysis package ROOT.
The class TMVA::PDEFoam defines the default interface for the PDEFoam variants:
Per default PDEFoam stores in the cells the number of events (event weights) and therefore acts as an event density estimator. However, the above listed derived classes override this behaviour to implement certain PDEFoam variations.
In order to use PDEFoam the user has to set the density estimator of the type TMVA::PDEFoamDensityBase, which is used to during the foam build-up. The default PDEFoam should be used with PDEFoamEventDensity.
Public Member Functions | |
PDEFoam () | |
Default constructor for streamer, user should not use it. More... | |
PDEFoam (const TString &) | |
User constructor, to be employed by the user. More... | |
virtual | ~PDEFoam () |
Default destructor. More... | |
void | AddVariableName (const char *s) |
void | AddVariableName (TObjString *s) |
void | CheckAll (Int_t) |
User utility, miscellaneous and debug. More... | |
void | Create () |
Basic initialization of FOAM invoked by the user. More... | |
void | DeleteBinarySearchTree () |
Delete the foam's density estimator, which contains the binary search tree. More... | |
TH1D * | Draw1Dim (ECellValue cell_value, Int_t nbin, PDEFoamKernelBase *kernel=NULL) |
Draws 1-dimensional foam (= histogram) More... | |
void | FillBinarySearchTree (const Event *ev) |
Insert event to internal foam's density estimator PDEFoamDensityBase. More... | |
virtual void | FillFoamCells (const Event *ev, Float_t wt) |
This function fills a weight 'wt' into the PDEFoam cell, which corresponds to the given event 'ev'. More... | |
virtual void | Finalize () |
virtual Float_t | GetCellValue (const PDEFoamCell *cell, ECellValue cv) |
Returns the cell value of 'cell' corresponding to the given option 'cv'. More... | |
virtual std::vector< Float_t > | GetCellValue (const std::map< Int_t, Float_t > &xvec, ECellValue cv) |
This function finds all cells, which corresponds to the given (incomplete) untransformed event vector 'xvec' and returns the cell values, according to the parameter 'cv'. More... | |
virtual Float_t | GetCellValue (const std::vector< Float_t > &xvec, ECellValue cv, PDEFoamKernelBase *) |
This function finds the cell, which corresponds to the given untransformed event vector 'xvec' and return its value, which is given by the parameter 'cv'. More... | |
TString | GetFoamName () const |
UInt_t | GetMaxDepth () const |
UInt_t | GetNActiveCells () const |
UInt_t | GetNCells () const |
UInt_t | GetNInActiveCells () const |
UInt_t | GetNmin () |
PDEFoamCell * | GetRootCell () const |
Int_t | GetTotDim () const |
TObjString * | GetVariableName (Int_t idx) |
Double_t | GetXmax (Int_t idim) const |
Double_t | GetXmin (Int_t idim) const |
void | Initialize () |
MsgLogger & | Log () const |
void | PrintCell (Long_t iCell=0) |
Prints geometry of and elements of 'iCell', as well as relations to parent and daughter cells. More... | |
void | PrintCells () |
Prints geometry of ALL cells of the FOAM. More... | |
virtual TH2D * | Project2 (Int_t idim1, Int_t idim2, ECellValue cell_value=kValue, PDEFoamKernelBase *kernel=NULL, UInt_t nbin=50) |
Project foam variable idim1 and variable idim2 to histogram. More... | |
void | ResetCellElements () |
Remove the cell elements from all cells. More... | |
void | RootPlot2dim (const TString &filename, TString opt, Bool_t createCanvas=kTRUE, Bool_t colors=kTRUE) |
Debugging tool which plots the cells of a 2-dimensional PDEFoam as rectangles in C++ format readable for ROOT. More... | |
void | SetDensity (PDEFoamDensityBase *dens) |
void | SetDim (Int_t kDim) |
Sets dimension of cubical space. More... | |
void | SetEvPerBin (Int_t EvPerBin) |
void | SetInhiDiv (Int_t, Int_t) |
This can be called before Create, after setting kDim It defines which variables are excluded in the process of the cell division. More... | |
void | SetMaxDepth (UInt_t maxdepth) |
void | SetnBin (Int_t nBin) |
void | SetnCells (Long_t nCells) |
void | SetNmin (UInt_t val) |
void | SetnSampl (Long_t nSampl) |
void | SetXmax (Int_t idim, Double_t wmax) |
