public IParameterSelection SelectParameters(TrainingHeader header, CancellationToken token)
{
log.Info("Selecting parameters...");
if (dataSet.TotalDocuments == 0)
{
log.Error("No document found");
return(null);
}
var scheduler = new ConcurrentExclusiveSchedulerPair(TaskScheduler.Default, Environment.ProcessorCount / 2)
.ConcurrentScheduler;
var taskFactory = new TaskFactory(
token,
TaskCreationOptions.LongRunning,
TaskContinuationOptions.LongRunning,
scheduler);
// https://www.quora.com/Support-Vector-Machines/SVM-performance-depends-on-scaling-and-normalization-Is-this-considered-a-drawback
header.Normalization = dataSet.Normalization;
ParametersSelectionFactory factory = new ParametersSelectionFactory(taskFactory, problemFactory);
var selection = factory.Create(header, dataSet);
return(selection);
}
public void Setup()
{
dataSet = ArffDataSet.CreateSimple("Test");
dataSet.Header.RegisterNominalClass("One");
var problemFactory = new ProblemFactory(dataSet);
factory = new ParametersSelectionFactory(Task.Factory, problemFactory);
}