private static void WriteSampleFile(SampleFile sampleFile, string outputFilePath)
{
if (File.Exists(outputFilePath))
{
File.Delete(outputFilePath);
}
string[] dataLines = new string[sampleFile.Datapoints.Count];
for (int i = 0; i < sampleFile.Datapoints.Count; i++)
{
string datapointStr = "";
for (int j = 0; j < sampleFile.Datapoints[i].Length; j++)
{
datapointStr += sampleFile.Datapoints[i][j].ToString() + '|';
}
dataLines[i] = datapointStr;
}
File.AppendAllLines(outputFilePath, dataLines);
}
private static SampleFile GenerateArtificialSampleFile(SampleFile randomSample, SampleFile averageSampleFile,
int datapointValueCount, double averageMultiplier)
{
Random rand = new Random();
SampleFile artificialSampleFile = new SampleFile(randomSample.Datapoints.Count, datapointValueCount);
for (int i = 0; i < randomSample.Datapoints.Count; i++)
{
for (int j = 0; j < randomSample.Datapoints[i].Length; j++)
{
double absAverageDatapointValue = Math.Abs(averageSampleFile.Datapoints[i][j]);
artificialSampleFile.Datapoints[i][j] = randomSample.Datapoints[i][j] +
(-absAverageDatapointValue + 2 * rand.NextDouble() * absAverageDatapointValue) * averageMultiplier;
artificialSampleFile.Datapoints[i][j] = Math.Round(artificialSampleFile.Datapoints[i][j], 5);
}
}
return(artificialSampleFile);
}
static void Main(string[] args)
{
var configuration = new ConfigurationBuilder()
.AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
.Build();
Logger.Info("Application initialized");
var appSettings = configuration.GetSection("AppSettings").Get <AppSettings>();
string[] sampleFiles = Directory.GetFiles(appSettings.InputPath);
List <SampleFile> sampleFileList = new List <SampleFile>();
foreach (string sampleFile in sampleFiles)
{
string[] dataLines = File.ReadAllLines(sampleFile);
List <double[]> inputDataValues = ParseDataStringsIntoNumList(dataLines, appSettings.DatapointValueCount);
sampleFileList.Add(new SampleFile(inputDataValues));
Logger.Info("Acquired data from {0}", sampleFile);
}
SampleFile averageSampleFile = new SampleFile(sampleFileList[0].Datapoints.Count, appSettings.DatapointValueCount);
foreach (SampleFile sampleFile in sampleFileList)
{
for (int i = 0; i < sampleFile.Datapoints.Count; i++)
{
for (int j = 0; j < appSettings.DatapointValueCount; j++)
{
averageSampleFile.Datapoints[i][j] += sampleFile.Datapoints[i][j];
}
}
}
averageSampleFile.AverageDatapoints(sampleFileList.Count);
string averageFilePath = Path.Combine(appSettings.OutputPath, "average_sample.txt");
WriteSampleFile(averageSampleFile, averageFilePath);
Logger.Info("Average data values written to file {0}", averageFilePath);
int finishedFiles = 0;
Random rand = new Random();
Parallel.For(0, appSettings.OutputFileCount, (i, loopState) =>
{
SampleFile randomSample = sampleFileList[rand.Next(sampleFileList.Count)];
SampleFile artificialSampleFile = GenerateArtificialSampleFile(randomSample, averageSampleFile,
appSettings.DatapointValueCount, appSettings.AverageMultiplier);
string pathToArtificialSample = Path.Combine(appSettings.OutputPath, $"artficial_sample{i}.txt");
WriteSampleFile(artificialSampleFile, pathToArtificialSample);
int curFinishedFiles = Interlocked.Increment(ref finishedFiles);
double donePercentage = Math.Round(((double)curFinishedFiles / (double)appSettings.OutputFileCount) * 100, 2);
Logger.Info("Artificial file {0} generated ({1}% done)", pathToArtificialSample, donePercentage);
});
Logger.Info("All {0} artificial samples successfully generated", appSettings.OutputFileCount);
Logger.Info("Program shutdown");
Console.ReadLine();
}