weight.java

神经网络源代码,实现了一个BP神经网络,可以完成基于BP的神经网络算法.

package net.openai.ai.nn.network;

import java.io.*;

public class Weight implements Serializable {

    double value = 0;

    double lastDelta = 0;

    public Weight() {
	//  set the initial weight to be a random number between -1 and 1
	value = (Math.random() - 0.5);
    }

    /**
     *
     * Get the weight's value.
     * @return double The value of this weight.
     */
    public double getValue() {
	return value;
    }
    
    /**
     *
     * Set the weight's value.
     * @param value The value of this weight.
     */
    public void setValue(double value) {
	lastDelta = this.value - value;
	this.value = value;
    }

    /**
     *
     * Get the weight's lastDelta.
     * @return double The lastDelta of this weight.
     */
    public double getLastDelta() {
	return lastDelta;
    }
    
    /**
     *
     * Set the weight's lastDelta.
     * @param lastDelta The lastDelta of this weight.
     */
    public void setLastDelta(double lastDelta) {
	this.lastDelta = lastDelta;
    }

}