Cheat Sheet for Biomedical Part of Speech Tag Labels

$

Dollar Sign (rare in biomedical text)

,

Comma

.

Period

:

Colon, semi-colon, and dash ('-' or '--' separating parts of a sentence)

``

Opening Quotation Marks (single or double)

''

Closing Quotation Marks (single or double)

AFX

Affix; used in instances such as non-, anti-, and pro- (but not -like).

CC

Coordinating Conjunctions

CD

Cardinal Number

DT

Determiner

EX

Existential there, not referring to place, as in "there were"

FW

Foreign Word; ex. in vitro, in vivo, corpora lutea (all /FW /FW)

HYPH

Used to denote the following:

n         An English hyphen (more-or-less normal punctuation): "concentration-response"

n         A range indicator : "200-230"

NOTE: Function was formerly called #

IN

Preposition or Subordinating Conjunction

JJ

Adjective

JJR

Comparative Adjective

JJS

Superlative Adjective

-LRB-

"(", "[" and "{"

LS

List Item Marker; letters, numerals, and bullets used to identify list items

MD

Modal Verb; can, could, may, might, must, ought, shall, will, would

NN

Singular Noun

NNP

Singular Proper Noun

NNPS

Plural Proper Noun

NNS

Plural Noun

PDT

Pre-Determiner

POS

Possessive Ending (rare in biomedical text)

PRP

Personal Pronoun

PRP$

Possessive Pronoun

RB

Adverb

RBR

Comparative Adverb

RBS

Superlative Adverb

RP

Particle

-RRB-

")", "]" and "}"

SYM

Symbol: "-" (negative or subtraction), +, *, /, <, >, =, +/-, Greek letter names

TO

The word "to"

Token

Tokenizer Tag – no POS assigned

UH

Interjection (rare in biomedical text)

VB

Base Form Verb

VBD

Past Tense Verb

VBG

Gerund or Past Participle Verb

VBN

Past Participle Verb

VBP

Non-3^rd Person Singular Present Verb

VBZ

3^rd Person Singular Present Verb

WDT

WH-Determiner

WP

WH-Pronoun

WP$

Possessive WH-Pronoun

WRB

WH-Adverb