public static async Task MultiThreadedLearning()
{
var example = new MyExample { Income = 40, Age = 25 };
var label = new SimpleLabel { Label = 1 };
var settings = new VowpalWabbitSettings
{
ParallelOptions = new ParallelOptions
{
MaxDegreeOfParallelism = 16
},
ExampleCountPerRun = 2000,
ExampleDistribution = VowpalWabbitExampleDistribution.RoundRobin
};
using (var vw = new VowpalWabbitThreadedLearning(settings))
{
using (var vwManaged = vw.Create<MyExample>())
{
var prediction = await vwManaged.Learn(example, label, VowpalWabbitPredictionType.Scalar);
}
var saveModelTask = vw.SaveModel("m1.model");
await vw.Complete();
await saveModelTask;
}
}
public static void AnnotationExample()
{
using (var vw = new VowpalWabbit<MyExample>(new VowpalWabbitSettings { EnableStringExampleGeneration = true }))
{
var ex = new MyExample { Income = 40, Age = 25 };
var label = new SimpleLabel { Label = 1 };
var str = vw.Serializer.Create(vw.Native).SerializeToString(ex, label);
// 1 |p Income:4 | Age25
vw.Learn(ex, label);
var prediction = vw.Predict(ex, VowpalWabbitPredictionType.Scalar);
}
}
public override void EnterExample(VowpalWabbitParser.ExampleContext context)
{
this.label = null;
this.example.Features.Clear();
}
public override void ExitLabel_simple(VowpalWabbitParser.Label_simpleContext context)
{
this.label = new SimpleLabel
{
Label = context.value.value
};
}