void Clustering()
{
pca = new PrincipalComponentAnalysis();
//pca
pca.Learn(inputImgArray.ToArray());
var pcaRes = pca.Transform(inputImgArray.ToArray());
dn = new DistanceNetwork(pcaRes[0].Length, mainForm.closestSquareNumber(totalData));
som = new SOMLearning(dn);
Console.WriteLine("Learning");
for (var i = 0; i < maxEpoch; i++)
{
var error = som.RunEpoch(pcaRes);
if (error < errorGoal)
{
break;
}
if (i % 10 == 0)
{
Console.WriteLine($"Report Cluster error {i} : {error}");
}
}
dn.Save(savedDNNetwork);
}
static void GenerateReport(Maze maze, List <Triplet> triplets, DistanceNetwork network)
{
foreach (Triplet t in triplets)
{
double[] x0 = OneHot(t.x0, maze.StatesCount, 1.0);
double[] g = OneHot(t.g, maze.StatesCount, 1.0);
double[] x1 = new double[maze.StatesCount]; //empty
double[] input = x0.Concat(g).ToArray().Concat(x1).ToArray();
double[] output = network.Compute(input);
int maxIndex = maze.StatesCount * 2;
for (int i = 0; i < maze.StatesCount; i++)
{
if (output[maze.StatesCount * 2 + i] > output[maxIndex])
{
maxIndex = maze.StatesCount * 2 + i;
}
}
if (maxIndex != t.x1)
{
Console.WriteLine("Post training error on " + t.ToString());
Console.WriteLine("Predicted " + maxIndex + "(" + output[maxIndex].ToString("N2") + ")");
}
}
}
void SearchSolution()
{
// create network
DistanceNetwork network = new DistanceNetwork(2, neurons);
// set random generators range
foreach (var neuron in network.Layers.SelectMany(layer => layer?.Neurons).Where(neuron => neuron != null))
{
neuron.RandGenerator = new UniformContinuousDistribution(new Range(0, 1000));
}
// create learning algorithm
ElasticNetworkLearning trainer = new ElasticNetworkLearning(network);
double fixedLearningRate = learningRate / 20;
double driftingLearningRate = fixedLearningRate * 19;
double[,] path = new double[neurons + 1, 2];
double[] input = new double[2];
int i = 0;
while (!needToStop)
{
// update learning speed & radius
trainer.LearningRate = driftingLearningRate * (iterations - i) / iterations + fixedLearningRate;
trainer.LearningRadius = learningRadius * (iterations - i) / iterations;
// set network input
int currentCity = rand.Next(citiesCount);
input[0] = map[currentCity, 0];
input[1] = map[currentCity, 1];
// run one training iteration
trainer.Run(input);
// show current path
for (int j = 0; j < neurons; j++)
{
path[j, 0] = network.Layers[0].Neurons[j].Weights[0];
path[j, 1] = network.Layers[0].Neurons[j].Weights[1];
}
path[neurons, 0] = network.Layers[0].Neurons[0].Weights[0];
path[neurons, 1] = network.Layers[0].Neurons[0].Weights[1];
chart.UpdateDataSeries("path", path);
i++;
SetText(currentIterationBox, i.ToString());
if (i >= iterations)
{
break;
}
}
// enable settings controls
EnableControls(true);
}
public void somTraining()
{
double[][] input_data = new double[Data.instance.images.Count][];
for (int i = 0; i < images.Count; i++)
{
Bitmap image = new Bitmap(images[i]);
image = preProcess(image);
ImageToArray converter = new ImageToArray(0, 1);
converter.Convert(image, out input_data[i]);
}
pca = new PrincipalComponentAnalysis(PrincipalComponentMethod.Center);
pca.Learn(input_data);
double[][] input_pca = pca.Transform(input_data);
//o Clusters(Groups) Count: 4
som_network = new DistanceNetwork(input_pca[0].Count(), 4);
som_learning = new SOMLearning(som_network);
//o Error Goals: 0.001
//o Max Epochs: 100000
int maxIter = 100000;
double maxError = 0.001;
for (int i = 0; i < maxIter; i++)
{
double error = som_learning.RunEpoch(input_pca);
if (error < maxError)
{
break;
}
}
System.Windows.Forms.MessageBox.Show("SOM Training Complete");
}
static DistanceNetwork CreateSOM(string tagname)
{
int samples = 2 * 31 * 24;
int retro = 3;
var context = new TagDbContext();
var data = context.TagValues
