public void Construction()
{
var factory = StandardRng.GetFactory();
var rng = factory.Create();
Assert.True(Statistics.TestMonobitFrequency32(rng, 100_000, Statistics.WideZScore));
Assert.True(Statistics.TestMonobitFrequency64(rng, 100_000, Statistics.WideZScore));
Assert.True(Statistics.TestMonobitFrequencyFill(rng, 100_000, Statistics.WideZScore));
}
public BackgroundSource()
{
_rng = RandomShim.Create(StandardRng.Create());
if (DateTime.Now.Month == 12)
{
_backgrounds.Add("Assets/backgrounds/christmas.jpg");
_backgrounds.Add("Assets/backgrounds/christmas2.png");
_backgrounds.Add("Assets/backgrounds/christmas3.jpg");
_backgrounds.Add("Assets/backgrounds/christmasEve.jpg");
_backgrounds.Add("Assets/backgrounds/IceQueen.png");
_backgrounds.Add("Assets/backgrounds/imp.png");
}
else if (DateTime.Now.Month == 10)
{
_backgrounds.Add("Assets/backgrounds/sorceress.png");
_backgrounds.Add("Assets/backgrounds/halloween.jpg");
_backgrounds.Add("Assets/backgrounds/halloween2.png");
_backgrounds.Add("Assets/backgrounds/halloween3.png");
_backgrounds.Add("Assets/backgrounds/halloween4.jpg");
_backgrounds.Add("Assets/backgrounds/halloween5.png");
_backgrounds.Add("Assets/backgrounds/halloween6.png");
_backgrounds.Add("Assets/backgrounds/halloween7.png");
_backgrounds.Add("Assets/backgrounds/halloween8.png");
}
else
{
_backgrounds.Add("Assets/backgrounds/original.png");
_backgrounds.Add("Assets/backgrounds/citiesInTheSky.png");
_backgrounds.Add("Assets/backgrounds/deer.jpg");
_backgrounds.Add("Assets/backgrounds/deer2.jpg");
_backgrounds.Add("Assets/backgrounds/diceTable.jpg");
_backgrounds.Add("Assets/backgrounds/dwarfHouse.jpg");
_backgrounds.Add("Assets/backgrounds/faery.png");
_backgrounds.Add("Assets/backgrounds/forest.png");
_backgrounds.Add("Assets/backgrounds/forest2.jpg");
_backgrounds.Add("Assets/backgrounds/LotsOfDices.png");
_backgrounds.Add("Assets/backgrounds/merchant.jpg");
_backgrounds.Add("Assets/backgrounds/original.png");
_backgrounds.Add("Assets/backgrounds/sword.png");
_backgrounds.Add("Assets/backgrounds/unicorn.png");
_backgrounds.Add("Assets/backgrounds/warrior.jpg");
}
}
/// <summary>
/// Runs this instance.
/// </summary>
private void Run()
{
const int width = 64;
const int height = 64;
const int count = width * height;
const int totalIterations = 500;
double baseRadius = Math.Sqrt(count) * 0.3;
// prepare generator and randomized data set
var generator = new StandardRng();
var dataSetProvider = new DiscreteRandomRgbDataSetProvider(generator, 5);
var dataSet = dataSetProvider.ProvideDataSet();
// prepare factories
var gridFactory = new Grid2DFactory(generator);
var neuronFactory = new RandomWeightGenerator(3);
// prepare the metric
var metric = new EuclideanDistance();
var bmuFinder = new BmuFinder(metric);
// prepare the grid
var grid = gridFactory.CreateGrid(width, height, neuronFactory);
grid.IsToroidal = false;
// prepare adjustment functions
var radiusFunction = new RadiusExponentialShrink()
{
TotalIterations = totalIterations,
StartRadius = baseRadius,
EndRadius = 1
};
var neighborhoodFunction = new GaussianNeighborhood();
var learningRateFunction = new LearningRateExponentialShrink()
{
TotalIterations = totalIterations,
StartRate = 1,
EndRate = 0.001,
};
var weightAdjustment = new WeightAdjustment(radiusFunction, neighborhoodFunction, learningRateFunction);
// iterate
for (int i = 0; i < totalIterations; ++i)
{
// pick a datum and find the best matching unit on the grid
var picked = dataSet.PickRandom(generator);
var bmu = bmuFinder.FindBestMatchingUnit(grid, picked);
// adjust all other neurons
var trainingVectorWeights = picked.MapToWeights();
foreach (var gridNeuron in grid)
{
// calculate the distance on the grid
var distanceToBmu = grid.CalculateDistance(metric, bmu, gridNeuron);
// calculate the new weights
var currentWeights = gridNeuron.Neuron.Weights;
var newWeights = weightAdjustment.CalculateNewWeights(i, trainingVectorWeights, currentWeights, distanceToBmu);
// update the neuron with the new weights
gridNeuron.Neuron.UpdateWeights(newWeights);
}
}
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
var form = new Main();
form.SetGrid(grid);
form.SetData(dataSet);
Application.Run(form);
}
