/// <summary>
/// The main program class.
/// </summary>
public class Program
{
    // filenames for training and test data
    private static string trainingDataPath = Path.Combine(Environment.CurrentDirectory, "train_data.csv");
    private static string testDataPath = Path.Combine(Environment.CurrentDirectory, "test_data.csv");

    /// <summary>
    /// The main application entry point.
    /// </summary>
    /// <param name="args">The command line arguments.</param>
    public static void Main(string[] args)
    {
        // set up a machine learning context
        var mlContext = new MLContext();

        // set up a text loader
        var textLoader = mlContext.Data.CreateTextLoader(
            new TextLoader.Options()
            {
                Separators = new[] { ',' },
                HasHeader = true,
                AllowQuoting = true,
                Columns = new[]
                {
                    new TextLoader.Column("Label", DataKind.Boolean, 1),
                    new TextLoader.Column("Pclass", DataKind.Single, 2),
                    new TextLoader.Column("Name", DataKind.String, 3),
                    new TextLoader.Column("Sex", DataKind.String, 4),
                    new TextLoader.Column("RawAge", DataKind.String, 5),  // <-- not a float!
                    new TextLoader.Column("SibSp", DataKind.Single, 6),
                    new TextLoader.Column("Parch", DataKind.Single, 7),
                    new TextLoader.Column("Ticket", DataKind.String, 8),
                    new TextLoader.Column("Fare", DataKind.Single, 9),
                    new TextLoader.Column("Cabin", DataKind.String, 10),
                    new TextLoader.Column("Embarked", DataKind.String, 11)
                }
            }
        );

        // load training and test data
        Console.WriteLine("Loading data...");
        var trainingDataView = textLoader.Load(trainingDataPath);
        var testDataView = textLoader.Load(testDataPath);

        // the rest of the code goes here...
    }
}