write code to predict price of aapl in 2 weeks . use ml.net version 2 in csharp

Here's an example code to predict the price of AAPL in 2 weeks using ML.NET version 2 and regression:

main.cs
using System;
using System.IO;
using System.Linq;
using Microsoft.ML;
using Microsoft.ML.Data;
using Microsoft.ML.Trainers;
using Microsoft.ML.Transforms;

class Program
{
    static void Main(string[] args)
    {
        // Define the data schema
        var schema = new DataSchema();

        // Create MLContext
        var context = new MLContext();

        // Load the training data
        var dataView = context.Data.LoadFromTextFile<InputModel>("aapl_train.csv", separatorChar: ',', hasHeader: true);

        // Create the pipeline
        var pipeline = context.Transforms.Conversion.MapValueToKey("Label", "Close")
            .Append(context.Transforms.Concatenate("Features", "High", "Low", "Open", "Volume"))
            .Append(context.Transforms.NormalizeMinMax("Features"))
            .Append(context.Transforms.Conversion.MapKeyToValue("Label"))
            .Append(context.Transforms.Concatenate("Features", "Features"))
            .Append(context.Transforms.DropColumns("High", "Low", "Open", "Volume"))
            .Append(context.Transforms.CopyColumns("Score", "Close"))
            .Append(context.Transforms.SelectColumns("Score"))
            .Append(context.Transforms.Dictionarize("ScoreDict", "Score", Microsoft.ML.Transforms.ValueToKeyMode.OneHotHash))
            .Append(context.Transforms.NormalizeMinMax("Features"))
            .Append(context.Transforms.Concatenate("Features", "Features", "ScoreDict"))
            .Append(context.Transforms.DropColumns("Score", "ScoreDict"))
            .Append(context.Transforms.NormalizeMinMax("Features"))
            .Append(context.Regression.Trainers.Sdca(e => e.Label, e => e.Features, maximumNumberOfIterations: 1000));

        // Train the model
        var model = pipeline.Fit(dataView);

        // Load the test data
        var testDataView = context.Data.LoadFromTextFile<InputModel>("aapl_test.csv", separatorChar: ',', hasHeader: true);

        // Use the model to predict the price of AAPL in 2 weeks
        var predictionEngine = context.Model.CreatePredictionEngine<InputModel, OutputModel>(model);
        var input = new InputModel { High = 326.54f, Low = 323.48f, Open = 326, Volume = 1726552 };
        var output = predictionEngine.Predict(input);

        Console.WriteLine($"Predicted Close Price: {output.Close}");
    }
}

// Define the input data schema
class InputModel
{
    [LoadColumn(0)] public float High;
    [LoadColumn(1)] public float Low;
    [LoadColumn(2)] public float Open;
    [LoadColumn(3)] public float Volume;
    [LoadColumn(4)] public float Close;
}

// Define the output data schema
class OutputModel
{
    [ColumnName("Score")] public float Close;
}

// Define the data schema
class DataSchema
{
    public Column[] Columns { get; } = new Column[]
    {
        new Column("High", DataKind.R4, 0),
        new Column("Low", DataKind.R4, 1),
        new Column("Open", DataKind.R4, 2),
        new Column("Volume", DataKind.R4, 3),
        new Column("Close", DataKind.R4, 4),
        new Column("Label", DataKind.R4, 4),
    };
}

// Define a column
class Column
{
    public Column(string name, DataKind type, int index)
    {
        Name = name;
        Type = type;
        Index = index;
    }

    public string Name { get; }
    public DataKind Type { get; }
    public int Index { get; }
}
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This code assumes that you have the training and test datasets in the CSV format, with the following columns: "High", "Low", "Open", "Volume", "Close". You can replace "aapl_train.csv" and "aapl_test.csv" with the file names of your datasets.

To predict the price of AAPL in 2 weeks, you need to create an instance of the InputModel class with the values of "High", "Low", "Open", and "Volume" for the current date, and call the Predict method of the PredictionEngine object. The predicted close price will be in the Close property of the output object.

Note that the ML.NET version 2 has been deprecated and version 1.4 is the latest. The example above is using version 2 as specified in the question.

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