.Where(t => t.Tag.TagName == tagname)
.OrderByDescending(v => v.DateTime)
.Select(v => new double[] { (double)v.DateTime.Hour, (double)v.DateTime.DayOfWeek, v.Value })
.Take(samples + retrospective + 3)
.AsEnumerable()
.Reverse()
.ToArray();
double[][] trainingSet = new double[data.Length][];
for (int index = 0; index < samples; index++)
{
trainingSet[index] = new double[] { data[index + 3][0], data[index + 3][1], data[index + 3][2],
data[index + 2][2], data[index + 1][2], data[index][2] };
}
var networkSize = 15;
var iterations = 500;
var learningRate = 0.3;
var learningRadius = 3;
Neuron.RandRange = new Range(0, 255);
// create network
DistanceNetwork network = new DistanceNetwork(2, networkSize * networkSize);
// create learning algorithm
SOMLearning trainer = new SOMLearning(network, networkSize, networkSize);
// create map
//map = new int[networkSize, networkSize, 3];
double fixedLearningRate = learningRate / 10;
double driftingLearningRate = fixedLearningRate * 9;
// iterations
int i = 0;
// loop
while (true)
{
trainer.LearningRate = driftingLearningRate * (iterations - i) / iterations + fixedLearningRate;
trainer.LearningRadius = (double)learningRadius * (iterations - i) / iterations;
// run training epoch
trainer.RunEpoch(trainingSet);
// increase current iteration
i++;
// stop ?
if (i >= iterations)
{
break;
}
}
return(network);
}
public void DistanceNetworkTest1()
{
string basePath = Path.Combine(NUnit.Framework.TestContext.CurrentContext.TestDirectory, "dn");
#region doc_example
// Assure results are reproducible
Accord.Math.Tools.SetupGenerator(0);
int numberOfInputs = 3;
int hiddenNeurons = 25;
// Create some example inputs
double[][] input =
{
new double[] { -1, -1, -1 },
new double[] { -1, 1, -1 },
new double[] { 1, -1, -1 },
new double[] { 1, 1, -1 },
new double[] { -1, -1, 1 },
new double[] { -1, 1, 1 },
new double[] { 1, -1, 1 },
new double[] { 1, 1, 1 },
};
// Create a new network
var network = new DistanceNetwork(numberOfInputs, hiddenNeurons);
// Create a teaching algorithm
var teacher = new SOMLearning(network);
// Use the teacher to learn the network
double error = Double.PositiveInfinity;
for (int i = 0; i < 10; i++)
{
error = teacher.RunEpoch(input);
}
string fileName = Path.Combine(basePath, "ann.bin");
// Save the network to a file path:
Serializer.Save(network, fileName);
// Load the network back from the stream
DistanceNetwork target = Serializer.Load <DistanceNetwork>(fileName);
#endregion
// Make sure the network we loaded is exactly the same
Assert.AreEqual(network.InputsCount, target.InputsCount);
for (int i = 0; i < network.Layers.Length; i++)
{
Assert.AreEqual(network.Layers[i].InputsCount, target.Layers[i].InputsCount);
for (int j = 0; j < network.Layers[i].Neurons.Length; j++)
{
Assert.AreEqual(network.Layers[i].Neurons[j].InputsCount, target.Layers[i].Neurons[j].InputsCount);
Assert.AreEqual(network.Layers[i].Neurons[j].Weights, target.Layers[i].Neurons[j].Weights);
}
}
}
/// <summary>
/// Deserialization Constructor
/// </summary>
/// <param name="info"></param>
/// <param name="ctxt"></param>
public ElasticNetworkLearning(SerializationInfo info, StreamingContext ctxt)
{
//Get the values from info and assign them to the appropriate properties
network = (DistanceNetwork)info.GetValue("network", typeof(DistanceNetwork));
distance = (double[])info.GetValue("distance", typeof(double[]));
learningRate = (double)info.GetValue("learningRate", typeof(double));
learningRadius = (double)info.GetValue("learningRadius", typeof(double));
squaredRadius2 = (double)info.GetValue("squaredRadius2", typeof(double));
}
/// <summary>
/// Deserialization Constructor
/// </summary>
/// <param name="info"></param>
/// <param name="ctxt"></param>
