mnist-java

自己用java代码写的识别手写数字的全连接的神经网络

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class DeepLearn3Test {
	static List trains = null ;
	static List tests = null;
	public static void main（String[] args） {
		//load mnist
		ReadFile rf1=new ReadFile（“train-labels.idx1-ubyte““train-images.idx3-ubyte“）;
		ReadFile rf2=new ReadFile（“t10k-labels.idx1-ubyte““t10k-images.idx3-ubyte“）;
		try {
			tests = rf2.loadDigitImages（）;
			trains =rf1.loadDigitImages（）;
		} catch （IOException e） {
			// TODO Auto-generated catch block
			e.printStackTrace（）;
		}
		

		int size[]={784402010};
		NeuralNetwork network = new NeuralNetwork（size）;
		network.radomInitWandB（）;
		
		double image[] = new double[784];
		
		for（int kk=0;kk<10;kk++）{
			//first: set input
			for（int count=0;count				for（int i=0;i<784;i++）{
					image[i] = （int）（trains.get（count）.imageData[i]&0xff）;
				}
				network.setInput（image）;
				//second: forward cal output
				double[] output = network.forwardProc（）;
				//third: backward cal delta
				double[] y = new double[10];
				for（int i=0;i					if（i==trains.get（count）.label）{
						y[i] = 1;
					}else{
						y[i] = 0;
					}
				}
				network.backwarkProc（y）;
				//fouth: update w and b
				network.updateWAndB（0.5）;
			}
			System.out.println（“finished train count: “+kk）;
		}


		
		
		boolean isTest = true;
		//test
		if（isTest）{
			int countCorrect=0;
			for（int count=0;count				for（int i=0;i<784;i++）{
					image[i] = （int）（tests.get（count）.imageData[i]&0xff）;
				}
				network.setInput（image）;
				//second: forward cal output
				int number = network.testDigitalImage（）;
				if（number==tests.get（count）.label）countCorrect++;
				//System.out.println（“count is : “+count+“  number is: “+number+“  label is:  “+tests.get（count）.label）;
			}	
			System.out.println（“countCorrect: “+countCorrect）;
		}

	}
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2017-05-19 19:51  DeepLearn3Test\
     文件         301  2017-05-19 09:18  DeepLearn3Test\.classpath
     目录           0  2017-05-20 16:45  DeepLearn3Test\.git\
     文件          25  2017-05-20 16:44  DeepLearn3Test\.git\COMMIT_EDITMSG
     文件         370  2017-05-20 16:45  DeepLearn3Test\.git\config
     文件          73  2017-05-19 16:36  DeepLearn3Test\.git\description
     文件          23  2017-05-19 16:36  DeepLearn3Test\.git\HEAD
     目录           0  2017-05-19 16:36  DeepLearn3Test\.git\hooks\
     文件         478  2017-05-19 16:36  DeepLearn3Test\.git\hooks\applypatch-msg.sample
     文件         896  2017-05-19 16:36  DeepLearn3Test\.git\hooks\commit-msg.sample
     文件         189  2017-05-19 16:36  DeepLearn3Test\.git\hooks\post-update.sample
     文件         424  2017-05-19 16:36  DeepLearn3Test\.git\hooks\pre-applypatch.sample
     文件        1642  2017-05-19 16:36  DeepLearn3Test\.git\hooks\pre-commit.sample
     文件        1348  2017-05-19 16:36  DeepLearn3Test\.git\hooks\pre-push.sample
     文件        4951  2017-05-19 16:36  DeepLearn3Test\.git\hooks\pre-rebase.sample
     文件         544  2017-05-19 16:36  DeepLearn3Test\.git\hooks\pre-receive.sample
     文件        1239  2017-05-19 16:36  DeepLearn3Test\.git\hooks\prepare-commit-msg.sample
     文件        3610  2017-05-19 16:36  DeepLearn3Test\.git\hooks\update.sample
     文件        2309  2017-05-20 16:44  DeepLearn3Test\.git\index
     目录           0  2017-05-19 16:36  DeepLearn3Test\.git\info\
     文件         240  2017-05-19 16:36  DeepLearn3Test\.git\info\exclude
     目录           0  2017-05-19 16:40  DeepLearn3Test\.git\logs\
     文件         476  2017-05-20 16:44  DeepLearn3Test\.git\logs\HEAD
     目录           0  2017-05-19 16:41  DeepLearn3Test\.git\logs\refs\
     目录           0  2017-05-19 16:40  DeepLearn3Test\.git\logs\refs\heads\
     文件         476  2017-05-20 16:44  DeepLearn3Test\.git\logs\refs\heads\master
     目录           0  2017-05-19 16:41  DeepLearn3Test\.git\logs\refs\remotes\
     目录           0  2017-05-19 16:41  DeepLearn3Test\.git\logs\refs\remotes\origin\
     文件         435  2017-05-20 16:45  DeepLearn3Test\.git\logs\refs\remotes\origin\master
     目录           0  2017-05-20 16:44  DeepLearn3Test\.git\objects\
     目录           0  2017-05-20 16:44  DeepLearn3Test\.git\objects\04\
............此处省略112个文件信息