private IntPair GetNPSpanOld(IndexedWord headword, SemanticGraph dep, IList <CoreLabel> sent)
{
IndexedWord cop = dep.GetChildWithReln(headword, UniversalEnglishGrammaticalRelations.Copula);
Pair <IndexedWord, IndexedWord> leftRight = SemanticGraphUtils.LeftRightMostChildVertices(headword, dep);
// headword can be first or last word
int beginIdx = Math.Min(headword.Index() - 1, leftRight.first.Index() - 1);
int endIdx = Math.Max(headword.Index() - 1, leftRight.second.Index() - 1);
// no copula relation
if (cop == null)
{
return(new IntPair(beginIdx, endIdx));
}
// if we have copula relation
IList <IndexedWord> children = dep.GetChildList(headword);
int copIdx = children.IndexOf(cop);
if (copIdx + 1 < children.Count)
{
beginIdx = Math.Min(headword.Index() - 1, SemanticGraphUtils.LeftMostChildVertice(children[copIdx + 1], dep).Index() - 1);
}
else
{
beginIdx = headword.Index() - 1;
}
return(new IntPair(beginIdx, endIdx));
}
/// <summary>
/// return the left and right most node except copula relation (nsubj & cop) and some others (maybe discourse?)
/// e.g., you are the person -> return "the person"
/// </summary>
private IntPair GetNPSpan(IndexedWord headword, SemanticGraph dep, IList <CoreLabel> sent)
{
int headwordIdx = headword.Index() - 1;
IList <IndexedWord> children = dep.GetChildList(headword);
// if(children.size()==0) return new IntPair(headwordIdx, headwordIdx); // the headword is the only word
// check if we have copula relation
IndexedWord cop = dep.GetChildWithReln(headword, UniversalEnglishGrammaticalRelations.Copula);
int startIdx = (cop == null) ? 0 : children.IndexOf(cop) + 1;
// children which will be inside of NP
IList <IndexedWord> insideNP = Generics.NewArrayList();
for (int i = startIdx; i < children.Count; i++)
{
IndexedWord child = children[i];
SemanticGraphEdge edge = dep.GetEdge(headword, child);
if (edge.GetRelation().GetShortName().Matches("dep|discourse|punct"))
{
continue;
}
else
{
// skip
insideNP.Add(child);
}
}
if (insideNP.Count == 0)
{
return(new IntPair(headwordIdx, headwordIdx));
}
// the headword is the only word
Pair <IndexedWord, IndexedWord> firstChildLeftRight = SemanticGraphUtils.LeftRightMostChildVertices(insideNP[0], dep);
Pair <IndexedWord, IndexedWord> lastChildLeftRight = SemanticGraphUtils.LeftRightMostChildVertices(insideNP[insideNP.Count - 1], dep);
// headword can be first or last word
int beginIdx = Math.Min(headwordIdx, firstChildLeftRight.first.Index() - 1);
int endIdx = Math.Max(headwordIdx, lastChildLeftRight.second.Index() - 1);
return(new IntPair(beginIdx, endIdx));
}
