layer.java

问使用java程序实现bp算法的问题!!我想对大家是有用的请看看

package bp;

import java.io.Serializable;

public class Layer implements Serializable{    
    private Neuron[] neurons;
    
    public Layer(int noOfNeurons, Layer previousLayer, double weightDefaultValue, int activationType) {
        neurons = new Neuron[noOfNeurons]; 
        for (int i = 0; i < neurons.length; ++i) {
            if (previousLayer != null) 
                neurons[i] = new Neuron(previousLayer.getNoOfNeurons(), weightDefaultValue, activationType);   
            else    
                neurons[i] = new Neuron(0, 0, activationType);
        }
    }
    
    public Layer(Layer layer) {
        neurons = new Neuron[layer.getNoOfNeurons()];
        for (int i = 0; i < layer.getNoOfNeurons(); ++i) {
            neurons[i] = new Neuron (layer.getNeuron (i));
        }
    }
    
    public int getNoOfNeurons(){
        return neurons.length;
    }
    
    public Neuron getNeuron(int index){
        return neurons[index];
    }
    
    public void calculateNets(Layer previousLayer){
        for (int i = 0; i < neurons.length; ++i)
            neurons[i].calculateNet (previousLayer);
    }
    
    public String toString(){
        String out = "";
        for (int i = 0; i < neurons.length; ++i)
            out += "\t\tNeuron " + i + "\n" + neurons[i].toString() + "\n";
        return out;
    }
}