public void Run(TrainingSession session)
{
if (session.Iteration % Step != 0)
{
return;
}
Func.Invoke(session);
}
public static IEnumerable <TrainingProgress> Start(TrainingSession session, int maxIteration, int progressOutputStep, Logger logger)
{
int sampleCount = 0;
var loss = 0.0;
var metric = 0.0;
var oldControlCTreatment = Console.TreatControlCAsInput;
Console.TreatControlCAsInput = true;
try
{
foreach (var t in session.GetIterator(maxIteration))
{
if (Console.KeyAvailable)
{
var key = Console.ReadKey(true);
if ((key.Modifiers & ConsoleModifiers.Control) != 0 && key.Key == ConsoleKey.C)
{
break;
}
}
sampleCount += t.SampleCount;
loss += t.Loss;
metric += t.Metric;
if (t.Iteration % progressOutputStep == 0 || t.Iteration == maxIteration)
{
var p = new TrainingProgress();
p.Epoch = t.Epoch;
p.Iteration = t.Iteration;
p.SampleCount += sampleCount;
p.Loss = loss / progressOutputStep;
p.Metric = metric / progressOutputStep;
p.Validation = t.GetValidationMetric();
p.LearningRate = t.Learner.LearningRate();
p.Elapsed = t.Elapsed;
if (logger != null)
{
logger.Info(p, "Training Progress");
}
yield return(p);
loss = 0.0;
metric = 0.0;
}
}
}
finally
{
Console.TreatControlCAsInput = oldControlCTreatment;
}
}
protected override void EndProcessing()
{
try
{
var session = new TrainingSession(Model, LossFunction, EvaluationFunction, Learner, LearningScheduler, Sampler, ValidationSampler, DataToInputMap, null, null, Callbacks);
foreach (var progress in TrainingLoop.Start(session, MaxIteration, ProgressOutputStep, Logger))
{
WriteObject(progress);
}
}
finally
{
Sampler.Dispose();
ValidationSampler.Dispose();
}
}
protected override void EndProcessing()
{
var session = new TrainingSession(Model, LossFunction, EvaluationFunction, Learner, LearningScheduler, Sampler, ValidationSampler, DataToInputMap, null, null, Callbacks);
WriteObject(session);
}