public SOMLearning(SerializationInfo info, StreamingContext ctxt)
{
//Get the values from info and assign them to the appropriate properties
network = (DistanceNetwork)info.GetValue("network", typeof(DistanceNetwork));
width = (int)info.GetValue("width", typeof(int));
height = (int)info.GetValue("height", typeof(int));
learningRate = (double)info.GetValue("learningRate", typeof(double));
learningRadius = (double)info.GetValue("learningRadius", typeof(double));
squaredRadius2 = (double)info.GetValue("squaredRadius2", typeof(double));
}
// Worker thread
void SearchSolution()
{
// create network
DistanceNetwork network = new DistanceNetwork(2, networkSize * networkSize);
// set random generators range
foreach (var layer in network.Layers)
{
foreach (var neuron in layer.Neurons)
{
neuron.RandGenerator = new UniformContinuousDistribution(
new Range(0, Math.Max(pointsPanel.ClientRectangle.Width, pointsPanel.ClientRectangle.Height)));
}
}
// create learning algorithm
SOMLearning trainer = new SOMLearning(network, networkSize, networkSize);
// create map
map = new int[networkSize, networkSize, 3];
double fixedLearningRate = learningRate / 10;
double driftingLearningRate = fixedLearningRate * 9;
// iterations
int i = 0;
// loop
while (!needToStop)
{
trainer.LearningRate = driftingLearningRate * (iterations - i) / iterations + fixedLearningRate;
trainer.LearningRadius = (double)learningRadius * (iterations - i) / iterations;
// run training epoch
trainer.RunEpoch(trainingSet);
// update map
UpdateMap(network);
// increase current iteration
i++;
// set current iteration's info
SetText(currentIterationBox, i.ToString());
// stop ?
if (i >= iterations)
{
break;
}
}
// enable settings controls
EnableControls(true);
}
public Form()
{
InitializeComponent();
rbCheck();
chartType();
Accord.Math.Random.Generator.Seed = 0;
for (int i = 0; i < 101; i++)
{
Graph[i] = new Boolean[101];
Clusters[i] = new int[101];
for (int j = 0; j < 100; j++)
{
Graph[i][j] = false;
Clusters[i][j] = 0;
}
}
#region Инициализация персептрона
/*
* netAtt = new ActivationNetwork(new SigmoidFunction(0.2), Configuration[0], Configuration.Skip(1).ToArray());
* netAtt.ForEachWeight(z => rnd.NextDouble());
* teachAtt = new BackPropagationLearning(netAtt);
* teachAtt.LearningRate = 1;
*
* netMed = new ActivationNetwork(new SigmoidFunction(0.2), Configuration[0], Configuration.Skip(1).ToArray());
* netMed.ForEachWeight(z => rnd.NextDouble());
* teachMed = new BackPropagationLearning(netMed);
* teachMed.LearningRate = 1;
*
* network = new ActivationNetwork(new SigmoidFunction(6), Configuration[0], Configuration.Skip(1).ToArray());
* network.ForEachWeight(z => rnd.NextDouble()*2-1);
* teacher = new BackPropagationLearning(network);
* teacher.LearningRate = 1;
*/
#endregion
network = new DistanceNetwork(2, NetworkWidth * NetworkHeight);
for (int x = 0; x < NetworkWidth; x++)
{
for (int y = 0; y < NetworkHeight; y++)
{
var n = network.Layers[0].Neurons[x * NetworkHeight + y];
n.Weights[0] = Rnd.NextDouble() * 0.2 + 0.4;
n.Weights[1] = Rnd.NextDouble() * 0.2 + 0.4;
}
}
learning = new SOMLearning(network, NetworkWidth, NetworkHeight);
learning.LearningRadius = LearningRadius;
learning.LearningRate = LearningRate;
Timer = new System.Windows.Forms.Timer();
Timer.Tick += (sender, args) => { Learning(); this.Invalidate(true); };
Timer.Interval = 1000;
}
/// <summary>
/// Initializes a new instance of the <see cref="SOMLearning"/> class
/// </summary>
///
/// <param name="network">Neural network to train</param>
/// <param name="width">Neural network's width</param>
/// <param name="height">Neural network's height</param>
///
/// <remarks>The constructor allows to pass network of arbitrary rectangular shape.
