/// <name>btnRun_Click</name>
/// <type>Event</type>
/// <author>John Wittenauer</author>
/// <summary>
/// Trains the map using user-select settings and input.
/// </summary>
/// <param name="sender">Windows event parameter</param>
/// <param name="e">Windows event parameter</param>
private void btnRun_Click(object sender, EventArgs e)
{
// Validate that required parameters have been specified
bool verifiedParameters = false;
if (txtFileName.Text.Length == 0)
{
MessageBox.Show("No file name was specified.", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (numAttributes.Value == 0 || numInstances.Value == 0)
{
MessageBox.Show("Number of attributes and number of instances were not properly specified.",
"Error", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else if (!int.TryParse(txtXMapSize.Text, out xMapSize) || !int.TryParse(txtYMapSize.Text, out yMapSize))
{
MessageBox.Show("Map size parameters were not properly specified.", "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
else
{
verifiedParameters = true;
}
if (verifiedParameters)
{
// Declare a parser object and parse the provided input file into a table
Parser parser = new Parser((int)numAttributes.Value, (int)numInstances.Value);
try
{
parser.ParseInputFile(txtFileName.Text);
}
catch (IOException ex)
{
MessageBox.Show("File Read Error: " + ex.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
catch (Exception ex)
{
MessageBox.Show("Exception Thrown: " + ex.Message, "Error",
MessageBoxButtons.OK, MessageBoxIcon.Error);
}
// Declare a new map object and initialize it appropriately
som = new Map(xMapSize, yMapSize, parser.NumberOfDimensions, (int)numIterations.Value,
(double)numLearningRate.Value, parser);
som.ExponentialRadiusDecay = radNeighborhoodExp.Checked;
som.ExponentialLearningDecay = radLearningExp.Checked;
som.ExponentialInfluenceDecay = radInfluenceExp.Checked;
// Now that the map has been initialized we can draw the initial
// version before training has started
drawMap = true;
proTrainingTime.Value = 0;
pnlDisplayBlend.Refresh();
// Timer for the overall map training time
Stopwatch timer = new Stopwatch();
timer.Start();
// Each loop is one training iteration - continues until the
// user-defined maximum is reached
while (som.Epoch < som.EpochLimit)
{
som.TrainMap();
if ((som.Epoch % (som.EpochLimit / 10)) == 0)
{
proTrainingTime.Value += 10;
pnlDisplayBlend.Refresh();
}
}
// Update the timer display
TimeSpan elapsedTime = timer.Elapsed;
timer.Stop();
double timeDisplay = (double)elapsedTime.TotalMilliseconds / 1000;
lblTrainingTime.Text = "Training Time: " + timeDisplay.ToString().Substring(0, 5) + " sec";
// Calculate the average quantization error of the map and update the label
som.CalculateAQE();
//lblAQE.Text = "AQE: " + som.AverageQuantizationError.ToString().Substring(0, 8);
lblAQE.Text = "AQE: " + som.AverageQuantizationError.ToString();
// Do a final refresh on the blended visualization display
pnlDisplayBlend.Refresh();
// Calculate the unified distance matrix of the trained map and refresh the
// display for the panel showing the U-matrix
som.CalculateUMatrix();
pnlDisplayUMatrix.Refresh();
// Display the first four dimensions of the map as four component planes
pnlDisplayComponents.Refresh();
}
}
