private void saveToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
if (currentProject == null)
{
MessageBox.Show("No network loaded.", "Invalid Operation", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
this.Cursor = Cursors.WaitCursor;
EnableControls(false, true);
SaveScreenParametersToCurrentNetwork();
NnProject.Save(currentProject, "");
this.Cursor = Cursors.Default;
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show("Error saving network - " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
EnableControls(true, true);
}
}
private void loadToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
OpenFileDialog ofd = new OpenFileDialog();
ofd.CheckFileExists = true;
ofd.CheckPathExists = true;
ofd.ShowDialog();
if (ofd.FileName.Length > 0)
{
this.Cursor = Cursors.WaitCursor;
EnableControls(false, true);
currentProject = NnProject.Load(ofd.FileName);
this.Text = currentProject.SaveFolder + @"\" + currentProject.ProjectName;
RefreshScreenForCurrentNetWork();
this.Cursor = Cursors.Default;
EnableControls(true, true);
}
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show("Error loading network - " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
EnableControls(true, true);
}
}
public static NnProject Load(string path)
{
NnProject nnProject = new NnProject();
nnProject.SaveFolder = System.IO.Path.GetDirectoryName(path);
nnProject.ProjectName = System.IO.Path.GetFileName(path);
nnProject.ProjectName = nnProject.ProjectName.Remove(nnProject.ProjectName.IndexOf('.'));
// 加载网络
string path2 = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".ndn");
nnProject.Network = (BackpropagationNetwork)LoadNeuralNetwork(path2);
// 加载数据集
path2 = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".trn");
nnProject.TrainingSet = LoadTrainingSet(path2);
path2 = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".crv");
if (File.Exists(path2))
{
nnProject.CrossValidationSet = LoadTrainingSet(path2);
}
// 保存学习参数
path2 = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".xml");
nnProject.LearningParameters = NnLearningParameters.Deserialize(path2);
return(nnProject);
}
public static void Save(NnProject nnProject, string saveFolder)
{
// 使用默认或传递的文件夹？
if (saveFolder.Length > 0)
{
nnProject.SaveFolder = saveFolder;
}
// 保存网络
string path = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".ndn");
SaveNeuralNetwork(nnProject.Network, path);
// 保存数据集
path = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".trn");
SaveTrainingSet(nnProject.TrainingSet, path);
if (nnProject.CrossValidationSet != null)
{
path = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".crv");
SaveTrainingSet(nnProject.CrossValidationSet, path);
}
// 保存学习参数
path = System.IO.Path.Combine(nnProject.SaveFolder, nnProject.ProjectName + ".xml");
NnLearningParameters.Serialize(path, nnProject.LearningParameters);
}
private void buttonExit_Click(object sender, EventArgs e)
{
if (currentProject != null)
{
DialogResult dr = MessageBox.Show("Save current network?", "Save", MessageBoxButtons.YesNoCancel, MessageBoxIcon.Question);
if (dr == DialogResult.Cancel)
{
return;
}
if (dr == DialogResult.Yes)
{
NnProject.Save(currentProject, "");
}
}
this.Close();
}
private void newToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
formCreateNew createNewForm = new formCreateNew();
createNewForm.ShowDialog(this);
if (createNewForm.NewProject != null)
{
currentProject = createNewForm.NewProject;
this.Text = currentProject.SaveFolder + @"\" + currentProject.ProjectName;
RefreshScreenForCurrentNetWork();
}
}
catch (Exception ex)
{
MessageBox.Show("Error in program - " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
private void saveAsToolStripMenuItem_Click(object sender, EventArgs e)
{
try
{
if (currentProject == null)
{
MessageBox.Show("No network loaded.", "Invalid Operation", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
SaveFileDialog sfd = new SaveFileDialog();
sfd.AddExtension = false;
sfd.CheckFileExists = false;
sfd.CheckPathExists = false;
sfd.ValidateNames = false;
//sfd.DefaultExt = "Network files (*.ndn)|*.ndn";
sfd.CreatePrompt = false;
sfd.OverwritePrompt = true;
sfd.SupportMultiDottedExtensions = false;
sfd.ShowDialog(this);
if (sfd.FileName.Length > 0)
{
this.Cursor = Cursors.WaitCursor;
EnableControls(false, true);
currentProject.ProjectName = System.IO.Path.GetFileName(sfd.FileName);
if (currentProject.ProjectName.Contains("."))