/// The amount of neurons in the network should be equal to <b>width</b> * <b>height</b>.
/// </remarks>
///
public SOMLearning(DistanceNetwork network, int width, int height)
{
// check network size
if (network[0].NeuronsCount != width * height)
{
throw new ArgumentException("Invalid network size");
}
this.network = network;
this.width = width;
this.height = height;
}
public Form1()
{
InitializeComponent();
if (File.Exists("BPNNBrain.net"))
{
an = (ActivationNetwork)ActivationNetwork.Load("BPNNBrain.net");
}
else if (File.Exists("SOMBrain.net"))
{
dn = (DistanceNetwork)DistanceNetwork.Load("SOMBrain.ann");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SOMLearning"/> class.
/// </summary>
///
/// <param name="network">Neural network to train.</param>
/// <param name="width">Neural network's width.</param>
/// <param name="height">Neural network's height.</param>
///
/// <remarks>The constructor allows to pass network of arbitrary rectangular shape.
/// The amount of neurons in the network should be equal to <b>width</b> * <b>height</b>.
/// </remarks>
///
/// <exception cref="ArgumentException">Invalid network size - network size does not correspond
/// to specified width and height.</exception>
///
public SOMLearning(DistanceNetwork network, int width, int height)
{
// check network size
if (network.Layers[0].Neurons.Length != width * height)
{
throw new ArgumentException("Invalid network size.");
}
this.network = network;
this.width = width;
this.height = height;
}
private void btnTraining_Click(object sender, EventArgs e)
{
double[][] input_data = new double[Data.getInstance().images.Count][];
double[][] output_data = new double[Data.getInstance().images.Count][];
int max = Data.getInstance().classes.Count - 1;
int min = 0;
for (int i = 0; i < Data.getInstance().images.Count; i++)
{
Bitmap image = Data.getInstance().preprocessing(Data.getInstance().images[i]);
ImageToArray converter = new ImageToArray(0, 1);
converter.Convert(image, out input_data[i]);
output_data[i] = new double[1];
output_data[i][0] = Data.getInstance().class_indexes[i];
output_data[i][0] = 0 + (output_data[i][0] - min) * (1 - 0) / (max - min);
}
pca = new PrincipalComponentAnalysis();
pca.Method = PrincipalComponentMethod.Center;
pca.Learn(input_data);
double[][] input_from_pca = pca.Transform(input_data);
int a = 0;
int output_count = 0;
while (a < Data.getInstance().classes.Count)
{
output_count = a * a;
a++;
}
som_network = new DistanceNetwork(input_from_pca[0].Count(), output_count);
som_learning = new SOMLearning(som_network);
int max_iteration = 10000;
double max_error = 0.0001;
for (int i = 0; i < max_iteration; i++)
{
double error = som_learning.RunEpoch(input_from_pca);
if (error < max_error)
{
break;
}
}
btnBrowseClustering.Enabled = true;
btnTraining.Enabled = false;
}
//initialize
public findForm(DistanceNetwork dn)
{
InitializeComponent();
this.dn = dn;
listView1.LargeImageList = imgList;
//Predicting Method
som = new SOMLearning(this.dn);
init();
getTrainedDataArray();
getClassMap();
classMapChecker();
}
private NeuralEngine()
{
_allData = GetTrainingData();
_imageToArray = new ImageToArray(0, 1);
_classificationNetwork = File.Exists("BPNNBrain.net")
? Network.Load("BPNNBrain.net") as ActivationNetwork
