smile.nlp.pos.PennTreebankPOS Maven / Gradle / Ivy
/*
* Copyright (c) 2010-2021 Haifeng Li. All rights reserved.
*
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* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
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*
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* along with Smile. If not, see
* He asked to be transferred, for/CC he was unhappy.
*
* SO in the sense of "so that," on the other hand, is a subordinating
* conjunction (IN).
*/
CC(false),
/**
* Cardinal number.
*/
CD(true),
/**
* Determiner. This category includes the articles a(n), every, no and the,
* the indefinite determiners another, any and some, each, either (as in
* either way), neither (as in neither decision), that, these, this and
* those, and instances of all and both when they do not precede a
* determiner or possessive pronoun (as in all roads or both times).
* (Instances of all or both that do precede a determiner or possessive
* pronoun are tagged as predeterminers (PDT).) Since any noun phrase can
* contain at most one determiner, the fact that such can occur together
* with a determiner (as in the only such case) means that it should be
* tagged as an adjective (JJ), unless it precedes a determiner, as in such
* a good time, in which case it is a predeterminer (PDT).
*/
DT(false),
/**
* Existential there. Existential there is the unstressed there that
* triggers inversion of the inflected verb and the logical subject of
* a sentence. Examples:
*
* There/EX was a party in progress.
*
* There/EX ensued a melee.
*/
EX(false),
/**
* Foreign word.
*/
FW(true),
/**
* Preposition or subordinating conjunction. We make no explicit distinction
* between prepositions and subordinating conjunctions. (The distinction is
* not lost, however -- a preposition is an IN that precedes a noun phrase
* or a prepositional phrase, and a subordinate conjunction is an IN that
* precedes a clause.) The preposition to has its own special tag TO.
*/
IN(false),
/**
* Adjective. Hypenated compounds that are used as modifiers, like
* happy-go-lucky, one-of-a-kind and run-of-the-mill, are tagged as JJ.
* Ordinal numbers are tagged as JJ, as are compounds of the form n-th
* x-est, like fourth-largest.
*/
JJ(true),
/**
* Adjective, comparative. Adjectives with the comparative ending -er and
* a comparative meaning. Adjectives with a comparative meaning but without
* the comparative ending -er, like superior, should simply be tagged as JJ.
* Adjectives with the ending -er but without a strictly comparative meaning,
* like further in further details, should also simply be tagged as JJ.
*/
JJR(true),
/**
* Adjective, superlative. Adjectives with the superlative ending -est.
* Adjectives with a superlative meaning but without the superlative ending
* -est, like first, last or unsurpassed, should simply be tagged as JJ.
*/
JJS(true),
/**
* List item marker. This category includes letters and numerals when
* they are used to identify items in a list.
*/
LS(true),
/**
* Modal verb. This category includes all verbs that don't take an -s
* ending in the third person singular present: can, could, (dare), may,
* might, must, ought, shall, should, will, would.
*/
MD(false),
/**
* Noun, singular or mass.
*/
NN(true),
/**
* Noun, plural.
*/
NNS(true),
/**
* Proper noun, singular.
*/
NNP(true),
/**
* Proper noun, plural.
*/
NNPS(true),
/**
* Predeterminer. This category includes the following determinerlike
* elements when they precede an article or possessive pronoun. Examples:
*
* all/PDT his marbles
*
* nary/PDT a soul
*
* both/PDT the girls
*
* quite/PDT a mess
*
* half/PDT his time
*
* rather/PDT a nuisance
*
* many/PDT a moon
*
* such/PDT a good time
*/
PDT(false),
/**
* Possessive ending. The possessive ending on nouns ending in 's or ' is
* split off by the tagging algorithm and tagged as if it were a separate word.
* Examples:
*
* JohnINP 's/POS idea
*
* the parents/NNS '/POS distress
*/
POS(false),
/**
* Personal pronoun. This category includes the personal pronouns proper,
* without regard for case distinctions (I, me, you, he, him, etc.), the
* reflexive pronouns ending in -selfor -selves, and the nominal possessive
* pronouns mine, yours, his, hers, ours and theirs. The adjectival
* possessive forms my, your, his, her, its, our and their, on the other
* hand, are tagged PP$.
*/
PRP(false),
/**
* Possessive pronoun. This category includes the adjectival possessive
* forms my, your, his, her, ids, one's, our and their. The nominal
* possessive pronouns mine, yours, his, hers, ours and theirs are tagged
* as personal pronouns (PP).
*/
PRP$(false),
/**
* Adverb. This category includes most words that end in -ly as well as
* degree words like quite, too and very, posthead modifiers like enough
* and indeed (as in good enough, very well indeeed), and negative markers
* like not, n't, and never.
