public SemanticHeadFinder(TreebankLanguagePack tlp, boolean cop) {
super(tlp);
ruleChanges();
// make a distinction between auxiliaries and copular verbs to
// get the NP has semantic head in sentences like "Bill is an honest man".
verbalAuxiliaries = new HashSet<String>();
verbalAuxiliaries.addAll(
Arrays.asList(
new String[] {
"will", "wo", "shall", "may", "might", "should", "would", "can", "could", "ca",
"must", "has", "have", "had", "having", "be", "being", "been", "get", "gets",
"getting", "got", "gotten", "do", "does", "did", "to", "'ve", "'d", "'ll"
}));
// copular verbs having an NP complement
copulars = new HashSet<String>();
if (cop) {
copulars.addAll(
Arrays.asList(
new String[] {
"be",
"being",
"Being",
"am",
"are",
"is",
"was",
"were",
"'m",
"'re",
"'s",
"s",
"seem",
"seems",
"seemed",
"appear",
"appears",
"appeared",
"stay",
"stays",
"stayed",
"remain",
"remains",
"remained",
"resemble",
"resembles",
"resembled",
"become",
"becomes",
"became"
}));
} // a few times the apostrophe is missing on "'s"
verbalTags = new HashSet<String>();
// include Charniak tags so can do BLLIP right
verbalTags.addAll(
Arrays.asList(
new String[] {"TO", "MD", "VB", "VBD", "VBP", "VBZ", "VBG", "VBN", "AUX", "AUXG"}));
}
/**
* Create a SemanticHeadFinder.
*
* @param tlp The TreebankLanguagePack, used by the superclass to get basic category of
* constituents.
* @param cop If true, a copular verb (be, seem, appear, stay, remain, resemble, become) is not
* treated as head when it has an AdjP or NP complement. If false, a copula verb is still
* always treated as a head. But it will still be treated as an auxiliary in periphrastic
* tenses with a VP complement.
*/
public SemanticHeadFinder(TreebankLanguagePack tlp, boolean cop) {
super(tlp);
ruleChanges();
// make a distinction between auxiliaries and copula verbs to
// get the NP has semantic head in sentences like "Bill is an honest man". (Added "sha" for
// "shan't" May 2009
verbalAuxiliaries = new HashSet<String>();
verbalAuxiliaries.addAll(Arrays.asList(auxiliaries));
passiveAuxiliaries = new HashSet<String>();
passiveAuxiliaries.addAll(Arrays.asList(beGetVerbs));
// copula verbs having an NP complement
copulars = new HashSet<String>();
if (cop) {
copulars.addAll(Arrays.asList(copulaVerbs));
} // a few times the apostrophe is missing on "'s"
verbalTags = new HashSet<String>();
// include Charniak tags so can do BLLIP right
verbalTags.addAll(Arrays.asList(verbTags));
}