ml.net-6.cs

private static void TestSinglePrediction(MLContext context)
{
    // For this test we'll load the model back from disk.
    using (var stream = new FileStream(ModelPath, FileMode.Open, FileAccess.Read, FileShare.Read))
    {
        var loadedModel = context.Model.Load(stream);

        var predictionFunction = loadedModel.CreatePredictionEngine<CountryData, CountryHappinessScorePrediction>(context);

        // Record of Italy - expected 5.964
        var sample = new CountryData
            {
                Population = 58133509,
                Area = 301230,
                PopulationDensity = 193,
                Coastline = 2.52f,
                NetMigration = 2.07f,
                InfantMortality = 5.94f,
                GDP = 26700,
                Literacy = 98.6f,
                Phones = 430.9f,
                Arable = 27.79f,
                Climate = 0,
                Birthrate = 8.72f,
                Deathrate = 10.4f
            };
        var prediction = predictionFunction.Predict(sample);

        OutputSinglePredictionResult(prediction);
    }
}