public MatrixData GetRightOrWrongMatrix(MatrixData input)
{
MatrixData output = new MatrixData(input.NumberOfRows, 4);
output.ChangeHeader(0, "#");
output.ChangeHeader(1, "Actual");
output.ChangeHeader(2, "Predict");
output.ChangeHeader(3, "Correct?");
double[][] dataSet = input.Data.ToJagged().ToDoubleArray();
// percentage correct using winner-takes all
bool result;
int numCorrect = 0;
int numWrong = 0;
double[] xValues = new double[numInput]; // inputs
double[] tValues = new double[numOutput]; // targets
double[] yValues; // computed Y
confusionMatrix = new int[numOutput, numOutput];
//confusionMatrixCnt = 0;
for (int i = 0; i < dataSet.Length; ++i)
{
Array.Copy(dataSet[i], xValues, numInput); // parse test data into x-values and t-values
Array.Copy(dataSet[i], numInput, tValues, 0, numOutput);
yValues = this.ComputeOutputs(xValues);
int maxIndexOut = MaxIndex(yValues); // which cell in yValues has largest value?
int maxIndexExpected = MaxIndex(tValues); // which cell in yValues has largest value?
if (maxIndexOut == maxIndexExpected)
{
numCorrect++; result = true;
}
else
{
numWrong++; result = false;
}
output.SetValue(i, 0, input.GetRowName(i));
output.SetValue(i, 1, maxIndexOut);
output.SetValue(i, 2, maxIndexExpected);
output.SetValue(i, 3, (result)? "Y":"N");
}
return(output);
}