: new ActivationNetwork(new SigmoidFunction(), 100, 10, 1);
_clusteringNetwork = File.Exists("SOMBrain.net")
? Network.Load("SOMBrain.net") as DistanceNetwork
: CreateNewDistanceNetwork();
}
/// <summary>
/// Initializes a new instance of the <see cref="SOMLearning"/> class
/// </summary>
///
/// <param name="network">Neural network to train</param>
///
/// <remarks>This constructor supposes that a square network will be passed for training -
/// it should be possible to get square root of network's neurons amount.</remarks>
///
public SOMLearning(DistanceNetwork network)
{
// network's dimension was not specified, let's try to guess
int neuronsCount = network[0].NeuronsCount;
width = (int)Math.Sqrt(neuronsCount);
if (width * width != neuronsCount)
{
throw new ArgumentException("Invalid network size");
}
// ok, we got it
this.network = network;
}
// Constructor
public MainForm()
{
InitializeComponent();
// Create network
network = new DistanceNetwork(3, 100 * 100);
// Create map bitmap
mapBitmap = new Bitmap(200, 200, PixelFormat.Format24bppRgb);
//
RandomizeNetwork();
UpdateSettings();
}
public override void addModality(Signal s, string label = null)
{
base.addModality(s, label);
//Each time we add a modality the structure of the network changes
int inputCount = 0;
foreach (Signal mod in modalities)
{
inputCount += mod.Width * mod.Height;
}
network = new DistanceNetwork(inputCount, output.Width * output.Height);
teacher = new SOMLearning(network, output.Width, output.Height);
}
/// <summary>
/// Initializes a new instance of the <see cref="SOMLearning"/> class
/// </summary>
///
/// <param name="network">Neural network to train</param>
///
/// <remarks>This constructor supposes that a square network will be passed for training -
/// it should be possible to get square root of network's neurons amount.</remarks>
///
public SOMLearning(DistanceNetwork network)
{
// network's dimension was not specified, let's try to guess
int neuronsCount = network[0].NeuronsCount;
width = (int)Math.Sqrt(neuronsCount);
if (width * width != neuronsCount)
{
throw new ArgumentException("Invalid network size");
}
// ok, we got it
this.network = network;
}
// Worker thread
void SearchSolution( )
{
// set random generators range
Neuron.RandRange = new DoubleRange(0, Math.Max(this.pointsPanel.ClientRectangle.Width, this.pointsPanel.ClientRectangle.Height));
// create network
var network = new DistanceNetwork(2, this.networkSize * this.networkSize);
// create learning algorithm
var trainer = new SOMLearning(network, this.networkSize, this.networkSize);
// create map
this.map = new int[this.networkSize, this.networkSize, 3];
var fixedLearningRate = this.learningRate / 10;
var driftingLearningRate = fixedLearningRate * 9;
// iterations
var i = 0;
// loop
while (!this.needToStop)
{
trainer.LearningRate = driftingLearningRate * (this.iterations - i) / this.iterations + fixedLearningRate;
trainer.LearningRadius = (double)this.learningRadius * (this.iterations - i) / this.iterations;
// run training epoch
trainer.RunEpoch(this.trainingSet);
// update map
UpdateMap(network);
// increase current iteration
i++;
// set current iteration's info
this.currentIterationBox.Text = i.ToString( );
// stop ?
