public static void AddBinaryFeatures(IList <string> features, string name1, CoreLabel label1, FeatureFactory.FeatureComponent feature11, FeatureFactory.FeatureComponent feature12, string name2, CoreLabel label2, FeatureFactory.FeatureComponent
feature21, FeatureFactory.FeatureComponent feature22)
{
if (label1 == null)
{
if (label2 == null)
{
features.Add(name1 + "n" + name2 + "n");
}
else
{
AddUnaryFeature(features, name1 + "n" + name2 + feature21.ShortName() + "-", label2, feature21);
AddUnaryFeature(features, name1 + "n" + name2 + feature22.ShortName() + "-", label2, feature22);
}
}
else
{
if (label2 == null)
{
AddUnaryFeature(features, name1 + feature11.ShortName() + name2 + "n-", label1, feature11);
AddUnaryFeature(features, name1 + feature12.ShortName() + name2 + "n-", label1, feature12);
}
else
{
AddBinaryFeature(features, name1 + feature11.ShortName() + name2 + feature21.ShortName() + "-", label1, feature11, label2, feature21);
AddBinaryFeature(features, name1 + feature11.ShortName() + name2 + feature22.ShortName() + "-", label1, feature11, label2, feature22);
AddBinaryFeature(features, name1 + feature12.ShortName() + name2 + feature21.ShortName() + "-", label1, feature12, label2, feature21);
AddBinaryFeature(features, name1 + feature12.ShortName() + name2 + feature22.ShortName() + "-", label1, feature12, label2, feature22);
}
}
}
public static string GetFeatureFromCoreLabel(CoreLabel label, FeatureFactory.FeatureComponent feature)
{
string value = null;
switch (feature)
{
case FeatureFactory.FeatureComponent.Headword:
{
value = (label == null) ? Null : label.Get(typeof(TreeCoreAnnotations.HeadWordLabelAnnotation)).Value();
break;
}
case FeatureFactory.FeatureComponent.Headtag:
{
value = (label == null) ? Null : label.Get(typeof(TreeCoreAnnotations.HeadTagLabelAnnotation)).Value();
break;
}
case FeatureFactory.FeatureComponent.Value:
{
value = (label == null) ? Null : label.Value();
break;
}
default:
{
throw new ArgumentException("Unexpected feature type: " + feature);
}
}
return(value);
}
public static void AddTrigramFeature(IList <string> features, string featureType, CoreLabel label1, FeatureFactory.FeatureComponent feature1, CoreLabel label2, FeatureFactory.FeatureComponent feature2, CoreLabel label3, FeatureFactory.FeatureComponent
feature3)
{
string value1 = GetFeatureFromCoreLabel(label1, feature1);
string value2 = GetFeatureFromCoreLabel(label2, feature2);
string value3 = GetFeatureFromCoreLabel(label3, feature3);
features.Add(featureType + value1 + "-" + value2 + "-" + value3);
}
public static void AddUnaryFeature(IList <string> features, string featureType, CoreLabel label, FeatureFactory.FeatureComponent feature)
{
string value = GetFeatureFromCoreLabel(label, feature);
features.Add(featureType + value);
}
public static void AddSeparatorFeature(IList <string> features, string featureType, CoreLabel label1, FeatureFactory.FeatureComponent feature1, CoreLabel label2, FeatureFactory.FeatureComponent feature2, bool between)
{
string value1 = GetFeatureFromCoreLabel(label1, feature1);
string value2 = GetFeatureFromCoreLabel(label2, feature2);
features.Add(featureType + value1 + "-" + value2 + "-" + between);
}
public static void AddSeparatorFeature(IList <string> features, string featureType, CoreLabel label, FeatureFactory.FeatureComponent feature, bool between)
{
string value = GetFeatureFromCoreLabel(label, feature);
features.Add(featureType + value + "-" + between);
}
public static void AddSeparatorFeature(IList <string> features, string featureType, CoreLabel label, FeatureFactory.FeatureComponent feature, State.HeadPosition separator)
{
if (separator == null)
{
return;
}
string value = GetFeatureFromCoreLabel(label, feature);
features.Add(featureType + value + "-" + separator);
}