/// <summary>
/// Make a prediction using the standard interface
/// </summary>
/// <param name="input">an instance of MarsHabitatPricerInput to predict from</param>
/// <param name="error">If an error occurs, upon return contains an NSError object that describes the problem.</param>
public MarsHabitatPricerOutput GetPrediction(MarsHabitatPricerInput input, out NSError error)
{
var prediction = model.GetPrediction(input, out error);
if (prediction == null)
{
return(null);
}
var priceValue = prediction.GetFeatureValue("price").DoubleValue;
return(new MarsHabitatPricerOutput(priceValue));
}
void updatePredictedPrice()
{
var pricerInput = new MarsHabitatPricerInput(datasource.GetValue(pickerView.SelectedRowInComponent(0), Feature.SolarPanels),
datasource.GetValue(pickerView.SelectedRowInComponent(1), Feature.Greenhouses),
datasource.GetValue(pickerView.SelectedRowInComponent(2), Feature.Size));
// Use the ML model
NSError prErr;
var outFeatures = model.GetPrediction(pricerInput, out prErr);
var result = outFeatures.GetFeatureValue("price").DoubleValue;
priceLabel.Text = "Predicted Price (millions) " + priceFormatter.StringFor(new NSNumber(result));
Console.WriteLine(prErr == null ? $"result was {result}" : "Unexpected runtime error " + prErr.Description);
}
/// <summary>
/// Make a prediction using the standard interface
/// </summary>
/// <param name="input">an instance of MarsHabitatPricerInput to predict from</param>
/// <param name="error">If an error occurs, upon return contains an NSError object that describes the problem.</param>
public MarsHabitatPricerOutput GetPrediction(MarsHabitatPricerInput input, out NSError error)
{
if (input == null)
{
throw new ArgumentNullException(nameof(input));
}
var prediction = model.GetPrediction(input, out error);
if (prediction == null)
{
return(null);
}
var priceValue = prediction.GetFeatureValue("price").DoubleValue;
return(new MarsHabitatPricerOutput(priceValue));
}
/// <summary>
/// Make a prediction using the convenience interface
/// </summary>
/// <param name="solarPanels">Number of solar panels as double</param>
/// <param name="greenhouses">Number of greenhouses as double</param>
/// <param name="size">Size in acres as double</param>
/// <param name="error">If an error occurs, upon return contains an NSError object that describes the problem.</param>
public MarsHabitatPricerOutput GetPrediction(double solarPanels, double greenhouses, double size, out NSError error)
{
var input = new MarsHabitatPricerInput(solarPanels, greenhouses, size);
return(GetPrediction(input, out error));
}