MVAUtils::NodeTMVA Class Reference

Node for TMVA implementation. More...

#include <NodeImpl.h>

Collaboration diagram for MVAUtils::NodeTMVA:

Public Member Functions
	NodeTMVA (const int ivar, const float val, const index_t right)
	The constructor gets the index of the variable to cut on (-1 if leaf), the index of the right child (value not used if a leaf), and the value to cut on (if not leaf) or the respons (if leaf). More...
void	Print (index_t index) const
	For debugging only: print the node values. More...
index_t	GetNext (const float value, index_t index) const
	Based on the value of the variable that's passed in, return the index of the appropriate child. More...
bool	IsLeaf () const
	is the current node a leaf node More...
var_t	GetVar () const
	The variable index to cut on (or -1 if leaf, but use IsLeaf instead if checking for leaf) More...
float	GetVal () const
	The value to cut on (if not leaf), or the response (if leaf). More...
index_t	GetLeft (index_t index) const
	For debugging: returns the index of the left node; is passed the current node index. More...
index_t	GetRight (index_t index) const
	For debugging: returns the index of the right node; is passed the current node index. More...

Private Attributes
float	m_cut
	cut value for internal nodes or response for leaf nodes More...
int16_t	m_right
	right relative index (to be added to current) (left is always current + 1) More...
var_t	m_var
	index of the variable to cut for internal nodes, -1 for leaf nodes More...

Detailed Description

Node for TMVA implementation.

This follows the implementation in TMVA. next = value >= cut ? left : right

Definition at line 35 of file NodeImpl.h.

Constructor & Destructor Documentation

NodeTMVA()

MVAUtils::NodeTMVA::NodeTMVA ( const int  ivar, const float  val, const index_t  right  )

inline

The constructor gets the index of the variable to cut on (-1 if leaf), the index of the right child (value not used if a leaf), and the value to cut on (if not leaf) or the respons (if leaf).

Definition at line 42 of file NodeImpl.h.

                                                                  :
      m_cut(val), m_right(right), m_var(ivar) { }

Member Function Documentation

GetLeft()

index_t MVAUtils::NodeTMVA::GetLeft ( index_t  index ) const

inline

For debugging: returns the index of the left node; is passed the current node index.

Definition at line 64 of file NodeImpl.h.

{ return index + 1; }

GetNext()

index_t MVAUtils::NodeTMVA::GetNext ( const float  value, index_t  index  ) const

inline

Based on the value of the variable that's passed in, return the index of the appropriate child.

Assumes the node is not a leaf (i.e., there is no check). Must also pass the current node index.

Definition at line 78 of file NodeImpl.h.

                                                                         {
    return (value >= m_cut) ? GetLeft(index) : GetRight(index);
  }

GetRight()

index_t MVAUtils::NodeTMVA::GetRight ( index_t  index ) const

inline

For debugging: returns the index of the right node; is passed the current node index.

Definition at line 68 of file NodeImpl.h.

{ return index + m_right; }

GetVal()

float MVAUtils::NodeTMVA::GetVal ( ) const

inline

The value to cut on (if not leaf), or the response (if leaf).

Definition at line 60 of file NodeImpl.h.

{ return m_cut; }

GetVar()

var_t MVAUtils::NodeTMVA::GetVar ( ) const

inline

The variable index to cut on (or -1 if leaf, but use IsLeaf instead if checking for leaf)

Definition at line 57 of file NodeImpl.h.

{ return m_var; }

IsLeaf()

bool MVAUtils::NodeTMVA::IsLeaf ( ) const

inline

is the current node a leaf node

Definition at line 54 of file NodeImpl.h.

Print()

void NodeTMVA::Print

(

index_t

index

)

const

For debugging only: print the node values.

Definition at line 11 of file NodeImpl.cxx.

{
  std::cout << "     Variable: " << int(m_var) << ", Cut: " << m_cut
            << " (index = " << index << ")" << std::endl;
}

Member Data Documentation

m_cut

float MVAUtils::NodeTMVA::m_cut

private

cut value for internal nodes or response for leaf nodes

Definition at line 72 of file NodeImpl.h.

m_right

int16_t MVAUtils::NodeTMVA::m_right

private

right relative index (to be added to current) (left is always current + 1)

Definition at line 73 of file NodeImpl.h.

m_var

var_t MVAUtils::NodeTMVA::m_var

private

index of the variable to cut for internal nodes, -1 for leaf nodes

Definition at line 74 of file NodeImpl.h.

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

• NodeImpl.h
• NodeImpl.cxx