if (i >= this.iterations)
{
break;
}
}
// enable settings controls
EnableControls(true);
}
static void ReportPath(Maze maze, DistanceNetwork network, int start, int end)
{
Console.WriteLine("From " + start + " to " + end);
List <int> path = new List <int>();
int rd = 0;
bool pathFound = FindPath(maze, network, start, end, ref path, ref rd);
string pathStr = "Computed path = ";
foreach (int step in path)
{
pathStr += step + " --> ";
}
Console.WriteLine(pathStr);
}
//Going to Find Form
private void btnFind_Click(object sender, EventArgs e)
{
//validate existence of files
if (System.IO.File.Exists(savedDNNetwork))
{
//Load Networks
dn = (DistanceNetwork)DistanceNetwork.Load(savedDNNetwork);
//Go to Form
var form = new findForm(dn);
form.ShowDialog();
}
else
{
MessageBox.Show($"{savedDNNetwork} not Found");
}
}
/// <summary>
/// Initializes a new instance of the <see cref="SOMLearning"/> class.
/// </summary>
///
/// <param name="network">Neural network to train.</param>
///
/// <remarks><para>This constructor supposes that a square network will be passed for training -
/// it should be possible to get square root of network's neurons amount.</para></remarks>
///
/// <exception cref="ArgumentException">Invalid network size - square network is expected.</exception>
///
public SOMLearning(DistanceNetwork network)
{
// network's dimension was not specified, let's try to guess
var neuronsCount = network.Layers[0].Neurons.Length;
var width = (int)System.Math.Sqrt(neuronsCount);
if (width * width != neuronsCount)
{
throw new ArgumentException("Invalid network size.");
}
// ok, we got it
this.network = network;
this.width = width;
this.height = width;
}
// Constructor
public MainForm( )
{
//
// Required for Windows Form Designer support
//
InitializeComponent( );
// Create network
network = new DistanceNetwork(3, 100 * 100);
// Create map bitmap
mapBitmap = new Bitmap(200, 200, PixelFormat.Format24bppRgb);
//
RandomizeNetwork( );
UpdateSettings( );
}
/// <summary>
/// Trains Network for Clustering (Distance Network, Self Organizing Map)
/// </summary>
/// <param name="epoch">Number of epoch</param>
/// <returns>Neural network Error</returns>
// TODO: Build the correct clustering network
public double TrainClusteringNetwork(int epoch = 10000)
{
_clusteringNetwork = CreateNewDistanceNetwork();
var pcaResult = ComputePca(RemoveFromCategory(_allData.Values.ToList()));
var trainer = new SOMLearning(_clusteringNetwork);
var error = 0d;
for (var i = 0; i < epoch; i++)
{
error = trainer.RunEpoch(pcaResult);
if (error < 0.0001)
{
break;
}
}
return(error);
}
private void SetHopfieldNetworkClick(object sender, EventArgs e)
{
int cities, neurons;
if ((int.TryParse(txtbxCities.Text, out cities) && int.TryParse(txtbxNeurons.Text, out neurons)) &&
(cities > 0) && (neurons > 0))
{
this.dstNet = new DistanceNetwork(cities, neurons);
citiesMap = new double[1][];
citiesMap[0] = new double[cities];
Random r = new Random();
for (int i = 0; i < cities; i++)
{
citiesMap[0][i] = r.NextDouble();
}
}
else
{
MessageBox.Show("Wrong input !");
}
}
public MainForm()
{
InitializeComponent();
picturesPath = Application.StartupPath + @"\pictures";
listAllImages = new List <String>();
// Check BPNNBrain.net file
if (File.Exists("BPNNBrain.net"))
{
// Load BPNNBrain.net file
Network.loadActivationNetwork = (ActivationNetwork)ActivationNetwork.Load("BPNNBrain.net");
}
// Check SOMBrain.net file
if (File.Exists("SOMBrain.net"))
{
// Load SOMBrain.net file
Network.loadDistanceNetwork = (DistanceNetwork)DistanceNetwork.Load("SOMBrain.net");
}
// Check pictures directory
if (Directory.Exists(picturesPath))
{
// Load All Images
listAllImages = LoadImages();
// It means that user added some art
if (Network.checkAddArt)
{
checkListAllImages = true;
}
else
{
checkListAllImages = false;
}
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ElasticNetworkLearning"/> class.