set upper foam bound in dimension idim More... | |
void | SetXmin (Int_t idim, Double_t wmin) |
set lower foam bound in dimension idim More... | |
std::vector< Float_t > | VarTransform (const std::vector< Float_t > &invec) const |
Float_t | VarTransform (Int_t idim, Float_t x) const |
std::vector< Float_t > | VarTransformInvers (const std::vector< Float_t > &invec) const |
Float_t | VarTransformInvers (Int_t idim, Float_t x) const |
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... | |
ULong_t | CheckedHash () |
Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More... | |
virtual const char * | ClassName () const |
Returns name of class to which the object belongs. More... | |
virtual void | Clear (Option_t *="") |
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 abstract method. More... | |
virtual void | Copy (TObject &object) const |
Copy this to obj. 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 selected pad for instance with: gROOT->SetSelectedPad(gPad) . 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 const char * | GetName () const |
Returns 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 const char * | GetTitle () const |
Returns title of object. More... | |
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 ULong_t | Hash () const |
Return hash value for this object. More... | |
Bool_t | HasInconsistentHash () const |
Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. 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... | |
R__ALWAYS_INLINE Bool_t | IsOnHeap () const |
virtual Bool_t | IsSortable () const |
R__ALWAYS_INLINE Bool_t | IsZombie () const |
virtual void | ls (Option_t *option="") const |
The ls function lists the contents of a class on stdout. More... | |
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 void | Print (Option_t *option="") const |
This method must be overridden when a class wants to print itself. 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) |
void | SetBit (UInt_t f, Bool_t set) |
Set or unset the user status bits as specified in f. More... | |
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... | |
R__ALWAYS_INLINE 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 | |
PDEFoam (const PDEFoam &) | |
Copy Constructor NOT IMPLEMENTED (NEVER USED) More... | |
Int_t | CellFill (Int_t, PDEFoamCell *) |
Internal subprogram used by Create. More... | |
virtual Bool_t | CellValueIsUndefined (PDEFoamCell *) |
Returns true, if the value of the given cell is undefined. More... | |
Int_t | Divide (PDEFoamCell *) |
Internal subprogram used by Create. More... | |
Double_t | Eval (Double_t *xRand, Double_t &event_density) |
Internal subprogram. More... | |
virtual void | Explore (PDEFoamCell *Cell) |
Internal subprogram used by Create. More... | |
PDEFoamCell * | FindCell (const std::vector< Float_t > &) const |
Find cell that contains 'xvec' (in foam coordinates [0,1]). More... | |
std::vector< TMVA::PDEFoamCell * > | FindCells (const std::map< Int_t, Float_t > &) const |
Find all cells, that contain the coordinates specified in txvec. More... | |
void | FindCells (const std::map< Int_t, Float_t > &, PDEFoamCell *, std::vector< PDEFoamCell * > &) const |
This is a helper function for std::vector<PDEFoamCell*> FindCells(...) and a generalisation of PDEFoamCell* FindCell(). More... | |
std::vector< TMVA::PDEFoamCell * > | FindCells (const std::vector< Float_t > &) const |
Find all cells, that contain txvec. More... | |
Double_t | GetCellElement (const PDEFoamCell *cell, UInt_t i) const |
Returns cell element i of cell 'cell'. More... | |
PDEFoamDensityBase * | GetDistr () const |
void | Grow () |
Internal subprogram used by Create. More... | |
void | InitCells () |
Internal subprogram used by Create. More... | |
void | MakeAlpha () |
Internal subprogram used by Create. More... | |
void | OutputGrow (Bool_t finished=false) |
message logger More... | |
Long_t | PeekMax () |
Internal subprogram used by Create. More... | |
void | SetCellElement (PDEFoamCell *cell, UInt_t i, Double_t value) |
Set cell element i of cell to value. More... | |
template<typename T > | |
