static void Main()
{
Helper.PrintLine(@"神经网络和深度学习-手写数字识别：");
Helper.PrintLine("检查数据文件...");
if (!CheckDataFiles())
{
Exit();
}
Helper.PrintLine("创建神经网络...");
var network = new Network <SigmoidNeuron>(new[] { 784, 15, 10 });
Helper.PrintLine("读取训练数据...");
IDataReader reader = new IDXReader();
var trainImages = reader.ReadMatrixsFlattened(TrainImagesPath).ToArray();
var trainLabels = reader.ReadValues(TrainLabelsPath).Select(value => { var values = Enumerable.Repeat <double>(0.0, 10).Cast <double>().ToArray(); values[value] = 1; return(values); }).ToArray();
Stopwatch stopwatch = new Stopwatch();
Helper.PrintLine("随机梯度下降算法训练神经网络...");
Helper.PrintSplit();
stopwatch.Start();
network.StochasticGradientDescent(
trainImages.Zip(trainLabels),
3, // 30
10,
3.0);
stopwatch.Stop();
Helper.PrintSplit();
Helper.PrintLine($"神经网络训练结束，耗时：{stopwatch.Elapsed.ToString()}");
Exit();
}
public Form1()
{
InitializeComponent();
data = IDXReader.ReadData(Directory.GetCurrentDirectory() + "..\\..\\..\\train-images.idx3-ubyte", Directory.GetCurrentDirectory() + "..\\..\\..\\train-labels.idx1-ubyte");
nn.InitializeWeights();
}
