private static ITrainer CreateParkinsonsTrainer(SigmaEnvironment sigma)
{
IDataset dataset = Defaults.Datasets.Parkinsons();
ITrainer trainer = sigma.CreateTrainer("parkinsons-trainer");
trainer.Network = new Network
{
Architecture = InputLayer.Construct(22)
+ FullyConnectedLayer.Construct(140)
+ FullyConnectedLayer.Construct(20)
+ FullyConnectedLayer.Construct(1)
+ OutputLayer.Construct(1)
+ SquaredDifferenceCostLayer.Construct()
};
trainer.TrainingDataIterator = new MinibatchIterator(10, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new AdagradOptimiser(baseLearningRate: 0.01);
trainer.Operator = new CpuSinglethreadedOperator(new DebugHandler(new CpuFloat32Handler()));
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch)));
trainer.AddHook(new UniClassificationAccuracyReporter("validation", 0.5, TimeStep.Every(1, TimeScale.Epoch)));
return(trainer);
}
private static void SampleParkinsons()
{
SigmaEnvironment sigma = SigmaEnvironment.Create("parkinsons");
IDataset dataset = Defaults.Datasets.Parkinsons();
ITrainer trainer = sigma.CreateGhostTrainer("parkinsons-trainer");
trainer.Network.Architecture = InputLayer.Construct(22)
+ FullyConnectedLayer.Construct(140)
+ FullyConnectedLayer.Construct(20)
+ FullyConnectedLayer.Construct(1)
+ OutputLayer.Construct(1)
+ SquaredDifferenceCostLayer.Construct();
trainer.TrainingDataIterator = new MinibatchIterator(10, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new AdagradOptimiser(baseLearningRate: 0.01);
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch)));
trainer.AddHook(new UniClassificationAccuracyReporter("validation", 0.5, TimeStep.Every(1, TimeScale.Epoch)));
sigma.AddTrainer(trainer);
sigma.PrepareAndRun();
}
private static ITrainer CreateIrisTrainer(SigmaEnvironment sigma)
{
IDataset dataset = Defaults.Datasets.Iris();
ITrainer trainer = sigma.CreateTrainer("iris-trainer");
trainer.Network = new Network();
trainer.Network.Architecture = InputLayer.Construct(4)
+ FullyConnectedLayer.Construct(12)
+ FullyConnectedLayer.Construct(3)
+ OutputLayer.Construct(3)
+ SquaredDifferenceCostLayer.Construct();
//trainer.Network = Serialisation.ReadBinaryFileIfExists("iris.sgnet", trainer.Network);
trainer.TrainingDataIterator = new MinibatchIterator(50, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.06);
trainer.Operator = new CpuSinglethreadedOperator();
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
//trainer.AddGlobalHook(new StopTrainingHook(atEpoch: 100));
//trainer.AddLocalHook(new EarlyStopperHook("optimiser.cost_total", 20, target: ExtremaTarget.Min));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch), reportEpochIteration: true));
//.On(new ExtremaCriteria("optimiser.cost_total", ExtremaTarget.Min)));
//trainer.AddLocalHook(new DiskSaviorHook<INetwork>("network.self", Namers.Dynamic("iris_epoch{0}.sgnet", "epoch"), verbose: true)
// .On(new ExtremaCriteria("optimiser.cost_total", ExtremaTarget.Min)));
trainer.AddHook(new MultiClassificationAccuracyReporter("validation", TimeStep.Every(1, TimeScale.Epoch), tops: 1));
return(trainer);
}
private static void SampleWdbc()
{
SigmaEnvironment sigma = SigmaEnvironment.Create("wdbc");
IDataset dataset = Defaults.Datasets.Wdbc();
ITrainer trainer = sigma.CreateGhostTrainer("wdbc-trainer");
trainer.Network.Architecture = InputLayer.Construct(30)
+ FullyConnectedLayer.Construct(42)
+ FullyConnectedLayer.Construct(24)
+ FullyConnectedLayer.Construct(1)
+ OutputLayer.Construct(1)
+ SquaredDifferenceCostLayer.Construct();
trainer.TrainingDataIterator = new MinibatchIterator(72, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.005);
