public Network(string InputFileName, int _MiniBatchSize, string[] _ListOfFilenames, bool MNIST)//ConvNet with binarized, labelled image-dataset
{
L2_reg = 0.01;
IsMNIST = MNIST;
if (!MNIST)
{
NoOfImages = 10000;//"images per fileName-location" (data_batch_1,data_batch_2,data_batch_3,data_batch_4,data_batch_5,test_batch contain each 10000 images)
MiniBatchSize = _MiniBatchSize;
ListOfFilenames = _ListOfFilenames;
CostFunction = CostFunction.CrossEntropy;
Bl = new ImageLoader.BinLoader(InputFileName, MiniBatchSize);
Labels = Bl.GetLabels(0);
Add(new InputLayer(Bl.GetZ_3D(0), MiniBatchSize));
//long trained network
//Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 5, 2, 10, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.01 / MiniBatchSize, 1));
//Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 5, 3, 16, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.01 / MiniBatchSize, 1));
//Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 3, 1, 16, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.01 / MiniBatchSize, 1));
//Add(new HiddenLayer(this[Count - 1].Z, 120, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.1 / MiniBatchSize, 1));
//Add(new HiddenLayer(this[Count - 1].Z, 84, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.1 / MiniBatchSize, 1));
//Add(new OutputLayer(this[Count - 1].Z, Labels.GetLength(1), MiniBatchSize, ActivationFunction.SoftMax, WeightInitialization.Random, TrainAlgorithm.Adam, 0.00001 * MiniBatchSize, 0.01 / MiniBatchSize, 1));
Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 3, 1, 10, MiniBatchSize, ActivationFunction.lReLu, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.SGD, 0.00001 * MiniBatchSize, L2_reg, 1));
Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 5, 2, 24, MiniBatchSize, ActivationFunction.lReLu, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.SGD, 0.00001 * MiniBatchSize, L2_reg, 1));
Add(new HiddenLayer(this[Count - 1].Z, 120, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.SGD, 0.00001 * MiniBatchSize, L2_reg, 1));
Add(new HiddenLayer(this[Count - 1].Z, 84, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.SGD, 0.00001 * MiniBatchSize, L2_reg, 1));
Add(new OutputLayer(this[Count - 1].Z, Labels.GetLength(1), MiniBatchSize, ActivationFunction.SoftMax, WeightInitialization.Random, TrainAlgorithm.SGD, 0.00001 * MiniBatchSize, L2_reg, 1));
}
else//if MNIST-Data
{
ListOfFilenames = _ListOfFilenames;
NoOfImages = 60000;//"images per fileName-location"(t10k-images.idx3-ubyte contains 60000 images)
MiniBatchSize = _MiniBatchSize;
CostFunction = CostFunction.CrossEntropy;
MNIST_Load = new ImageLoader.MNIST_Loader(ListOfFilenames, MiniBatchSize, true);
Labels = MNIST_Load.GetLabels(0);
Add(new InputLayer(MNIST_Load.GetZ_3D(0), MiniBatchSize));
Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 3, 1, 6, MiniBatchSize, ActivationFunction.lReLu, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.SGD, 0.0001 * MiniBatchSize, L2_reg, 1));
Add(new ConvolutionalLayer(this[Count - 1].Z_3D, 3, 2, 16, MiniBatchSize, ActivationFunction.lReLu, WeightInitialization.NormalizedGaussianRandom, TrainAlgorithm.SGD, 0.0001 * MiniBatchSize, L2_reg, 1));
Add(new HiddenLayer(this[Count - 1].Z, 120, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.SGD, 0.0001 * MiniBatchSize, L2_reg, 1));
Add(new HiddenLayer(this[Count - 1].Z, 84, MiniBatchSize, ActivationFunction.Sigmoid, WeightInitialization.Random, TrainAlgorithm.SGD, 0.0001 * MiniBatchSize, L2_reg, 1));
Add(new OutputLayer(this[Count - 1].Z, Labels.GetLength(1), MiniBatchSize, ActivationFunction.SoftMax, WeightInitialization.Random, TrainAlgorithm.SGD, 0.0001 * MiniBatchSize, L2_reg, 1));
}
}
public void TestNetwork()
{
L2_reg_Temp = 0;
if (!IsMNIST)
{
int correct_Estimations = 0;
//load test images
Bl = new ImageLoader.BinLoader(ListOfFilenames[5], MiniBatchSize); //ListOfFilenames[5] are test images
for (int b = 0; b < 10000 / MiniBatchSize; b++) //10000 num of Test Pictures
{
Labels = Bl.GetLabels(b);
this[0].Z_3D = Bl.GetZ_3D(b);
Activate();
for (int i = 0; i < this[this.Count - 1].Z.GetLength(0); i++)// this[this.Count - 1] = OutputLayer || Dimension[0] is MiniBatchSite
{
int IndexOfEstimatedNumber = 0;
double maxOutputval = 0;
int IndexOfCorrectLabel = 0;
int tempLapel = 0;
//get index of output-value with highest probability
