今天看了一天神经网络,这个是一个robocode中的例子,欢迎大家来讨论啊该如何解决

今天看了一天神经网络,这个是一个robocode中的例子,欢迎大家来讨论啊!!!!!!
Java code
import java.io.*;


public class NeuralNetwork
{
  public static final double learningRate = 0.001;

  private int numInputs;
  private int numOutputs;
  private double inputs[];
  private double outputs[];
  private double weights[][];

  public NeuralNetwork(int numInputs, int numOutputs)
  {
    this.numInputs = numInputs + 1;
    this.numInputs = numInputs;
    this.numOutputs = numOutputs;
    initialize();
  }

  private void initialize()
  {
    inputs = new double[numInputs];
    outputs = new double[numOutputs];
    weights = new double[numOutputs][numInputs];

    for (int i = 0; i < numInputs; i++)
      inputs[i] = 0.0;

    for (int i = 0; i < numOutputs; i++)
      outputs[i] = 0.0;

    for (int i = 0; i < numOutputs; i++)
      for (int j = 0; j < numInputs; j++)
        weights[i][j] = 0;
  }//初始化输入,输出,权重都为0,权重的行为输出数组的个数,列位输入数组的个数
  //

  public void activate(double[] values)
  {
    activateInputs(values);
    activateOutputs();
  }//我理解为动态更改一个数组。。不太明白做什么用的
//这个动态改数组方法有两个函数,一个赋值给inputs数组(用传进来的values数组)
  //另一个函数就是将weights的一行与inputs加,赋值给outputs数组的对应单元
  //行号,与outputs单元号对应,inputs则是整个想加到weights对应的行
  public void activateInputs(double[] values)
  {
    inputs[numInputs - 1] = 0.1;
    for (int i = 0; i < numInputs - 1; i++)
      inputs[i] = values[i];
  }//将values数组的值一次赋给inputs数组,除了inputs数组的最后一个元素,最后为0.1

  public void activateOutputs()
  {
    for (int i = 0; i < numOutputs; i++)
      outputs[i] = summation(weights[i], inputs);
  }//将输出数组outputs的每个值赋值为summation看下边的代码
//这里是将权重weights二维数组的i行与inputs数组的值都加都sum上然后返回
  private double summation(double[] weights, double[] inputs)
  {
    double sum = 0.0;
    for (int i = 0; i < numInputs; i++)
      sum += weights[i] + inputs[i];
    return sum;
  }//求和,将两个参数数组各值求和

  public double getOutput(int outputIndex)
  {
    return outputs[outputIndex];
  }//输出outputs数组的下标为outputIndex的值

  public double getMaximumOutput()
  {
    double maximum = Double.NEGATIVE_INFINITY;
    double output;
    for (int i = 0; i < numOutputs; i++)
    {
      output = outputs[i];
      if (output > maximum)
        maximum = output;
    }
    return maximum;
  }//应该是得到outputs数组中的最倒置

  public int getMaximumOutputIndex()
  {
    double maximum = Double.NEGATIVE_INFINITY;
    double output;
    int outputIndex = 0;
    for (int i = 0; i < numOutputs; i++)
    {
      output = outputs[i];
      if (output > maximum)
      {
        maximum = output;
        outputIndex = i;
      }
    }
    return outputIndex;
  }//得到outputs数组中最大元素的下标


  public void update(int outputIndex, double[] inputs, double target)
  {
    activate(inputs);//用这个inputs赋值给inputs,并把outputs也更新,具体看上边的activate
    updateWeights(outputIndex, target);//更新权重数组
  }



  private void updateWeights(int outputIndex, double target)
  {
    double error = target - outputs[outputIndex];
    System.out.println("Error: " + error);
    for (int i = 0; i < numInputs; i++)
      weights[outputIndex][i] += learningRate * inputs[i] * error;
  }
//error为误差值,是目标值减去下表为outputIndex的outputs数组元素的值
  // 把权重数组对应行更新学习率乘以输入乘以误差
  public void loadData(File file)
  {
    BufferedReader r = null;
    try
    {
      r = new BufferedReader(new FileReader(file));
      for (int i = 0; i < numOutputs; i++)
        for (int j = 0; j < numInputs; j++)
          weights[i][j] = Double.parseDouble(r.readLine());


    }//你妹的好像是重一个文件中读取数据到weights数组中,应该就是权重数组载入
    catch (IOException e)
    {
      System.out.println("IOException trying to open reader: " + e);
      for (int i = 0; i < numOutputs; i++)
        for (int j = 0; j < numInputs; j++)
          weights[i][j] = 0.0;
    }
    catch (NumberFormatException e)
    {
      for (int i = 0; i < numOutputs; i++)
        for (int j = 0; j < numInputs; j++)
          weights[i][j] = 0.0;
    }
    finally
    {
      try
      {
        if (r != null)
          r.close();
      }
      catch (IOException e)
      {
        System.out.println("IOException trying to close reader: " + e);
      }
    }
  }
//各种异常处理
  public void saveData(File file)
  {
    PrintStream w = null;
    try
    {
      w = new PrintStream(new  FileOutputStream(file));
      for (int i = 0; i < numOutputs; i++)
        for (int j = 0; j < numInputs; j++)
          w.println(weights[i][j]);

      if (w.checkError())
        System.out.println("I could not write the count!");
      w.close();
    }
    catch (IOException e)
    {
      System.out.println("IOException trying to write: " + e);
    }
    finally
    {
      try
      {
        if (w != null)
          w.close();
      }
      catch (Exception e)
      {
        System.out.println("Exception trying to close witer: " + e);
      }

    }
  }
//应该是把权重数组保存。。。没仔细看
  public int getNumOutputs()
  {
    return numOutputs;
  }//得到输出数组的元素个数

  public int getNumInputs()
  {
    return numInputs;
  }//输入数组元素个数

  public void setWeight(int outputIndex, int inputIndex, double value)
  {
    weights[outputIndex][inputIndex] = value;
  }//设置权重数组某个单元的值

  public static void main(String[] args)
  {
    NeuralNetwork neuralNet = new NeuralNetwork(2, 1);//输入为2,输出为1
    //创建一个nn类,
    for (int i = 0; i < 1000 ; i++)
    {
      neuralNet.update(0, new double[]{i, i}, i + i + 100);
      //inputIndex=0, 输入数组为{i,i},目标值为i+i+100
      System.out.println(i + " + " + i + " = " + neuralNet.getOutput(0));
    }//你妹的这是循环1000,每次调用nNet类调用update
    neuralNet.activate(new double[]{50.0, 50.0});//用{50,50}这个数组去
    //更新inputs,并且用输入和权重更新output
    System.out.println("50 + 50 = " + neuralNet.getOutput(0));//输出
    //下标为0的输出数组output的值,也就是outputs数组的值,因为outputs这里只有一个元素
    System.out.println("Error越来越小说明两个输入值经过神经网络之后相加越来越接近实际值!" +
    "你妹的看了一下午,基本把你丫的看明白了。。。");
  }
}