/// <summary>
/// Exports the training data that was used to train the current tree.
/// </summary>
/// <param name="observations">
/// The genome.
/// </param>
/// <param name="ranks">
/// The target performance.
/// </param>
/// <param name="path">
/// The path and file name. Add '{0}' in path, if you want an auto-incremented counter in the file name.
/// </param>
internal static void WriteAggregatedTrainingData(F64Matrix observations, double[] ranks, string path)
{
var filePath = new FileInfo(path);
if (filePath.DirectoryName != null)
{
Directory.CreateDirectory(filePath.DirectoryName);
}
var csvBuilder = new StringBuilder(
string.Concat(string.Join(";", Enumerable.Range(1, observations.ColumnCount).Select(r => $"Feature_{r}")), ";Rank")).AppendLine();
for (var row = 0; row < observations.RowCount; row++)
{
var rowString = observations.GetRowAsCsv(row, ";");
csvBuilder.Append(rowString);
csvBuilder.AppendFormat(CultureInfo.InvariantCulture, ";{0}", ranks[row]).AppendLine();
}
File.WriteAllText(filePath.FullName, csvBuilder.ToString(), Encoding.UTF8);
}
