// Train network using the according settings.
public static void Train(ref NetworkContainer container, ref EncogTrainSettings settings)
{
if (settings.maxTrainingError <= 0)
{
throw new EncogException("Maxtrainingerror should be higher than 0");
}
// Create training data.
IMLDataSet trainingSet = new BasicMLDataSet(settings.dataset, settings.answers);
// Train the neural network.
IMLTrain train = new ResilientPropagation(container.network, trainingSet);
uint epoch = 0;
do
{
train.Iteration();
if (container.verbose)
{
Console.WriteLine("Epoch # " + epoch + " Error: " + train.Error);
}
epoch++;
} while (train.Error > settings.maxTrainingError && (epoch < settings.maxEpochCount || settings.maxEpochCount == 0));
}
// Predict the output of a dataset using an existing network.
public static bool Predict(ref NetworkContainer container, ref CountNetworkPredictSettings settings)
{
if (settings.predictSettings.data == null)
{
throw new IncorrectActionOrderException("Prepare predictor before predicting.");
}
return(EncogWrapper.Predict(ref container, ref settings.predictSettings));
}
public static void SaveNetworkToFS(ref NetworkContainer container, string fileName)
{
try
{
EncogDirectoryPersistence.SaveObject(new FileInfo(fileName), container.network);
}
catch
{
throw new EncogException("Failed to save network to file system.");
}
}
public static void LoadNetworkFromFS(ref NetworkContainer container, string fileName)
{
try
{
container.network = (BasicNetwork)EncogDirectoryPersistence.LoadObject(new FileInfo(fileName));
}
catch
{
throw new EncogException("Failed to load network from file system.");
}
}
public static void FinalizeNetwork(ref NetworkContainer container)
{
try
{
container.network.Structure.FinalizeStructure();
container.network.Reset();
}
catch
{
throw new EncogException("Failed to finalize network.");
}
}
// Predict data using a network.
public static bool Predict(ref NetworkContainer container, ref EncogPredictSettings settings)
{
IMLData output = container.network.Compute(new BasicMLData(settings.data));
if (container.verbose)
{
Console.WriteLine("Raw output: " + output[0]);
}
// Return true or false according to threshold.
return(output[0] >= settings.threshold);
}
// Setup a new network.
public static void Instantiate(ref NetworkContainer container)
{
if (container == null)
{
container = new NetworkContainer();
}
if (container.network != null)
{
throw new IncorrectActionOrderException("Network has already been instantiated.");
}
container.network = new BasicNetwork();
}
public static void PrepareData(ref NetworkContainer container, ref CountNetworkTrainSettings settings)
{
if (settings.trainSettings.dataset != null)
{
throw new IncorrectActionOrderException("This action has already been completed.");
}
TestForErrors(ref settings);
settings.trainSettings = new EncogTrainSettings
{
maxTrainingError = 0.01
};
int correctFileCount = BaseTrainHelper.GetFileCount(settings.correctInputDirectory);
int incorrectFileCount = BaseTrainHelper.GetFileCount(settings.incorrectInputDirectory);
if (correctFileCount <= 0)
{
throw new FileNotFoundException("correctFiles not found.");
}
if (incorrectFileCount <= 0)
{
throw new FileNotFoundException("incorretFiles not found.");
}
settings.trainSettings.dataset = new double[correctFileCount + incorrectFileCount][];
settings.trainSettings.answers = new double[correctFileCount + incorrectFileCount][];
// Compute correct training data.
ComputeData(
settings.sampleCount,
settings.correctInputDirectory,
ref settings.trainSettings.dataset,
ref settings.trainSettings.answers,
1.0,
0);
// Compute incorrect training data.
ComputeData(
settings.sampleCount,
settings.incorrectInputDirectory,
ref settings.trainSettings.dataset,
ref settings.trainSettings.answers,
0.0,
correctFileCount);
}
// Prepare input data for prediction.
public static void PreparePredictor(ref NetworkContainer container, ref ImageNetworkPredictSettings settings)
{
TestForErrors(ref settings);
EncogWrapper.LoadNetworkFromFS(ref container, settings.trainedNetwork);
List <ICSVFilter> baseFilters = new List <ICSVFilter>(1);
ICSVFilter quaternions = new CSVEvenColumnFilter();
baseFilters.Add(quaternions);
// Setup loader.
CSVLoaderSettings CSVSettings = new CSVLoaderSettings
{
filePath = settings.predictData,
trimUp = 1,
trimDown = 0,
filters = baseFilters
};
var data = CSVLoader <Vector3> .LoadData(ref CSVSettings);
// Initialize image Transformer.
