BPneuron Class Reference

neuron for a back prop neural net (BPnnet) More...

#include <BPnnet/BPneuron.H>

List of all members.

Public Member Functions
	BPneuron ()
	Constructor.
	~BPneuron ()
	Destructor.
void	assignInput (double input)
	Assign given weighted input sum [S_j] and activation level.
double	calcOutputDelta (const double target)
	Calculate and set delta for output neurons.
void	calcHiddenDelta (double weightedDeltaSum)
	Calculate and set delta for hidden neurons.
double	getDelta ()
	Return delta (error level).
double	getActivationLevel ()
	Return activation level.

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Detailed Description

neuron for a back prop neural net (BPnnet)

Definition at line 42 of file BPneuron.H.

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Constructor & Destructor Documentation

BPneuron::BPneuron

(

void

)

Constructor.

Definition at line 42 of file BPneuron.C.

BPneuron::~BPneuron

(

)

Destructor.

Definition at line 50 of file BPneuron.C.

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Member Function Documentation

void BPneuron::assignInput

(

double

input

)

Assign given weighted input sum [S_j] and activation level.

Activation Level a_j = f(S_j)

Definition at line 54 of file BPneuron.C.

void BPneuron::calcHiddenDelta

(

double

weightedDeltaSum

)

Calculate and set delta for hidden neurons.

For hidden layer neurons; compute hidden delta from weighted sum of output deltas [delta_j = sum_k(delta_k * w_kj)*f'(S_j)] returns delta_j

Definition at line 70 of file BPneuron.C.

double BPneuron::calcOutputDelta

(

const double

target

)

Calculate and set delta for output neurons.

For output layer neurons; finds difference between output and target and multiplies by derivative of sigmoid function [delta_j = (t_j - a_j)*f'(S_j)] returns the difference [t_j - a_j] for RMS error calculation

Definition at line 61 of file BPneuron.C.

double BPneuron::getActivationLevel

(

void

)

Return activation level.

Definition at line 83 of file BPneuron.C.

double BPneuron::getDelta

(

void

)

Return delta (error level).

Definition at line 77 of file BPneuron.C.

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

• src/BPnnet/BPneuron.H
• src/BPnnet/BPneuron.C