{
currentProject.ProjectName = currentProject.ProjectName.Remove(currentProject.ProjectName.IndexOf('.'));
}
NnProject.Save(currentProject, System.IO.Path.GetDirectoryName(sfd.FileName));
this.Text = currentProject.SaveFolder + @"\" + currentProject.ProjectName;
RefreshScreenForCurrentNetWork();
this.Cursor = Cursors.Default;
}
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show("Error saving network - " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{
EnableControls(true, true);
}
}
private void buttonOK_Click(object sender, EventArgs e)
{
this.Cursor = Cursors.WaitCursor;
try
{
//
// 解析数据文件
//
int inputCount = 0;
int outputCount = 1;
if (textInputCount.Text.Length > 0)
{
inputCount = int.Parse(textInputCount.Text);
}
if (textOutputCount.Text.Length > 0)
{
outputCount = int.Parse(textOutputCount.Text);
}
TrainingSet trainingSet = DataFile.CsvFileToTrainingSet(textTrainingSet.Text, ref inputCount, ref outputCount);
TrainingSet crossvalidSet = null;
if (textCvSet.Text.Length > 0)
{
crossvalidSet = DataFile.CsvFileToTrainingSet(textCvSet.Text, ref inputCount, ref outputCount);
}
//
// 创建新网络
//
// 输入层始终与输入计数是线性关系
LinearLayer inputLayer = new LinearLayer(inputCount);
// 创建隐层
ActivationLayer hiddenLayer1 = null;
ActivationLayer hiddenLayer2 = null;
ActivationLayer outputLayer = null;
if (comboActFunction1.SelectedIndex < 0)
{
MessageBox.Show("请选择激活函数！"); return;
}
switch ((HiddenLayerType)comboActFunction1.SelectedItem)
{
case HiddenLayerType.Linear: hiddenLayer1 = new LinearLayer(int.Parse(textNeuronCount1.Text)); break;
case HiddenLayerType.Logarithmic: hiddenLayer1 = new LogarithmLayer(int.Parse(textNeuronCount1.Text)); break;
case HiddenLayerType.Sigmoid: hiddenLayer1 = new SigmoidLayer(int.Parse(textNeuronCount1.Text)); break;
case HiddenLayerType.Sine: hiddenLayer1 = new SineLayer(int.Parse(textNeuronCount1.Text)); break;
case HiddenLayerType.Tanh: hiddenLayer1 = new TanhLayer(int.Parse(textNeuronCount1.Text)); break;
}
if (textNeuronCount2.Text.Length > 0 && int.Parse(textNeuronCount2.Text) > 0)
{
switch ((HiddenLayerType)comboActFunction2.SelectedItem)
{
case HiddenLayerType.Linear: hiddenLayer2 = new LinearLayer(int.Parse(textNeuronCount2.Text)); break;
case HiddenLayerType.Logarithmic: hiddenLayer2 = new LogarithmLayer(int.Parse(textNeuronCount2.Text)); break;
case HiddenLayerType.Sigmoid: hiddenLayer2 = new SigmoidLayer(int.Parse(textNeuronCount2.Text)); break;
case HiddenLayerType.Sine: hiddenLayer2 = new SineLayer(int.Parse(textNeuronCount2.Text)); break;
case HiddenLayerType.Tanh: hiddenLayer2 = new TanhLayer(int.Parse(textNeuronCount2.Text)); break;
}
}
if (comboOutputFunction.SelectedIndex < 0)
{
MessageBox.Show("请选择输出函数！"); return;
}
switch ((HiddenLayerType)comboOutputFunction.SelectedItem)
{
case HiddenLayerType.Linear: outputLayer = new LinearLayer(outputCount); break;