ImageTransformerSettings imageSettings = new ImageTransformerSettings
{
focusJoints = (LeapMotionJoint[])Enum.GetValues(typeof(LeapMotionJoint)),
samples = data,
size = settings.imgSize
};
ImageTransformer imageTransformer = new ImageTransformer();
if (settings.predictSettings.threshold.Equals(null))
{
settings.predictSettings = new EncogPredictSettings
{
threshold = 0.9
};
}
settings.predictSettings.data = imageTransformer.GetNeuralInput(imageSettings);
if (settings.predictSettings.data.Length != container.network.InputCount)
{
throw new NoNetworkMatchException("Sample count doesn't match network input count.");
}
}
public static void PreparePredictor(ref NetworkContainer container, ref CountNetworkPredictSettings settings)
{
TestForErrors(ref settings);
EncogWrapper.LoadNetworkFromFS(ref container, settings.trainedNetwork);
List <ICSVFilter> baseFilters = new List <ICSVFilter>(1);
ICSVFilter quaternions = new CSVEvenColumnFilter();
baseFilters.Add(quaternions);
// Setup loader.
CSVLoaderSettings CSVSettings = new CSVLoaderSettings
{
filePath = settings.predictData,
trimUp = 1,
trimDown = 0,
filters = baseFilters
};
var data = CSVLoader <Vector3> .LoadData(ref CSVSettings);
// Initialize CountBased Transformer settings.
IntervalBasedTransformerSettings countSettings = new IntervalBasedTransformerSettings
{
sampleList = data,
count = settings.sampleCount
};
CountBasedTransformer countTransformer = new CountBasedTransformer();
if (settings.predictSettings.threshold.Equals(null))
{
settings.predictSettings = new EncogPredictSettings
{
threshold = 0.9
};
}
settings.predictSettings.data = countTransformer.GetNeuralInput(countSettings);
if (settings.predictSettings.data.Length != container.network.InputCount)
{
throw new NoNetworkMatchException("Sample count doesn't match network input count.");
}
}
// Add a custom layer to the network.
public static void AddLayer(ref NetworkContainer container, ref EncogLayerSettings settings)
{
if (settings.neuronCount <= 0)
{
throw new InvalidNeuronCountException("Neuroncount should be higher than 0.");
}
try
{
container.network.AddLayer(new BasicLayer(
settings.activationFunction,
settings.hasBias,
settings.neuronCount));
}
catch
{
throw new EncogException("Adding layer failed.");
}
}
public static void Train(ref NetworkContainer container, ref CountNetworkTrainSettings settings)
{
if (settings.trainSettings.dataset == null)
{
throw new IncorrectActionOrderException("Prepare data before training network.");
}
if (container == null)
{
throw new IncorrectActionOrderException("Prepare network before training network.");
}
EncogWrapper.Train(ref container, ref settings.trainSettings);
if (settings.outputDirectory[settings.outputDirectory.Length - 1].Equals("/"))
{
EncogWrapper.SaveNetworkToFS(ref container, settings.outputDirectory + settings.outputName + ".eg");
return;
}
EncogWrapper.SaveNetworkToFS(ref container, settings.outputDirectory + "/" + settings.outputName + ".eg");
}
// Prepare network for training, this is mainly setting up the layers and activation functions.
public static void PrepareNetwork(ref NetworkContainer container, ref ImageNetworkTrainSettings settings)
{
if (settings.trainSettings.dataset == null)
{
throw new IncorrectActionOrderException("Prepare data before preparing network.");
}
EncogWrapper.Instantiate(ref container);
EncogLayerSettings inputLayerSettings = new EncogLayerSettings
{
activationFunction = null,
hasBias = true,
neuronCount = settings.trainSettings.dataset[0].Length
};
EncogWrapper.AddLayer(ref container, ref inputLayerSettings);
EncogLayerSettings hiddenLayerOneSettings = new EncogLayerSettings
{
activationFunction = new ActivationElliott(),
hasBias = true,
neuronCount = 100
};
EncogWrapper.AddLayer(ref container, ref hiddenLayerOneSettings);
EncogLayerSettings outputLayerSettings = new EncogLayerSettings
{
activationFunction = new ActivationElliott(),
hasBias = false,
neuronCount = 1
};
EncogWrapper.AddLayer(ref container, ref outputLayerSettings);
EncogWrapper.FinalizeNetwork(ref container);
}
