org.ai_heuristic.algo.cluster.som.neighbourhood

Class FractionNeighbourhoodFunction

java.lang.Object

org.ai_heuristic.algo.cluster.som.neighbourhood.FractionNeighbourhoodFunction

All Implemented Interfaces:

NeighbourhoodFunctionModel

public class FractionNeighbourhoodFunction
extends java.lang.Object
implements NeighbourhoodFunctionModel

New fraction function that reduces the influence to a fraction, depending on the neighbourhood distance from the best neuron.

Author:

Kieran Greer.

Constructor Summary

Constructors

Constructor and Description
FractionNeighbourhoodFunction() Creates a new instance of FractionNeighbourhoodFunction with specified radius

Method Summary

Modifier and Type	Method and Description
double[]	getParameters() Return an empty array.
double	getValue(int distance) Return value calculated by function describe as 1.0 / (distance + 1.0)
void	setParameters(double[] parameters) Set parameters.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FractionNeighbourhoodFunction

public FractionNeighbourhoodFunction()

Creates a new instance of FractionNeighbourhoodFunction with specified radius

Method Detail

getParameters

public double[] getParameters()

Return an empty array.

Specified by:

getParameters in interface NeighbourhoodFunctionModel

Returns:

constant parameter

setParameters

public void setParameters(double[] parameters)

Set parameters. No parameters, so ignored.

Specified by:

setParameters in interface NeighbourhoodFunctionModel

Parameters:

parameters - constat value

getValue

public double getValue(int distance)

Return value calculated by function describe as 1.0 / (distance + 1.0)

Specified by:

getValue in interface NeighbourhoodFunctionModel

Parameters:

distance - distance value

Returns:

value of function factor