Package smile.nlp.pos

Enum Class PennTreebankPOS

java.lang.Object
java.lang.Enum<PennTreebankPOS>
smile.nlp.pos.PennTreebankPOS
All Implemented Interfaces:
Serializable, Comparable<PennTreebankPOS>, Constable
public enum PennTreebankPOS extends Enum<PennTreebankPOS>
The Penn Treebank Tag set.

  • Enum Constant Details

    • CC

      public static final PennTreebankPOS CC
      Coordinating conjunction. This category includes and, but, nor, or, yet (as in Yet it's cheap, cheap yet good), as well as the mathematical operators plus, minus, less, times (in the sense of "multiplied by") and over (in the sense of "divided by"), when they are spelled out. FOR in the sense of "because" is a coordinating conjunction (CC) rather than a subordinating conjunction (IN) -

      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).

    • CD

      public static final PennTreebankPOS CD
      Cardinal number.

    • DT

      public static final PennTreebankPOS DT
      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).

    • EX

      public static final PennTreebankPOS EX
      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.

    • FW

      public static final PennTreebankPOS FW
      Foreign word.

    • IN

      public static final PennTreebankPOS IN
      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.

    • JJ

      public static final PennTreebankPOS JJ
      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.

    • JJR

      public static final PennTreebankPOS JJR
      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.

    • JJS

      public static final PennTreebankPOS JJS
      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.

    • LS

      public static final PennTreebankPOS LS
      List item marker. This category includes letters and numerals when they are used to identify items in a list.

    • MD

      public static final PennTreebankPOS MD
      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.

    • NN

      public static final PennTreebankPOS NN
      Noun, singular or mass.

    • NNS

      public static final PennTreebankPOS NNS
      Noun, plural.

    • NNP

      public static final PennTreebankPOS NNP
      Proper noun, singular.

    • NNPS

      public static final PennTreebankPOS NNPS
      Proper noun, plural.

    • PDT

      public static final PennTreebankPOS PDT
      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

    • POS

      public static final PennTreebankPOS POS
      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

    • PRP

      public static final PennTreebankPOS PRP
      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$

      public static final PennTreebankPOS PRP$
      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).

    • RB

      public static final PennTreebankPOS RB
      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.

    • RBR

      public static final PennTreebankPOS RBR
      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.

    • RBS

      public static final PennTreebankPOS RBS
      Adverb, superlative.

    • RP

      public static final PennTreebankPOS RP
      Particle. This category includes a number of mostly monosyllabic words that also double as directional adverbs and prepositions.

    • SYM

      public static final PennTreebankPOS SYM
      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 be 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.

    • TO

      public static final PennTreebankPOS TO
      to.

    • UH

      public static final PennTreebankPOS UH
      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.

    • VB

      public static final PennTreebankPOS VB
      Verb, base form. This tag subsumes imperatives, infinitives and subjunctives.

    • VBD

      public static final PennTreebankPOS VBD
      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, ...

    • VBG

      public static final PennTreebankPOS VBG
      Verb, gerund or present participle.

    • VBN

      public static final PennTreebankPOS VBN
      Verb, past participle.

    • VBP

      public static final PennTreebankPOS VBP
      Verb, non-3rd person singular present.

    • VBZ

      public static final PennTreebankPOS VBZ
      Verb, 3rd person singular present.

    • WDT

      public static final PennTreebankPOS WDT
      Wh-determiner. This category includes which, as well as that when it is used as a relative pronoun.

    • WP

      public static final PennTreebankPOS WP
      Wh-pronoun. This category includes what, who and whom.

    • WP$

      public static final PennTreebankPOS WP$
      Possessive wh-pronoun. This category includes the wh-word whose.

    • WRB

      public static final PennTreebankPOS WRB
      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.

    • $

      public static final PennTreebankPOS $
      Punctuation $

    • SENT

      public static final PennTreebankPOS SENT
      Sentence-break punctuation . ? !

    • POUND

      public static final PennTreebankPOS POUND
      Punctuation #

    • DASH

      public static final PennTreebankPOS DASH
      Punctuation -

    • COMMA

      public static final PennTreebankPOS COMMA
      Punctuation ,

    • COLON

      public static final PennTreebankPOS COLON
      Punctuation ; : ...

    • OPENING_PARENTHESIS

      public static final PennTreebankPOS OPENING_PARENTHESIS
      Punctuation ( [ {

    • CLOSING_PARENTHESIS

      public static final PennTreebankPOS CLOSING_PARENTHESIS
      Punctuation ) ] }

    • OPENING_QUOTATION

      public static final PennTreebankPOS OPENING_QUOTATION
      Punctuation ` or ``

    • CLOSING_QUOTATION

      public static final PennTreebankPOS CLOSING_QUOTATION
      Punctuation ' or ''

  • Field Details

    • open

      public final boolean open
      True if the POS is an open class.

  • Method Details

    • values

      public static PennTreebankPOS[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static PennTreebankPOS valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null

    • getValue

      public static PennTreebankPOS getValue(String value)
      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.
      Parameters:
      value - the string value.
      Returns:
      the enum value.