public PredictionEngine <TInput, TPrediction> GetPredictionEngine(string modelName)
{
if (_namedPools.ContainsKey(modelName))
{
return(_namedPools[modelName].PredictionEnginePool.Get());
}
if (string.IsNullOrEmpty(modelName))
{
if (_defaultPool == null)
{
throw new ArgumentException("You need to configure a default, not named, model before you use this method.");
}
return(_defaultPool.PredictionEnginePool.Get());
}
var options = _optionsFactory.Create(modelName);
var pool = new ModelPoolLoader <TInput, TPrediction>(options);
_namedPools.Add(modelName, pool);
return(pool.PredictionEnginePool.Get());
}
public ModelPredictionEngine(
IOptionsFactory <ModelPredictionEngineOptions <TInput, TPrediction> > optionsFactory,
IOptions <MLContextOptions> mlContextOptions)
{
_optionsFactory = optionsFactory ?? throw new ArgumentNullException(nameof(optionsFactory));
MLContext = mlContextOptions.Value.MLContext ?? throw new ArgumentNullException(nameof(mlContextOptions));
var defaultOptions = _optionsFactory.Create(string.Empty);
if (defaultOptions.CreateModel != null)
{
_defaultPool = new ModelPoolLoader <TInput, TPrediction>(defaultOptions);
}
_namedPools = new Dictionary <string, ModelPoolLoader <TInput, TPrediction> >();
}