/// <summary>
/// Gets the event trainer.
/// </summary>
/// <param name="parameters">The machine learnable parameters.</param>
/// <param name="reportMap">The report map.</param>
/// <param name="monitor">A evaluation monitor that can be used to listen the messages during the training or it can cancel the training operation.
/// This argument can be a <c>null</c> value.</param>
/// <returns>The <see cref="IEventTrainer" /> trainer object.</returns>
/// <exception cref="System.InvalidOperationException">
/// Unable to retrieve the trainer from the training parameters.
/// or
/// The constructor of the trainer must have a standard constructor.
/// </exception>
public static IEventTrainer GetEventTrainer(TrainingParameters parameters, Dictionary <string, string> reportMap, Monitor monitor)
{
var algorithm = parameters.Get(Parameters.Algorithm);
if (algorithm == null)
{
AbstractEventTrainer trainer = new GIS(monitor);
trainer.Init(parameters, reportMap);
return(trainer);
}
var trainerType = GetTrainerType(parameters);
if (trainerType.HasValue && trainerType.Value == TrainerType.EventModelTrainer)
{
var type = GetTrainer(algorithm);
if (type == null)
{
throw new InvalidOperationException("Unable to retrieve the trainer from the training parameters.");
}
var ctor = type.GetConstructor(new [] { typeof(Monitor) });
if (ctor == null)
{
throw new InvalidOperationException("The constructor of the trainer must have a standard constructor.");
}
var trainer = (IEventTrainer)ctor.Invoke(new object[] { monitor });
trainer.Init(parameters, reportMap);
return(trainer);
}
return(null);
}
/// <summary>
/// Gets the event trainer.
/// </summary>
/// <param name="parameters">The machine learnable parameters.</param>
/// <param name="reportMap">The report map.</param>
/// <param name="monitor">
/// A evaluation monitor that can be used to listen the messages during the training or it can cancel the training operation.
/// This argument can be a <c>null</c> value.
/// </param>
/// <returns>The <see cref="IEventTrainer"/> trainer object.</returns>
public static IEventTrainer GetEventTrainer(TrainingParameters parameters, Dictionary <string, string> reportMap, Monitor monitor)
{
var algorithm = parameters.Get(Parameters.Algorithm);
if (algorithm == null)
{
AbstractEventTrainer trainer = new GIS(monitor);
trainer.Init(parameters, reportMap);
return(trainer);
}
var trainerType = GetTrainerType(parameters);
if (trainerType.HasValue && trainerType.Value == TrainerType.EventModelTrainer)
{
var type = GetTrainer(algorithm);
var trainer = (IEventTrainer)Activator.CreateInstance(type, monitor);
trainer.Init(parameters, reportMap);
return(trainer);
}
return(null);
}