TMVA::TActivationTanh Class Reference

Tanh activation function for ANN.

This really simple implementation uses TFormula and should probably be replaced with something more efficient later.

Definition at line 42 of file TActivationTanh.h.

Public Member Functions
	TActivationTanh ()
	constructor for tanh sigmoid (normalized in [-1,1]) More...
	~TActivationTanh ()
	destructor More...
Double_t	Eval (Double_t arg)
	evaluate the tanh More...
Double_t	EvalDerivative (Double_t arg)
	evaluate the derivative More...
TString	GetExpression ()
	get expressions for the tanh and its derivative whatever that may be good for ... More...
Double_t	GetMax ()
Double_t	GetMin ()
virtual void	MakeFunction (std::ostream &fout, const TString &fncName)
	writes the sigmoid activation function source code More...
void	SetSlow ()
Public Member Functions inherited from TMVA::TActivation
	TActivation ()
virtual	~TActivation ()

Private Member Functions
Double_t	fast_tanh (Double_t arg)
	a fast tanh approximation More...

Private Attributes
Bool_t	fFAST

#include <TMVA/TActivationTanh.h>

Inheritance diagram for TMVA::TActivationTanh:

Constructor & Destructor Documentation

TActivationTanh()

TMVA::TActivationTanh::TActivationTanh

(

)

constructor for tanh sigmoid (normalized in [-1,1])

Definition at line 46 of file TActivationTanh.cxx.

~TActivationTanh()

TMVA::TActivationTanh::~TActivationTanh

(

)

destructor

Definition at line 54 of file TActivationTanh.cxx.

Member Function Documentation

Eval()

Double_t TMVA::TActivationTanh::Eval ( Double_t  arg )

virtual

evaluate the tanh

Implements TMVA::TActivation.

Definition at line 73 of file TActivationTanh.cxx.

EvalDerivative()

Double_t TMVA::TActivationTanh::EvalDerivative ( Double_t  arg )

virtual

evaluate the derivative

Implements TMVA::TActivation.

Definition at line 81 of file TActivationTanh.cxx.

fast_tanh()

Double_t TMVA::TActivationTanh::fast_tanh ( Double_t  arg )

private

a fast tanh approximation

Definition at line 61 of file TActivationTanh.cxx.

GetExpression()

TString TMVA::TActivationTanh::GetExpression ( )

virtual

get expressions for the tanh and its derivative whatever that may be good for ...

Implements TMVA::TActivation.

Definition at line 91 of file TActivationTanh.cxx.

GetMax()

Double_t TMVA::TActivationTanh::GetMax ( )

inlinevirtual

Implements TMVA::TActivation.

Definition at line 59 of file TActivationTanh.h.

GetMin()

Double_t TMVA::TActivationTanh::GetMin ( )

inlinevirtual

Implements TMVA::TActivation.

Definition at line 56 of file TActivationTanh.h.

MakeFunction()

void TMVA::TActivationTanh::MakeFunction ( std::ostream &  fout, const TString &  fncName  )

virtual

writes the sigmoid activation function source code

Implements TMVA::TActivation.

Definition at line 100 of file TActivationTanh.cxx.

SetSlow()

void TMVA::TActivationTanh::SetSlow ( )

inline

Definition at line 67 of file TActivationTanh.h.

Member Data Documentation

fFAST

Bool_t TMVA::TActivationTanh::fFAST

private

Definition at line 71 of file TActivationTanh.h.

Libraries for TMVA::TActivationTanh:

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