case HiddenLayerType.Logarithmic: outputLayer = new LogarithmLayer(outputCount); break;
case HiddenLayerType.Sigmoid: outputLayer = new SigmoidLayer(outputCount); break;
case HiddenLayerType.Sine: outputLayer = new SineLayer(outputCount); break;
case HiddenLayerType.Tanh: outputLayer = new TanhLayer(outputCount); break;
}
// 连接层, hidden2是可选的
new BackpropagationConnector(inputLayer, hiddenLayer1);
if (hiddenLayer2 != null)
{
new BackpropagationConnector(hiddenLayer1, hiddenLayer2);
new BackpropagationConnector(hiddenLayer2, outputLayer);
}
else
{
new BackpropagationConnector(hiddenLayer1, outputLayer);
}
BackpropagationNetwork backpropNetwork = new BackpropagationNetwork(inputLayer, outputLayer);
//
// 设置学习和退出参数
//
double startLearningRate = double.Parse(textStartLearningRate.Text);
double?finalLearningRate = null;
if (textFinalLearningRate.Text.Length > 0)
{
finalLearningRate = double.Parse(textFinalLearningRate.Text);
}
// 如果选择了学习率函数则使用
LearningRateFunction?lrf = null;
if (comboLRFunction.SelectedIndex > 0)
{
lrf = (LearningRateFunction)comboLRFunction.SelectedItem;
backpropNetwork.SetLearningRate(
LearningRateFactory.GetLearningRateFunction(lrf.Value, startLearningRate, finalLearningRate.Value));
}
else
{
// 否则使用普通学习率，也许有起点和终点
if (finalLearningRate.HasValue)
{
backpropNetwork.SetLearningRate(startLearningRate, finalLearningRate.Value);
}
else
{
backpropNetwork.SetLearningRate(startLearningRate);
}
}
// 如果给定，在连接器中设置动量
double?momentum = null;
if (textMomentum.Text.Length > 0)
{
momentum = double.Parse(textMomentum.Text);
foreach (ILayer layer in backpropNetwork.Layers)
{
foreach (BackpropagationConnector conn in layer.SourceConnectors)
{
conn.Momentum = momentum.Value;
}
foreach (BackpropagationConnector conn in layer.TargetConnectors)
{
conn.Momentum = momentum.Value;
}
}
}
//
// 新建工程和保存工程
//
int tmpInt;
NewProject = new NnProject();
NewProject.Network = backpropNetwork;
// 确保为新网络初始化权重，默认情况下新的训练周期将不会初始化
NewProject.Network.Initialize();
NewProject.ProjectName = textProjectName.Text.Trim();
NewProject.SaveFolder = textSaveFolder.Text;
NewProject.TrainingSet = trainingSet;
NewProject.CrossValidationSet = crossvalidSet;
NewProject.LearningParameters = new NnProject.NnLearningParameters();
NewProject.LearningParameters.InitialLearningRate = startLearningRate;
NewProject.LearningParameters.FinalLearningRate = finalLearningRate;
NewProject.LearningParameters.LearningRateFunction = lrf;
NewProject.LearningParameters.Momentum = momentum;
if (int.TryParse(textTrainingCycles.Text, out tmpInt))
{
NewProject.LearningParameters.MaxTrainingCycles = tmpInt;
}
NnProject.Save(NewProject, textSaveFolder.Text);
this.Close();
}
catch (Exception ex)
{
this.Cursor = Cursors.Default;
MessageBox.Show("Error creating network - " + ex.Message, "Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
finally
{ this.Cursor = Cursors.Default; }
}