T | Sqr (T x) const |
void | Varedu (Double_t[], Int_t &, Double_t &, Double_t &) |
Internal subprogram used by Create. 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 () |
Protected Attributes | |
Double_t * | fAlpha |
PDEFoamCell ** | fCells |
Int_t | fDim |
PDEFoamDensityBase * | fDistr |
EDTSeparation | fDTSeparation |
Int_t | fEvPerBin |
Bool_t | fFillFoamWithOrigWeights |
EFoamType | fFoamType |
TObjArray * | fHistEdg |
Int_t * | fInhiDiv |
[fDim] Dynamic Mask for cell division More... | |
Int_t | fLastCe |
MsgLogger * | fLogger |
Int_t * | fMaskDiv |
UInt_t | fMaxDepth |
TString | fName |
Int_t | fNBin |
Int_t | fNCells |
UInt_t | fNElements |
UInt_t | fNmin |
Int_t | fNoAct |
[fDim] Flags for inhibiting cell division More... | |
Int_t | fNSampl |
Bool_t | fPeekMax |
TRandom3 * | fPseRan |
Double_t * | fRvec |
Timer * | fTimer |
distribution of training events More... | |
TObjArray * | fVariableNames |
timer for graphical output More... | |
Float_t | fVolFrac |
Double_t * | fXmax |
Double_t * | fXmin |
Friends | |
class | PDEFoamKernelBase |
class | PDEFoamKernelGauss |
class | PDEFoamKernelLinN |
class | PDEFoamKernelTrivial |
Additional Inherited Members | |
Public Types inherited from TObject | |
enum | { kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 , kBitMask = 0x00ffffff } |
enum | { kSingleKey = BIT(0) , kOverwrite = BIT(1) , kWriteDelete = BIT(2) } |
enum | EDeprecatedStatusBits { kObjInCanvas = BIT(3) } |
enum | EStatusBits { kCanDelete = BIT(0) , kMustCleanup = 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... | |
Protected Types inherited from TObject | |
enum | { kOnlyPrepStep = BIT(3) } |
#include <TMVA/PDEFoam.h>
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protected |
Copy Constructor NOT IMPLEMENTED (NEVER USED)
Definition at line 210 of file PDEFoam.cxx.
TMVA::PDEFoam::PDEFoam | ( | ) |
Default constructor for streamer, user should not use it.
Definition at line 104 of file PDEFoam.cxx.
TMVA::PDEFoam::PDEFoam | ( | const TString & | name | ) |
User constructor, to be employed by the user.
Definition at line 143 of file PDEFoam.cxx.
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virtual |
Default destructor.
Definition at line 185 of file PDEFoam.cxx.
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inline |
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protected |
Internal subprogram used by Create.
It initializes content of the newly allocated active cell.
Definition at line 390 of file PDEFoam.cxx.
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protectedvirtual |
Returns true, if the value of the given cell is undefined.
Default value: kFALSE. This function can be overridden by sub-classes.
Reimplemented in TMVA::PDEFoamTarget.
Definition at line 991 of file PDEFoam.cxx.
User utility, miscellaneous and debug.
Checks all pointers in the tree of cells. This is useful auto-diagnostic. level=0, no printout, failures causes STOP level=1, printout, failures lead to WARNINGS only
Definition at line 823 of file PDEFoam.cxx.
void TMVA::PDEFoam::Create | ( | ) |
Basic initialization of FOAM invoked by the user.
IMPORTANT: Random number generator and the distribution object has to be provided using SetPseRan and SetRho prior to invoking this initializator!
After the foam is grown, space for 2 variables is reserved in every cell. They are used for filling the foam cells.
Definition at line 293 of file PDEFoam.cxx.
void TMVA::PDEFoam::DeleteBinarySearchTree | ( | ) |
Delete the foam's density estimator, which contains the binary search tree.
Definition at line 1667 of file PDEFoam.cxx.
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protected |
Internal subprogram used by Create.
It divides cell iCell into two daughter cells. The iCell is retained and tagged as inactive, daughter cells are appended at the end of the buffer. New vertex is added to list of vertices. List of active cells is updated, iCell removed, two daughters added and their properties set with help of MC sampling (PDEFoam_Explore) Returns Code RC=-1 of buffer limit is reached, fLastCe=fnBuf.
