public static void Main(string[] args)
{
//// inputs
Byte[] inputByte = MyMath.GetRandomBytes(2);
double n = 0.1;
int layersCount = 2;
Layer[] layers = new Layer[layersCount + 1];
layers[0] = new Layer();
layers[0].cellCount = inputByte.Length;
layers[0].output = new double[inputByte.Length];
for (int i = 0; i < inputByte.Length; i++)
{
layers[0].output[i] = inputByte[i] / 255.0;
}
layers[1] = new Layer();
layers[1].cellCount = 3;
layers[1].function = TransferFunction.Linear;
layers[1].bias = MyMath.GetRandomDoubles(layers[1].cellCount);
layers[1].weights = MyMath.GetRandom(layers[0].cellCount, layers[1].cellCount);
layers[2] = new Layer();
layers[2].cellCount = 1;
layers[2].function = TransferFunction.Linear;
layers[2].bias = MyMath.GetRandomDoubles(layers[2].cellCount);
layers[2].weights = MyMath.GetRandom(layers[1].cellCount, layers[2].cellCount);
for (int z = 0; z < 50; z++)
{
//feed forward all
for (int i = 1; i < layers.Length; i++)
{
layers[i].FeedForward(layers[i - 1].output);
}
//backpropagate last layer
int l = layers.Length - 1;
double[] targetOutput = new double[layers[l].cellCount];
//calculate errors
layers[l].errors = new double[layers[l].cellCount];
for (int i = 0; i < targetOutput.Length; i++)
{
layers[l].errors[i] = layers[l].output[i] - targetOutput[i];
}
Console.WriteLine("FeedForward error: " + Math.Round(MyMath.Sum(layers[l].errors), 4));
//calculate weights
ChangeWeights(n, layers, l);
//backpropagate other layers
for (l = layers.Length - 2; l > 0; l--)
{
//calculate errors
layers[l].errors = new double[layers[l].cellCount];
for (int i = 0; i < layers[l].cellCount; i++)
{
for (int j = 0; j < layers[l + 1].cellCount; j++)
{
layers[l].errors[i] = layers[l + 1].errors[j] * layers[l + 1].weights[i, j];
}
}
//calculate weights
ChangeWeights(n, layers, l);
}
}
Console.ReadKey();
}
