public static string GetPhraseText(this IEnumerable <ReversedToken> list)
{
if (list != null)
{
var builder = new StringBuilder();
ReversedToken lastToken = null;
foreach (var token in list)
{
var firstChar = token.OriginalToken.Text.Content[0];
switch (firstChar)
{
case '-':
case '!':
case '?':
case '\'':
case '.':
case ',':
builder.Append(token.OriginalToken.Text.Content);
break;
default:
if (builder.Length > 0 && lastToken != null && lastToken.OriginalToken.Text.Content != "-")
{
builder.Append(" ");
}
builder.Append(token.OriginalToken.Text.Content);
break;
}
lastToken = token;
}
return(builder.ToString());
}
return(null);
}
public static List <string> AddIfNotNull(this List <string> list, ReversedToken element)
{
if (element != null)
{
list.Add(element.OriginalToken.Text.Content);
}
return(list);
}
public static string GetTokenText(ReversedToken reversedToken)
{
return(reversedToken?.OriginalToken?.Text?.Content ?? "Unknown");
}
public static SentenceSummary SummarizeSpecialQuestion(List <ReversedToken> reverseTokens)
{
var root = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Root);
var rootRedirection = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Prep && root.Relations.Any(rel => rel == x.OriginalToken));
var type = root.Relations.FirstOrDefault(x => x.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Verb || x.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Adv || x.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Det);
var subject = reverseTokens.FirstOrDefault(x => x.OriginalToken.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Pron && x.Relations.Any(rel => rel == root.OriginalToken));
if (subject == null)
{
subject = reverseTokens.FirstOrDefault(x => x.OriginalToken.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Noun && root.Relations.Any(rel => rel == x.OriginalToken));
if (subject == null)
{
subject = root;
}
}
else if (rootRedirection != null && subject.OriginalToken.PartOfSpeech.Tag == PartOfSpeech.Types.Tag.Pron)
{
subject = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Pobj && rootRedirection.Relations.Any(rel => rel == x.OriginalToken));
}
var subjectSpecificationPointer = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Prep && subject.Relations.Any(rel => rel == x.OriginalToken));
ReversedToken subjectSpecification = null;
if (subjectSpecificationPointer != null)
{
subjectSpecification = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Pobj && subjectSpecificationPointer.Relations.Any(rel => rel == x.OriginalToken));
}
else
{
subjectSpecification = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Nn && subject.Relations.Any(rel => rel == x.OriginalToken));
}
if (subjectSpecification == null)
{
subjectSpecification = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Amod && subject.Relations.Any(rel => rel == x.OriginalToken));
}
var subjectOwner = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Poss && subject.Relations.Any(rel => rel == x.OriginalToken));
ReversedToken subjectSpecificationOwner = null;
if (subjectSpecification != null)
{
subjectSpecificationOwner = reverseTokens.FirstOrDefault(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Nn && subjectSpecification.Relations.Any(rel => rel == x.OriginalToken));
}
var ownerAlternatives = new List <ReversedToken>()
{
subjectOwner, subjectSpecificationOwner
};
var ownerCanBeEitherAlternative = false;
if (subjectOwner != null)
{
ownerAlternatives.AddRange(reverseTokens.Where(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Conj && subjectOwner.Relations.Any(rel => rel == x.OriginalToken)));
if (ownerAlternatives.Any())
{
ownerCanBeEitherAlternative = reverseTokens.Any(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Cc && x.OriginalToken.Text.Content.Equals("or", StringComparison.InvariantCultureIgnoreCase) && subjectOwner.Relations.Any(rel => rel == x.OriginalToken));
}
}
if (subjectSpecificationOwner != null)
{
ownerAlternatives.AddRange(reverseTokens.Where(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Conj && subjectSpecificationOwner.Relations.Any(rel => rel == x.OriginalToken)));
if (ownerAlternatives.Any())
{
ownerCanBeEitherAlternative = reverseTokens.Any(x => x.OriginalToken.DependencyEdge.Label == DependencyEdge.Types.Label.Cc && x.OriginalToken.Text.Content.Equals("or", StringComparison.InvariantCultureIgnoreCase) && subjectSpecificationOwner.Relations.Any(rel => rel == x.OriginalToken));
}
}
var alternativeModifierText = ownerAlternatives.Count > 1 ? (ownerCanBeEitherAlternative ? " any" : " all") : "";
var specialQuestion = new SpecialQuestion
{
Subject = subject,
SubjectSpecification = subjectSpecification,
ResponseOwnershipRestrictionAlternatives = ownerAlternatives,
ResponseOwnershipRestrictionAnyAlternative = ownerCanBeEitherAlternative,
};
return(new SentenceSummary
{
KeyWords = new List <string>()
.AddIfNotNull(root)
.AddIfNotNull(subject)
.AddIfNotNull(subjectSpecification)
.AddIfNotNull(ownerAlternatives),
Phrase = reverseTokens,
Names = TextAnalysisUtils.FindNames(reverseTokens),
Type = SentenceType.SpecialQuestion,
SpecialQuestion = specialQuestion
});
}