private static ConfusionMatrixValidation TestClassificator(AbstractClassification classificator, bool printToStdout = false)
{
List <DataElement> dataSet = new List <DataElement>();
using (Database db = new Database())
{
dataSet = db.GetElements();
}
classificator.Learn(dataSet);
ConfusionMatrixValidation validator = new ConfusionMatrixValidation(classificator, dataSet, crossValidationSets);
if (printToStdout)
{
Console.WriteLine($"Accuracy rate: {validator.AccuracyRate}");
Console.WriteLine($"Correct: {validator.CorrectCount}");
Console.WriteLine($"Errors: {validator.ErrorCount}");
for (int i = 0; i < Enum.GetNames(typeof(SongGenre)).Length; i++)
{
SongGenre genre = (SongGenre)i;
Console.WriteLine("------------");
Console.WriteLine(genre.ToString().ToUpper());
Console.WriteLine("------------");
Console.WriteLine($"ROC > True Positive rate: {validator.TPRate(genre)}");
Console.WriteLine($"ROC > False Positive rate: {validator.FPRate(genre)}");
Console.WriteLine($"True positive: {validator.TP(genre)}");
Console.WriteLine($"True negative: {validator.TN(genre)}");
Console.WriteLine($"False positive: {validator.FP(genre)}");
Console.WriteLine($"False negative: {validator.FN(genre)}");
}
}
return(validator);
}
private static void ExportToFile(ConfusionMatrixValidation validator, string filePath, string delimiter = "\t")
{
if (!File.Exists(filePath))
{
StringBuilder header = new StringBuilder($"AccuracyRate{delimiter}Correct{delimiter}Errors{delimiter}ComputationTime{delimiter}");
for (int i = 0; i < Enum.GetNames(typeof(SongGenre)).Length; i++)
{
SongGenre genre = (SongGenre)i;
header.Append($"Precision{genre}{delimiter}Recall{genre}{delimiter}TPRate{genre}{delimiter}FPRate{genre}{delimiter}TP{genre}{delimiter}TN{genre}{delimiter}FP{genre}{delimiter}FN{genre}{delimiter}");
}
File.AppendAllText(filePath, header.ToString() + "\n");
}
string data = ConvertToString(validator, delimiter);
File.AppendAllText(filePath, data + "\n");
}
private static string ConvertToString(ConfusionMatrixValidation validator, string delimiter)
{
StringBuilder sb = new StringBuilder();
sb.Append(validator.AccuracyRate);
sb.Append(delimiter);
sb.Append(validator.CorrectCount);
sb.Append(delimiter);
sb.Append(validator.ErrorCount);
sb.Append(delimiter);
sb.Append(validator.ComputationTime);
sb.Append(delimiter);
for (int i = 0; i < Enum.GetNames(typeof(SongGenre)).Length; i++)
{
SongGenre genre = (SongGenre)i;
sb.Append(validator.Precision(genre));
sb.Append(delimiter);
sb.Append(validator.Recall(genre));
sb.Append(delimiter);
sb.Append(validator.TPRate(genre));
sb.Append(delimiter);
sb.Append(validator.FPRate(genre));
sb.Append(delimiter);
sb.Append(validator.TP(genre));
sb.Append(delimiter);
sb.Append(validator.TN(genre));
sb.Append(delimiter);
sb.Append(validator.FP(genre));
sb.Append(delimiter);
sb.Append(validator.FN(genre));
sb.Append(delimiter);
}
return(sb.ToString());
}
