/// <summary>
/// 取消异步训练操作。
/// </summary>
public void CancelAsync()
{
if (_cts != null)
_cts.Cancel();
TrainingCompletedEventArgs ea =
new TrainingCompletedEventArgs(null, null, true, null);
OnTrainingCompleted(ea);
_isRunning = false;
}
private void OnTrainingCompleted(TrainingCompletedEventArgs e)
{
e.Raise(this, ref TrainingCompleted);
}
/// <summary>
/// 异步在一个文档集上训练。
/// </summary>
/// <param name="corpus">训练集</param>
public void TrainAsync(Corpus corpus)
{
if (_isRunning)
throw new InvalidOperationException(MessageInvalidOperation);
if (Initialize())
{
_isRunning = true;
_cts = new CancellationTokenSource();
Task task = Task.Factory.StartNew(() =>
{
try
{
Model model = LearnCorpus(corpus, _cts.Token);
TrainingCompletedEventArgs ea =
new TrainingCompletedEventArgs(
model, null, false, null);
OnTrainingCompleted(ea);
_isRunning = false;
}
catch (Exception ex)
{
TrainingCompletedEventArgs ea =
new TrainingCompletedEventArgs(
null, ex, false, null);
OnTrainingCompleted(ea);
_isRunning = false;
}
}, _cts.Token);
}
else
{
throw new ApplicationException(MessageInitializeFailed);
}
}