CLUS::BinarySplitter Class Reference

Base class for all the splitters. More...

#include <binarysplitter.h>

Inheritance diagram for CLUS::BinarySplitter:

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Public Member Functions
	BinarySplitter ()
	BinarySplitter (const Vector< int > &DDomainSize, int CsplitDim, int RegDim)
	BinarySplitter (BinarySplitter &aux)
int	GetRegDim (void)
int	GetCSplitDim (void)
int	GetDSplitDim (void)
const Vector< int > &	GetDDomainSize (void)
int	ChooseBranch (const int *Dvars, const double *Cvars)
	Decides what branch to choose.
double	ProbabilityFirstBranch (const int *Dvars, const double *Cvars)
	Computes probability to take first branch.
void	InitializeSplitStatistics (void)
	Initializes the data structures used in split variable selection.
void	UpdateSplitStatistics (const int *Dvars, const double *Cvars, double p1, double p2)
	Updates the necessary statistics for split variable selection.
int	ComputeSplitVariable (int type)
	Decides on a split variable and frees the data structures used in split selection.
bool	MoreSplits (int branch, int Min_no_datapoints)
	Ask if it is worth doing more splits in the future.
void	DeleteTemporaryStatistics (void)
	Cleans up all the unnecessary statistics after the decision has been made.
void	SaveToStream (ostream &out)
	~BinarySplitter (void)
Protected Attributes
int	dsplitDim
	the number of discrete split variables (nonregressers)
int	csplitDim
	the number of continuous split variables (nonregressoers)
int	regDim
	the number of regressors
const Vector< int > &	dDomainSize
	list of discrete domain sizes
int	SplitVariable
	Indicates on what variable this node splits on.
Vector< double >	SeparatingHyperplane
	Contains the coeficients of the hyperplane that separates the 2 distributions in the input space.
Vector< double >	splitSetProbability
	Contains the probability for a value to be in the left partition.

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Detailed Description

Base class for all the splitters.

Specifies the interface

Definition at line 48 of file binarysplitter.h.

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Constructor & Destructor Documentation

CLUS::BinarySplitter::BinarySplitter (   )  [inline]

Definition at line 76 of file binarysplitter.h.

CLUS::BinarySplitter::BinarySplitter (  const Vector< int > &  DDomainSize, int  CsplitDim, int  RegDim )  [inline]

Definition at line 79 of file binarysplitter.h.

CLUS::BinarySplitter::BinarySplitter (  BinarySplitter &  aux  )  [inline]

Definition at line 85 of file binarysplitter.h.

CLUS::BinarySplitter::~BinarySplitter (  void   )  [inline]

Definition at line 175 of file binarysplitter.h.

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Member Function Documentation

int CLUS::BinarySplitter::ChooseBranch (  const int *  Dvars, const double *  Cvars )  [inline]

Decides what branch to choose. Reimplemented in CLUS::BinaryObliqueSplitter. Definition at line 111 of file binarysplitter.h. Referenced by ProbabilityFirstBranch().

int CLUS::BinarySplitter::ComputeSplitVariable (  int  type  )  [inline]

Decides on a split variable and frees the data structures used in split selection. Returns: 0 if a split variable could be computed, -1 otherwise. Reimplemented in CLUS::BinaryObliqueSplitter. Definition at line 134 of file binarysplitter.h.

void CLUS::BinarySplitter::DeleteTemporaryStatistics (  void   )  [inline]

Cleans up all the unnecessary statistics after the decision has been made. Reimplemented in CLUS::BinaryObliqueSplitter. Definition at line 146 of file binarysplitter.h.

int CLUS::BinarySplitter::GetCSplitDim (  void   )  [inline]

Definition at line 95 of file binarysplitter.h.

const Vector<int>& CLUS::BinarySplitter::GetDDomainSize (  void   )  [inline]

Definition at line 105 of file binarysplitter.h.

int CLUS::BinarySplitter::GetDSplitDim (  void   )  [inline]

Definition at line 100 of file binarysplitter.h.

