TestNeighborhood.java

/*
 * Encog(tm) Core v3.4 - Java Version
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 * Copyright 2008-2016 Heaton Research, Inc.
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package org.encog.neural.networks.training.competitive.neighborhood;

import junit.framework.TestCase;

import org.encog.mathutil.rbf.GaussianFunction;
import org.encog.mathutil.rbf.RadialBasisFunction;
import org.encog.neural.som.training.basic.neighborhood.NeighborhoodBubble;
import org.encog.neural.som.training.basic.neighborhood.NeighborhoodRBF1D;
import org.encog.neural.som.training.basic.neighborhood.NeighborhoodSingle;
import org.junit.Assert;

public class TestNeighborhood extends TestCase {
	
	public void testBubble() throws Throwable
	{
		NeighborhoodBubble bubble = new NeighborhoodBubble(2);
		Assert.assertEquals(0.0, bubble.function(5, 0),0.1);
		Assert.assertEquals(1.0, bubble.function(5, 4),0.1);
		Assert.assertEquals(1.0, bubble.function(5, 5),0.1);
	}
	
	public void testSingle() throws Throwable {
		NeighborhoodSingle bubble = new NeighborhoodSingle();
		Assert.assertEquals(0.0, bubble.function(5, 0),0.1);
		Assert.assertEquals(1.0, bubble.function(5, 5),0.1);	
	}
	
	public void testGaussian() throws Throwable {
		RadialBasisFunction radial = new GaussianFunction(0.0,1.0,1.0);
		NeighborhoodRBF1D bubble = new NeighborhoodRBF1D(radial);
		Assert.assertEquals(0.0, bubble.function(5, 0),0.1);
		Assert.assertEquals(1.0, bubble.function(5, 5),0.1);
		Assert.assertEquals(0.6, bubble.function(5, 4),0.1);
	}

}