SampleApp.MainForm.btnEstimateSigmoid_Click C# (CSharp) Method

        private void btnEstimateSigmoid_Click(object sender, EventArgs e)
        {
            DataTable source = dgvLearningSource.DataSource as DataTable;

            // Creates a matrix from the source data table
            double[,] sourceMatrix = source.ToMatrix(out columnNames);

            // Get only the input vector values (in the first two columns)
            double[][] inputs = sourceMatrix.GetColumns(0, 1).ToArray();

            DoubleRange range; // valid range will be returned as an out parameter
            var sigmoid = Sigmoid.Estimate(inputs, inputs.Length, out range);

            if (sigmoid.Alpha < (double)Decimal.MaxValue && sigmoid.Alpha > (double)Decimal.MinValue)
                numSigAlpha.Value = (decimal)sigmoid.Alpha;

            if (sigmoid.Constant < (double)Decimal.MaxValue && sigmoid.Constant > (double)Decimal.MinValue)
                numSigB.Value = (decimal)sigmoid.Constant;
        }