for (int j = 0; j < this[this.Count - 1].Z.GetLength(1); j++)// this[this.Count - 1] = OutputLayer || Dimension[1] are Labels
{
if (this[this.Count - 1].Z[i, j] > maxOutputval)
{
maxOutputval = this[this.Count - 1].Z[i, j];
IndexOfEstimatedNumber = j;
}
if (Labels[i, j] > tempLapel)
{
tempLapel = (int)Labels[i, j];
IndexOfCorrectLabel = j;
}
}
if (IndexOfEstimatedNumber == IndexOfCorrectLabel)
{
correct_Estimations++;
}
}
OnNetAccuracyEvent((double)correct_Estimations / ((double)((b + 1) * MiniBatchSize)));
}
Bl = new ImageLoader.BinLoader(ListOfFilenames[EpocheMiniBatchCounter], MiniBatchSize);
}
else
{
int correct_Estimations = 0;
//load test images
MNIST_Load = new ImageLoader.MNIST_Loader(ListOfFilenames, MiniBatchSize, false);
for (int b = 0; b < 10000 / MiniBatchSize; b++)//10000 num of Test Pictures
{
Labels = MNIST_Load.GetLabels(b);
this[0].Z_3D = MNIST_Load.GetZ_3D(b);
Activate();
for (int i = 0; i < this[this.Count - 1].Z.GetLength(0); i++)// this[this.Count - 1] = OutputLayer || Dimension[0] is MiniBatchSite
{
int IndexOfEstimatedNumber = 0;
double maxOutputval = 0;
int IndexOfCorrectLabel = 0;
int tempLapel = 0;
//get index of output-value with highest probability
for (int j = 0; j < this[this.Count - 1].Z.GetLength(1); j++)// this[this.Count - 1] = OutputLayer || Dimension[1] are Labels
{
if (this[this.Count - 1].Z[i, j] > maxOutputval)
{
maxOutputval = this[this.Count - 1].Z[i, j];
IndexOfEstimatedNumber = j;
}
if (Labels[i, j] > tempLapel)
{
tempLapel = (int)Labels[i, j];
IndexOfCorrectLabel = j;
}
}
if (IndexOfEstimatedNumber == IndexOfCorrectLabel)
{
correct_Estimations++;
}
}
OnNetAccuracyEvent((double)correct_Estimations / ((double)((b + 1) * MiniBatchSize)));
}
//load again TrainImages
MNIST_Load = new ImageLoader.MNIST_Loader(ListOfFilenames, MiniBatchSize, true);
}
L2_reg_Temp = L2_reg;
}
public double Train()
{
if (!IsMNIST)
{
//int how_Mane_Epoches_per_Minibatch = 1;//if 1, it changes minibatch on each epoche
if (epoche % (NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) == 0 && epoche > 0)
{
if (EpocheMiniBatchCounter == 5)//ListOfFilenames[0] to ListOfFilenames[4] are training images, ListOfFilenames[5] are test images
{
EpocheMiniBatchCounter = 0;
}
//Bl = new ImageLoader.BinLoader(ListOfFilenames[EpocheMiniBatchCounter], MiniBatchSize);//is replaced at the end of the TestNetwork-Method
EpocheMiniBatchCounter++;
BatchCounter++;
OnBadgeErrorEvent(accumulatedError / (NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch));
accumulatedError = 0;
OnSaveWeightsEvent();
TestNetwork();
}
if (Bl != null)
{
//change MiniBatch all "how_Mane_Epoches_per_Minibatch" Epoches
if (epoche % how_Mane_Epoches_per_Minibatch == 0)
{
Labels = Bl.GetLabels((epoche - BatchCounter * NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) / how_Mane_Epoches_per_Minibatch);
this[0].Z_3D = Bl.GetZ_3D((epoche - BatchCounter * NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) / how_Mane_Epoches_per_Minibatch);
}
}
//für jeden neuen Durchgang (aufgerufen aus MainWindwo.xmal per TrainNetwork()) wird der fehler auf 0 gesetzt
Activate();
double error = BackProp();
UpdateWeights();
epoche++;
//OnBadgeErrorEvent(error);
//accumulatedError = 0;
accumulatedError += error;
return(error);
}
else//if MNIST-Data
{
//int how_Mane_Epoches_per_Minibatch = 1;//if 1, it changes minibatch on each epoche
if (epoche % (NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) == 0 && epoche > 0)
{
BatchCounter++;
OnBadgeErrorEvent(accumulatedError / (NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch));
accumulatedError = 0;
OnSaveWeightsEvent();
TestNetwork();
}
if (MNIST_Load != null)
{
//change MiniBatch all "how_Mane_Epoches_per_Minibatch" Epoches
if (epoche % how_Mane_Epoches_per_Minibatch == 0)
{
Labels = MNIST_Load.GetLabels((epoche - BatchCounter * NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) / how_Mane_Epoches_per_Minibatch);
this[0].Z_3D = MNIST_Load.GetZ_3D((epoche - BatchCounter * NoOfImages / MiniBatchSize * how_Mane_Epoches_per_Minibatch) / how_Mane_Epoches_per_Minibatch);
}
}
//für jeden neuen Durchgang (aufgerufen aus MainWindwo.xmal per TrainNetwork()) wird der fehler auf 0 gesetzt
Activate();
double error = BackProp();
UpdateWeights();
epoche++;
//OnBadgeErrorEvent(error);
//accumulatedError = 0;
accumulatedError += error;
return(error);
}
}