/// </summary>
///
/// <param name="network">Neural network to train.</param>
///
public ElasticNetworkLearning(DistanceNetwork network)
{
this.network = network;
// precalculate distances array
int neurons = network.Layers[0].Neurons.Length;
double deltaAlpha = Math.PI * 2.0 / neurons;
double alpha = deltaAlpha;
distance = new double[neurons];
distance[0] = 0.0;
// calculate all distance values
for (int i = 1; i < neurons; i++)
{
double dx = 0.5 * Math.Cos(alpha) - 0.5;
double dy = 0.5 * Math.Sin(alpha);
distance[i] = dx * dx + dy * dy;
alpha += deltaAlpha;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ElasticNetworkLearning"/> class
/// </summary>
///
/// <param name="network">Neural network to train</param>
///
public ElasticNetworkLearning( DistanceNetwork network )
{
this.network = network;
// precalculate distances array
int neurons = network[0].NeuronsCount;
double deltaAlpha = Math.PI * 2.0 / neurons;
double alpha = deltaAlpha;
distance = new double[neurons];
distance[0] = 0.0;
// calculate all distance values
for ( int i = 1; i < neurons; i++ )
{
double dx = 0.5 * Math.Cos( alpha ) - 0.5;
double dy = 0.5 * Math.Sin( alpha );
distance[i] = dx * dx + dy * dy;
alpha += deltaAlpha;
}
}
/// <summary>
/// Initializes a new instance of the <see cref="ElasticNetworkLearning"/> class
/// </summary>
///
/// <param name="network">Neural network to train</param>
///
public ElasticNetworkLearning(DistanceNetwork network)
{
this.network = network;
// precalculate distances array
var neurons = network[0].NeuronsCount;
var deltaAlpha = Math.PI * 2.0 / neurons;
var alpha = deltaAlpha;
this.distance = new double[neurons];
this.distance[0] = 0.0;
// calculate all distance values
for (var i = 1; i < neurons; i++)
{
var dx = 0.5 * Math.Cos(alpha) - 0.5;
var dy = 0.5 * Math.Sin(alpha);
this.distance[i] = dx * dx + dy * dy;
alpha += deltaAlpha;
}
}
// Update map
private void UpdateMap(DistanceNetwork network)
{
// get first layer
Layer layer = network[0];
// lock
Monitor.Enter(this);
// run through all neurons
for (int i = 0, n = layer.NeuronsCount; i < n; i++)
{
var neuron = layer[i];
var x = i % this.networkSize;
var y = i / this.networkSize;
this.map[y, x, 0] = (int)neuron[0];
this.map[y, x, 1] = (int)neuron[1];
this.map[y, x, 2] = 0;
}
// collect active neurons
for (var i = 0; i < pointsCount; i++)
{
network.Compute(this.trainingSet[i]);
var w = network.GetWinner( );
this.map[w / this.networkSize, w % this.networkSize, 2] = 1;
}
// unlock
Monitor.Exit(this);
//
this.mapPanel.Invalidate( );
}
// Update map
private void UpdateMap(DistanceNetwork network)
{
// get first layer
Layer layer = network.Layers[0];
// lock
Monitor.Enter(this);
// run through all neurons
for (int i = 0; i < layer.Neurons.Length; i++)
{
Neuron neuron = layer.Neurons[i];
int x = i % networkSize;
int y = i / networkSize;
map[y, x, 0] = (int)neuron.Weights[0];
map[y, x, 1] = (int)neuron.Weights[1];
map[y, x, 2] = 0;
}
// collect active neurons
for (int i = 0; i < pointsCount; i++)
{
network.Compute(trainingSet[i]);
int w = network.GetWinner();
map[w / networkSize, w % networkSize, 2] = 1;
}
// unlock
Monitor.Exit(this);
//
mapPanel.Invalidate();
}