somnode.java

Kohonen网络的学习过程可描述为：对于每一个网络的输入

package fi.javasom.jsom;
/**
 * This is a node object known as weight vector or input vector.
 *
 *  Copyright (C) 2001  Tomi Suuronen
 *
 *  @version 1.0
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

public class SomNode
{
	private String label;
	private double[] values;
	private double[] location;
	private boolean labeled;

	/**
	 * Main constructor.
	*/
	public SomNode()
	{
		label = "";
		values = new double[1];
		location = new double[1];
		labeled = false;
	}

	/**
	 * Main constructor (for input vectors).
	 *
	 * @param String label - Name of this node.
	 * @param double[] values - All the values of this node.
	*/
	public SomNode(String label, double[] values)
	{
		this.label = label;
		labeled = true;
		this.values = (double[])values.clone();
		location = new double[1];
	}

	/**
	 * Main constructor (for weight vectors).
	 *
	 * @param String label - Name of this node.
	 * @param double[] values - All the values of this node.
	 * @param double[] location - The location of this node.
	*/
	public SomNode(double[] values, double[] location)
	{
		label = "";
		labeled = false;
		this.values = (double[])values.clone();
		this.location = (double[])location.clone();
	}

	/*
	 * Sets values for every dimension in this node.
	 *
	 * @param double[] values - Sets all the values for this node.
	*/
	public void setValues(double[] values)
	{
		this.values = (double[])values.clone();
	}

	/**
	 * Returns all the values of this node.
	 *
	 * @return double[] - Returns the numerical presentation of this node.
	*/
	public double[] getValues()
	{
		return ((double[])values.clone());
	}

	/**
	 * Set the label name for this node.
	 *
	 * @param String - Label of this node.
	*/
	public void setLabel(String label)
	{
		this.label = label;
		labeled = true;
	}

	/**
	 * Set the secondary label(s) for this node.
	 *
	 * @param String - Another label of this node.
	*/
	public void addLabel(String label)
	{
		this.label = this.label + ", " + label;
	}

	/**
	 * Returns the label of this node.
	 *
	 * @return String - Returns the label of this node if any.
	*/
	public String getLabel()
	{
		return label;
	}

	/**
	 * Returns the location of this node.
	 *
	 * @return double[] - Returns the location of this node if any.
	*/
	public double[] getLocation()
	{
		return ((double[])location.clone());
	}

	/**
	 * Returns the information about wether labeling has been done.
	 *
	 * @return boolean - Returns true if this node has been labeled otherwise false.
	*/
	public boolean isLabeled()
	{
		return labeled;
	}
}