static IList <Coreference> GetCoReferences(XElement document,
IList <Sentence> Sentences)
{
List <Coreference> result = new List <Coreference>();
var coreferences = from c in document.Elements("document").Elements("coreference").Elements("coreference")
select c;
foreach (var item in coreferences)
{
var co = new Coreference();
var mentions = from c in item.Elements("mention")
select c;
Mention root = null;
foreach (var mention in mentions)
{
var m = new Mention();
m.Read(mention, Sentences);
m.Head = Sentences.Where(c => c.Id == m.Sentence).First().Tokens.Where(c => c.SentenceLoc == m.HeadLoc).First();
if (mention.Attributes("representative").Count() != 0)
{
co.Root = m;
root = m;
}
else
{
m.Root = root;
co.Mentions.Add(m);
}
}
result.Add(co);
}
var Roots = result.Select(c => c.Root).ToList();
//obtain non root mention and avoid recursive mentions
foreach (var coreference in result)
{
foreach (var mention in coreference.Mentions)
{
if (Roots.Where(c => c.Contains(mention)).Count() > 0)
{
mention.Enable = false;
}
}
}
return(result);
}
public bool Contains(Mention mention)
{
return(this.Sentence == mention.Sentence && this.Start <= mention.Start && this.End >= mention.End);
}