int CLUS::BinarySplitter::GetRegDim (  void   )  [inline]

Definition at line 91 of file binarysplitter.h.

void CLUS::BinarySplitter::InitializeSplitStatistics (  void   )  [inline]

Initializes the data structures used in split variable selection. Reimplemented in CLUS::BinaryObliqueSplitter. Definition at line 125 of file binarysplitter.h.

bool CLUS::BinarySplitter::MoreSplits (  int  branch, int  Min_no_datapoints )  [inline]

Ask if it is worth doing more splits in the future. Reimplemented in CLUS::BinaryObliqueSplitter. Definition at line 140 of file binarysplitter.h.

double CLUS::BinarySplitter::ProbabilityFirstBranch (  const int *  Dvars, const double *  Cvars )  [inline]

Computes probability to take first branch. Need this to accomodate probabilistic splitters Definition at line 116 of file binarysplitter.h.

void CLUS::BinarySplitter::SaveToStream (  ostream &  out  )  [inline]

Definition at line 149 of file binarysplitter.h.

void CLUS::BinarySplitter::UpdateSplitStatistics (  const int *  Dvars, const double *  Cvars, double  p1, double  p2 )  [inline]

Updates the necessary statistics for split variable selection. Definition at line 129 of file binarysplitter.h.

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Field Documentation

int CLUS::BinarySplitter::csplitDim [protected]

the number of continuous split variables (nonregressoers) Definition at line 55 of file binarysplitter.h. Referenced by BinarySplitter(), GetCSplitDim(), CLUS::BinaryObliqueSplitter::InitializeSplitStatistics(), and CLUS::BinaryObliqueSplitter::ProbabilityLeftPrivate().

const Vector<int>& CLUS::BinarySplitter::dDomainSize [protected]

list of discrete domain sizes Definition at line 61 of file binarysplitter.h. Referenced by BinarySplitter(), GetDDomainSize(), and CLUS::BinaryObliqueSplitter::InitializeSplitStatistics().

int CLUS::BinarySplitter::dsplitDim [protected]

the number of discrete split variables (nonregressers) Definition at line 52 of file binarysplitter.h. Referenced by BinarySplitter(), CLUS::BinaryObliqueSplitter::ComputeSplitVariable(), GetDSplitDim(), CLUS::BinaryObliqueSplitter::InitializeSplitStatistics(), and CLUS::BinaryObliqueSplitter::UpdateSplitStatistics().

int CLUS::BinarySplitter::regDim [protected]

the number of regressors Definition at line 58 of file binarysplitter.h. Referenced by BinarySplitter(), GetRegDim(), CLUS::BinaryObliqueSplitter::InitializeSplitStatistics(), and CLUS::BinaryObliqueSplitter::ProbabilityLeftPrivate().

Vector<double> CLUS::BinarySplitter::SeparatingHyperplane [protected]

Contains the coeficients of the hyperplane that separates the 2 distributions in the input space. This is an oblique split Definition at line 69 of file binarysplitter.h. Referenced by BinarySplitter(), CLUS::BinaryObliqueSplitter::ComputeSplitVariable(), CLUS::BinaryObliqueSplitter::ProbabilityLeftPrivate(), and SaveToStream().

Vector<double> CLUS::BinarySplitter::splitSetProbability [protected]

Contains the probability for a value to be in the left partition. In traditional classifiers is set to 1.0 or 0.0 Definition at line 73 of file binarysplitter.h. Referenced by BinarySplitter(), CLUS::BinaryObliqueSplitter::ComputeSplitVariable(), CLUS::BinaryObliqueSplitter::ProbabilityLeftPrivate(), and SaveToStream().

int CLUS::BinarySplitter::SplitVariable [protected]

Indicates on what variable this node splits on. If -1 we have an oblique split. Definition at line 65 of file binarysplitter.h. Referenced by CLUS::BinaryObliqueSplitter::ComputeSplitVariable(), CLUS::BinaryObliqueSplitter::ProbabilityLeftPrivate(), and SaveToStream().

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The documentation for this class was generated from the following file:

• binarysplitter.h

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