Definition at line 715 of file PDEFoam.cxx.
TH1D * TMVA::PDEFoam::Draw1Dim | ( | ECellValue | cell_value, |
Int_t | nbin, | ||
PDEFoamKernelBase * | kernel = NULL |
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) |
Draws 1-dimensional foam (= histogram)
Parameters:
Definition at line 1219 of file PDEFoam.cxx.
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protectedvirtual |
Internal subprogram used by Create.
It explores newly defined cell with help of special short MC sampling. As a result, estimates of kTRUE and drive volume is defined/determined Average and dispersion of the weight distribution will is found along each edge and the best edge (minimum dispersion, best maximum weight) is memorized for future use. The optimal division point for eventual future cell division is determined/recorded. Recorded are also minimum and maximum weight etc. The volume estimate in all (inactive) parent cells is updated. Note that links to parents and initial volume = 1/2 parent has to be already defined prior to calling this routine.
If fNmin > 0 then the total number of (training) events found in the cell during the exploration is stored in the cell. This information is used within PeekMax() to avoid splitting cells which contain less than fNmin events.
Reimplemented in TMVA::PDEFoamDecisionTree.
Definition at line 435 of file PDEFoam.cxx.
Insert event to internal foam's density estimator PDEFoamDensityBase.
Definition at line 1658 of file PDEFoam.cxx.
This function fills a weight 'wt' into the PDEFoam cell, which corresponds to the given event 'ev'.
Per default cell element 0 is filled with the weight 'wt', and cell element 1 is filled with the squared weight. This function can be overridden by a subclass in order to change the values stored in the foam cells.
Reimplemented in TMVA::PDEFoamDiscriminant, TMVA::PDEFoamEvent, and TMVA::PDEFoamTarget.
Definition at line 956 of file PDEFoam.cxx.
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inlinevirtual |
Reimplemented in TMVA::PDEFoamDiscriminant, and TMVA::PDEFoamTarget.
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protected |
Find cell that contains 'xvec' (in foam coordinates [0,1]).
Loop to find cell that contains 'xvec' starting at root cell, and traversing binary tree to find the cell quickly. Note, that if 'xvec' lies outside the foam, the cell which is nearest to 'xvec' is returned. (The returned pointer should never be NULL.)
Parameters:
Return:
PDEFoam cell corresponding to 'xvec'
Definition at line 1081 of file PDEFoam.cxx.
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protected |
Find all cells, that contain the coordinates specified in txvec.
The key in 'txvec' is the dimension, and the corresponding value is the coordinate. Note, that not all coordinates have to be specified in txvec.
Parameters:
Return value:
Definition at line 1197 of file PDEFoam.cxx.
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protected |
This is a helper function for std::vector<PDEFoamCell*> FindCells(...) and a generalisation of PDEFoamCell* FindCell().
It saves in 'cells' all cells, which contain the coordinates specifies in 'txvec'. Note, that not all coordinates have to be specified in 'txvec'.
Parameters:
Definition at line 1119 of file PDEFoam.cxx.
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protected |
Find all cells, that contain txvec.
This function can be used, when the dimension of the foam is greater than the dimension of txvec. E.g. this is the case for multi-target regression.
Parameters:
Return value:
Definition at line 1166 of file PDEFoam.cxx.
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protected |
Returns cell element i of cell 'cell'.
If the cell has no elements or the index 'i' is out of range, than 0 is returned.
Definition at line 1417 of file PDEFoam.cxx.
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virtual |
Returns the cell value of 'cell' corresponding to the given option 'cv'.
This function should be overridden by the subclass in order to specify which cell elements to return for a given cell value 'cv'. By default kValue returns cell element 0, and kValueError returns cell element 1.
Reimplemented in TMVA::PDEFoamMultiTarget, and TMVA::PDEFoamTarget.
Definition at line 1357 of file PDEFoam.cxx.
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virtual |
This function finds all cells, which corresponds to the given (incomplete) untransformed event vector 'xvec' and returns the cell values, according to the parameter 'cv'.
Parameters:
Return:
cell values from all cells that were found
Reimplemented in TMVA::PDEFoamMultiTarget, TMVA::PDEFoamMultiTarget, and TMVA::PDEFoamTarget.
