private static void ReplacePOSTag(Tree t, MorphoFeatureSpecification morpho)
{
if (!t.IsPreTerminal())
{
throw new ArgumentException("Can only operate on preterminals");
}
if (!(t.Label() is CoreLabel))
{
throw new ArgumentException("Only operates on CoreLabels");
}
CoreLabel label = (CoreLabel)t.Label();
Tree child = t.Children()[0];
if (!(child.Label() is CoreLabel))
{
throw new ArgumentException("Only operates on CoreLabels");
}
CoreLabel childLabel = (CoreLabel)child.Label();
// Morphological Analysis
string morphStr = childLabel.OriginalText();
if (morphStr == null || morphStr.Equals(string.Empty))
{
morphStr = label.Value();
// POS subcategory
string subCat = childLabel.Category();
if (subCat != null && subCat != string.Empty)
{
morphStr += "-" + subCat + "--";
}
else
{
morphStr += "---";
}
}
MorphoFeatures feats = morpho.StrToFeatures(morphStr);
if (feats.GetAltTag() != null && !feats.GetAltTag().Equals(string.Empty))
{
label.SetValue(feats.GetAltTag());
label.SetTag(feats.GetAltTag());
}
}