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch)));
trainer.AddHook(new UniClassificationAccuracyReporter("validation", 0.5, TimeStep.Every(1, TimeScale.Epoch)));
sigma.AddTrainer(trainer);
sigma.AddMonitor(new HttpMonitor("http://+:8080/sigma/"));
sigma.PrepareAndRun();
}
private static void SampleIris()
{
SigmaEnvironment sigma = SigmaEnvironment.Create("iris");
sigma.SetRandomSeed(0);
sigma.Prepare();
IDataset dataset = Defaults.Datasets.Iris();
ITrainer trainer = sigma.CreateGhostTrainer("iris-trainer");
trainer.Network.Architecture = InputLayer.Construct(4)
+ FullyConnectedLayer.Construct(12)
+ FullyConnectedLayer.Construct(3)
+ OutputLayer.Construct(3)
+ SquaredDifferenceCostLayer.Construct();
//trainer.Network = Serialisation.ReadBinaryFileIfExists("iris.sgnet", trainer.Network);
trainer.TrainingDataIterator = new MinibatchIterator(50, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.06);
trainer.Operator = new CudaSinglethreadedOperator();
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
//trainer.AddGlobalHook(new StopTrainingHook(atEpoch: 100));
//trainer.AddLocalHook(new EarlyStopperHook("optimiser.cost_total", 20, target: ExtremaTarget.Min));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch), reportEpochIteration: true));
//.On(new ExtremaCriteria("optimiser.cost_total", ExtremaTarget.Min)));
//trainer.AddLocalHook(new DiskSaviorHook<INetwork>("network.self", Namers.Dynamic("iris_epoch{0}.sgnet", "epoch"), verbose: true)
// .On(new ExtremaCriteria("optimiser.cost_total", ExtremaTarget.Min)));
trainer.AddHook(new MultiClassificationAccuracyReporter("validation", TimeStep.Every(1, TimeScale.Epoch), tops: 1));
trainer.AddHook(new StopTrainingHook(new ThresholdCriteria("shared.classification_accuracy_top1", ComparisonTarget.GreaterThanEquals, 0.98)));
trainer.AddLocalHook(new RunningTimeReporter(TimeStep.Every(599, TimeScale.Iteration), 128));
trainer.AddLocalHook(new RunningTimeReporter(TimeStep.Every(1, TimeScale.Epoch), 4));
//Serialisation.WriteBinaryFile(trainer, "trainer.sgtrainer");
//trainer = Serialisation.ReadBinaryFile<ITrainer>("trainer.sgtrainer");
sigma.AddTrainer(trainer);
sigma.AddMonitor(new HttpMonitor("http://+:8080/sigma/"));
sigma.PrepareAndRun();
}
/// <summary>
/// Create an IRIS trainer that observers the current epoch and iteration
/// </summary>
/// <param name="sigma">The sigma environemnt.</param>
/// <returns>The newly created trainer that can be added to the environemnt.</returns>
private static ITrainer CreateIrisTrainer(SigmaEnvironment sigma)
{
CsvRecordReader irisReader = new CsvRecordReader(new MultiSource(new FileSource("iris.data"), new UrlSource("http://archive.ics.uci.edu/ml/machine-learning-databases/iris/iris.data")));
IRecordExtractor irisExtractor = irisReader.Extractor("inputs", new[] { 0, 3 }, "targets", 4).AddValueMapping(4, "Iris-setosa", "Iris-versicolor", "Iris-virginica");
irisExtractor = irisExtractor.Preprocess(new OneHotPreprocessor(sectionName: "targets", minValue: 0, maxValue: 2));
irisExtractor = irisExtractor.Preprocess(new PerIndexNormalisingPreprocessor(0, 1, "inputs", 0, 4.3, 7.9, 1, 2.0, 4.4, 2, 1.0, 6.9, 3, 0.1, 2.5));
Dataset dataset = new Dataset("iris", Dataset.BlockSizeAuto, irisExtractor);
IDataset trainingDataset = dataset;
IDataset validationDataset = dataset;
ITrainer trainer = sigma.CreateTrainer("test");
trainer.Network = new Network
{
Architecture = InputLayer.Construct(4)
+ FullyConnectedLayer.Construct(10)
+ FullyConnectedLayer.Construct(20)