Definition at line 1044 of file PDEFoam.cxx.
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virtual |
This function finds the cell, which corresponds to the given untransformed event vector 'xvec' and return its value, which is given by the parameter 'cv'.
If kernel != NULL, then PDEFoamKernelBase::Estimate() is called on the transformed event variables.
Parameters:
Return:
The cell value, corresponding to 'xvec', estimated by the given kernel.
Reimplemented in TMVA::PDEFoamMultiTarget, TMVA::PDEFoamTarget, and TMVA::PDEFoamTarget.
Definition at line 1017 of file PDEFoam.cxx.
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inlineprotected |
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inline |
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inline |
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protected |
Internal subprogram used by Create.
It grow new cells by the binary division process. This function is overridden by the PDEFoam class to stop the foam buildup process if one of the cut conditions stop the cell split.
Definition at line 768 of file PDEFoam.cxx.
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protected |
Internal subprogram used by Create.
It initializes "root part" of the FOAM of the tree of cells.
Definition at line 357 of file PDEFoam.cxx.
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protected |
Internal subprogram used by Create.
Provides random vector Alpha 0< Alpha(i) < 1
Definition at line 638 of file PDEFoam.cxx.
message logger
Overridden function of PDEFoam to avoid native foam output.
Draw TMVA-process bar instead.
Definition at line 1461 of file PDEFoam.cxx.
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protected |
Internal subprogram used by Create.
It finds cell with maximal driver integral for the purpose of the division. This function is overridden by the PDEFoam Class to apply cuts on the number of events in the cell (fNmin) and the cell tree depth (GetMaxDepth() > 0) during cell buildup.
Definition at line 652 of file PDEFoam.cxx.
Prints geometry of and elements of 'iCell', as well as relations to parent and daughter cells.
Definition at line 896 of file PDEFoam.cxx.
Prints geometry of ALL cells of the FOAM.
Definition at line 943 of file PDEFoam.cxx.
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virtual |
Project foam variable idim1 and variable idim2 to histogram.
Parameters:
Returns: a 2-dimensional histogram
Reimplemented in TMVA::PDEFoamDiscriminant.
Definition at line 1271 of file PDEFoam.cxx.
void TMVA::PDEFoam::ResetCellElements | ( | ) |
Remove the cell elements from all cells.
Definition at line 972 of file PDEFoam.cxx.
void TMVA::PDEFoam::RootPlot2dim | ( | const TString & | filename, |
TString | opt, | ||
Bool_t | createCanvas = kTRUE , |
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Bool_t | colors = kTRUE |
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) |
Debugging tool which plots the cells of a 2-dimensional PDEFoam as rectangles in C++ format readable for ROOT.
Parameters:
Example:
The following commands load a mono-target regression foam from file 'foam.root' and create a ROOT macro 'output.C', which draws all PDEFoam cells with little boxes. The latter are filled with colors according to the target value stored in the cell. Also the cell number is drawn.
TFile file("foam.root"); TMVA::PDEFoam foam = (TMVA::PDEFoam) gDirectory->Get("MonoTargetRegressionFoam"); foam->RootPlot2dim("output.C","cell_value,cellnumber"); gROOT->Macro("output.C");
Definition at line 1512 of file PDEFoam.cxx.
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Set cell element i of cell to value.
If the cell element i does not exist, it is created.
Definition at line 1433 of file PDEFoam.cxx.
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Sets dimension of cubical space.
Definition at line 251 of file PDEFoam.cxx.
This can be called before Create, after setting kDim It defines which variables are excluded in the process of the cell division.
For example 'FoamX->SetInhiDiv(1, 1);' inhibits division of y-variable.
Definition at line 803 of file PDEFoam.cxx.
set upper foam bound in dimension idim
Definition at line 277 of file PDEFoam.cxx.
set lower foam bound in dimension idim
Definition at line 266 of file PDEFoam.cxx.
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Internal subprogram used by Create.
In determines the best edge candidate and the position of the cell division plane in case of the variance reduction for future cell division, using results of the MC exploration run stored in fHistEdg
Definition at line 571 of file PDEFoam.cxx.
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