private void timer1_Tick(object sender, EventArgs e)
{
_lvq.LearnOneEpoch(_learningRate);
double d = (double)_lvq.Test() / _lvq.trainingData.Count;
nud_accuracy.Value = System.Convert.ToInt32((100 * d));
_graphics.Clear(Color.White);
pictureBox1.Image = _bitmap;
Drawing.DrawCodeVectors(_graphics, _lvq._w);
Drawing.DrawData(_graphics, _data, _width, _height);
}