+ FullyConnectedLayer.Construct(10)
+ FullyConnectedLayer.Construct(3)
+ OutputLayer.Construct(3)
+ SquaredDifferenceCostLayer.Construct()
};
trainer.TrainingDataIterator = new MinibatchIterator(4, trainingDataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(validationDataset));
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.002);
trainer.Operator = new CpuSinglethreadedOperator();
trainer.AddInitialiser("*.weights", new GaussianInitialiser(standardDeviation: 0.4));
trainer.AddInitialiser("*.bias*", new GaussianInitialiser(standardDeviation: 0.01, mean: 0.05));
trainer.AddHook(new ValueReporterHook("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch)));
trainer.AddHook(new ValidationAccuracyReporter("validation", TimeStep.Every(1, TimeScale.Epoch), tops: 1));
trainer.AddLocalHook(new CurrentEpochIterationReporter(TimeStep.Every(1, TimeScale.Epoch)));
return(trainer);
}
private static ITrainer CreateXorTrainer(SigmaEnvironment sigma)
{
RawDataset dataset = new RawDataset("xor");
dataset.AddRecords("inputs", new[] { 0, 0 }, new[] { 0, 1 }, new[] { 1, 0 }, new[] { 1, 1 });
dataset.AddRecords("targets", new[] { 0 }, new[] { 1 }, new[] { 1 }, new[] { 0 });
ITrainer trainer = sigma.CreateTrainer("xor-trainer");
trainer.Network = new Network();
trainer.Network.Architecture = InputLayer.Construct(2) + FullyConnectedLayer.Construct(1) + OutputLayer.Construct(1) + SquaredDifferenceCostLayer.Construct();
trainer.TrainingDataIterator = new UndividedIterator(dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Operator = new CpuSinglethreadedOperator();
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.01);
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.1));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch), reportEpochIteration: true));
trainer.AddLocalHook(new ValueReporter("network.layers.1-fullyconnected._outputs.default.activations", TimeStep.Every(1, TimeScale.Epoch)));
return(trainer);
}
private static void SampleXor()
{
SigmaEnvironment sigma = SigmaEnvironment.Create("logical");
sigma.SetRandomSeed(0);
sigma.Prepare();
RawDataset dataset = new RawDataset("xor");
dataset.AddRecords("inputs", new[] { 0, 0 }, new[] { 0, 1 }, new[] { 1, 0 }, new[] { 1, 1 });
dataset.AddRecords("targets", new[] { 0 }, new[] { 0 }, new[] { 0 }, new[] { 1 });
ITrainer trainer = sigma.CreateTrainer("xor-trainer");
trainer.Network.Architecture = InputLayer.Construct(2) + FullyConnectedLayer.Construct(2) + FullyConnectedLayer.Construct(1) + OutputLayer.Construct(1) + SquaredDifferenceCostLayer.Construct();
trainer.TrainingDataIterator = new MinibatchIterator(1, dataset);
trainer.AddNamedDataIterator("validation", new UndividedIterator(dataset));
trainer.Optimiser = new GradientDescentOptimiser(learningRate: 0.1);
trainer.Operator = new CudaSinglethreadedOperator();
trainer.AddInitialiser("*.*", new GaussianInitialiser(standardDeviation: 0.05));
trainer.AddLocalHook(new StopTrainingHook(atEpoch: 10000));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Epoch), averageValues: true));
trainer.AddLocalHook(new AccumulatedValueReporter("optimiser.cost_total", TimeStep.Every(1, TimeScale.Stop), averageValues: true));
trainer.AddLocalHook(new ValueReporter("network.layers.*<external_output>._outputs.default.activations", TimeStep.Every(1, TimeScale.Stop)));
trainer.AddLocalHook(new ValueReporter("network.layers.*-fullyconnected.weights", TimeStep.Every(1, TimeScale.Stop)));
trainer.AddLocalHook(new ValueReporter("network.layers.*-fullyconnected.biases", TimeStep.Every(1, TimeScale.Stop)));
sigma.Run();
}