*/
RB(true),
/**
* Adverb, comparative. Adverbs with the comparative ending -er but without
* a strictly comparative meaning, like later in "We can always come by
* later", should simply be tagged as RB.
*/
RBR(true),
/**
* Adverb, superlative.
*/
RBS(true),
/**
* Particle. This category includes a number of mostly monosyllabic words
* that also double as directional adverbs and prepositions.
*/
RP(false),
/**
* Symbol. This includes / [ = *, #, etc. This tag should be used for
* mathematical, scientific and technical symbols or expressions that
* aren't words of English. It should not used for any and all technical
* expressions. For instance, the names of chemicals, units of measurements
* (including abbreviations thereof) and the like should be tagged as nouns.
*/
SYM(true),
/**
* to.
*/
TO(false),
/**
* Interjection. This category includes my (as in My, what a gorgeous day),
* oh, please, see (as in See, it's like this), ah, well and yes, among others.
*/
UH(true),
/**
* Verb, base form. This tag subsumes imperatives, infinitives and subjunctives.
*/
VB(true),
/**
* Verb, past tense. This category includes the conditional form of the verb to be.
* Examples:
*
* If I were/VBD rich, ...
*
* If I were/VBD to win the lottery, ...
*/
VBD(true),
/**
* Verb, gerund or present participle.
*/
VBG(true),
/**
* Verb, past participle.
*/
VBN(true),
/**
* Verb, non-3rd person singular present.
*/
VBP(true),
/**
* Verb, 3rd person singular present.
*/
VBZ(true),
/**
* Wh-determiner. This category includes which, as well as that when it is
* used as a relative pronoun.
*/
WDT(false),
/**
* Wh-pronoun. This category includes what, who and whom.
*/
WP(false),
/**
* Possessive wh-pronoun. This category includes the wh-word whose.
*/
WP$(false),
/**
* Wh-adverb. This category includes how, where, why, etc. When in a
* temporal sense is tagged WRB. In the sense of "if," on the other hand,
* it is a subordinating conjunction (IN). Examples:
*
* When/WRB he finally arrived, I was on my way out.
*
* I like it when/IN you make dinner for me.
*/
WRB(false),
/**
* Punctuation $
*/
$(false),
/**
* Sentence-break punctuation . ? !
*/
SENT(false) {
@Override
public String toString() {
return ".";
}
},
/**
* Punctuation #
*/
POUND(false) {
@Override
public String toString() {
return "#";
}
},
/**
* Punctuation -
*/
DASH(false) {
@Override
public String toString() {
return "-";
}
},
/**
* Punctuation ,
*/
COMMA(false) {
@Override
public String toString() {
return ",";
}
},
/**
* Punctuation ; : ...
*/
COLON(false) {
@Override
public String toString() {
return ":";
}
},
/**
* Punctuation ( [ {
*/
OPENING_PARENTHESIS(false) {
@Override
public String toString() {
return "(";
}
},
/**
* Punctuation ) ] }
*/
CLOSING_PARENTHESIS(false) {
@Override
public String toString() {
return ")";
}
},
/**
* Punctuation ` or ``
*/
OPENING_QUOTATION(false) {
@Override
public String toString() {
return "``";
}
},
/**
* Punctuation ' or ''
*/
CLOSING_QUOTATION(false) {
@Override
public String toString() {
return "''";
}
};
/**
* True if the POS is a open class.
*/
public final boolean open;
/**
* Constructor.
*/
PennTreebankPOS(boolean open) {
this.open = open;
}
/**
* Map of punctuation to its enum string value.
*/
private static final Map map;
static {
map = new HashMap<>();
map.put(".", "SENT");
map.put("?", "SENT");
map.put("!", "SENT");
map.put("#", "POUND");
map.put("-", "DASH");
map.put(",", "COMMA");
map.put(";", "COLON");
map.put(":", "COLON");
map.put("...", "COLON");
map.put("(", "OPENING_PARENTHESIS");
map.put("[", "OPENING_PARENTHESIS");
map.put("{", "OPENING_PARENTHESIS");
map.put(")", "CLOSING_PARENTHESIS");
map.put("]", "CLOSING_PARENTHESIS");
map.put("}", "CLOSING_PARENTHESIS");
map.put("`", "OPENING_QUOTATION");
map.put("``", "OPENING_QUOTATION");
map.put("'", "CLOSING_QUOTATION");
map.put("''", "CLOSING_QUOTATION");
}
/**
* Returns an enum value from a string. Note that valueOf cannot be
* overridden so we have to use this workaround for converting custom
* strings to enum values without using valueOf method.
*
* @param value the string value.
* @return the enum value.
*/
public static PennTreebankPOS getValue(String value) {
String s = map.get(value);
return valueOf(s == null ? value : s);
}
}