/**
* Collect a list of pairs of constituents with the same syntactic function
* from the left periphery of two sentences. The left periphery encompasses
* the subjects, front modifiers and cue phrases of the sentences.
*
* @param sentences
* the list of sentences
* @return a list of pairs of constituents with the same function, if any
* are found
*/
public static List <PhraseSet> leftPeriphery(List <INLGElement> sentences)
{
var funcsets = new List <PhraseSet>();
var cue = new PhraseSet(DiscourseFunction.CUE_PHRASE);
var front = new PhraseSet(DiscourseFunction.FRONT_MODIFIER);
var subj = new PhraseSet(DiscourseFunction.SUBJECT);
foreach (var s in sentences)
{
if (s.hasFeature(Feature.CUE_PHRASE.ToString()))
{
cue.addPhrases(s.getFeatureAsElementList(Feature.CUE_PHRASE.ToString()));
}
if (s.hasFeature(InternalFeature.FRONT_MODIFIERS.ToString()))
{
front
.addPhrases(s
.getFeatureAsElementList(InternalFeature.FRONT_MODIFIERS.ToString()));
}
if (s.hasFeature(InternalFeature.SUBJECTS.ToString()))
{
subj.addPhrases(s
.getFeatureAsElementList(InternalFeature.SUBJECTS.ToString()));
}
}
funcsets.Add(cue);
funcsets.Add(front);
funcsets.Add(subj);
return(funcsets);
}
/**
* Collect a list of pairs of constituents with the same syntactic function
* from the right periphery of two sentences. The right periphery
* encompasses the complements of the main verb, and its postmodifiers.
*
* @param sentences
* the list of sentences
* @return a list of pairs of constituents with the same function, if any
* are found
*/
public static List <PhraseSet> rightPeriphery(List <INLGElement> sentences)
{
var funcsets = new List <PhraseSet>();
var comps = new PhraseSet(DiscourseFunction.OBJECT);
// new PhraseSet(DiscourseFunction.INDIRECT_OBJECT);
var pmods = new PhraseSet(DiscourseFunction.POST_MODIFIER);
foreach (var s in sentences)
{
var vp = s.getFeatureAsElement(InternalFeature.VERB_PHRASE.ToString());
if (vp != null)
{
if (vp.hasFeature(InternalFeature.COMPLEMENTS.ToString()))
{
comps
.addPhrases(vp
.getFeatureAsElementList(InternalFeature.COMPLEMENTS.ToString()));
}
if (vp.hasFeature(InternalFeature.POSTMODIFIERS.ToString()))
{
pmods
.addPhrases(vp
.getFeatureAsElementList(InternalFeature.POSTMODIFIERS.ToString()));
}
}
if (s.hasFeature(InternalFeature.POSTMODIFIERS.ToString()))
{
pmods
.addPhrases(s
.getFeatureAsElementList(InternalFeature.POSTMODIFIERS.ToString()));
}
}
funcsets.Add(comps);
funcsets.Add(pmods);
return(funcsets);
}