jsPOS

jsPOS is a Javascript port of Mark Watson's FastTag Part of Speech Tagger which was itself based on Eric Brill's trained rule set and English lexicon. jsPOS also includes a basic lexer that can be used to extract words and other tokens from text strings.

FILES

• lexicon.js - Javascript version of Eric Brill's English lexicon
• lexer.js - Lexer to break a sentence into taggable tokens (e.g. words)
• POSTagger.js - the Part of Speech tagger.

USAGE

See demo in demos/simple/.

var words = new Lexer().lex("This is some sample text. This text can contain multiple sentences.");
var taggedWords = new POSTagger().tag(words);
for (i in taggedWords) {
    var taggedWord = taggedWords[i];
    var word = taggedWord[0];
    var tag = taggedWord[1];
}

node.js

See demo using vows testing in test/

You can install jspos in your project (once jsPOS is published to npm) with this command: npm install jspos. You can use it in your code, like this:

var jspos = require('jspos'),
  lexer =  new jspos.Lexer(),
  tagger = new jspos.POSTagger();

var tags = tagger.tag(lexer.lex("This is some text. It can be whatever length. Cool!"));
console.log(tags);

require.js

See demo in demos/simple_with_require/.

define(['jspos/lib/post_tagger', 'jspos/lib/lexer'], function(POSTagger, Lexer){
  var lexer =  new Lexer(),
      tagger = new POSTagger();

  var tags = tagger.tag(lexer.lex("This is some text. It can be whatever length. Cool!"));
  console.log(tags)
});

developer tools

There are a few tools linked to npm, via package.json:

• npm install - install all dependencies
• npm test - test the library
• npm start - start the demo webserver
• node build.js - creates a minified version of the library (for the web) in jspos.min.js

TAGS

CC    Coord Conjuncn           and,but,or
CD    Cardinal number          one,two
DT    Determiner               the,some
EX    Existential there        there
FW    Foreign Word             mon dieu
IN    Preposition              of,in,by
JJ    Adjective                big
JJR   Adj., comparative        bigger
JJS   Adj., superlative        biggest
LS    List item marker         1,One
MD    Modal                    can,should
NN    Noun, sing. or mass      dog
NNP   Proper noun, sing.       Edinburgh
NNPS  Proper noun, plural      Smiths
NNS   Noun, plural             dogs
POS   Possessive ending        's
PDT   Predeterminer            all,both
PP$   Possessive pronoun       my,one's
PRP   Personal pronoun         I,you,she
RB    Adverb                   quickly
RBR   Adverb, comparative      faster
RBS   Adverb, superlative      fastest
RP    Particle                 up,off
SYM   Symbol                   +,%,&
TO    ?to?                     to
UH    Interjection             oh,oops
VB    verb, base form          eat
VBD   verb, past tense         ate
VBG   verb, gerund             eating
VBN   verb, past part          eaten
VBP   Verb, present            eat
VBZ   Verb, present            eats
WDT   Wh-determiner            which,that
WP    Wh pronoun               who,what
WP$   Possessive-Wh            whose
WRB   Wh-adverb                how,where
,     Comma                    ,
.     Sent-final punct         .,!,?
:     Mid-sent punct.          :,;
$     Dollar sign              $
#     Pound sign               #
"     quote                    "
(     Left paren                (
)     Right paren               )

LICENSE

jsPOS is licensed under the GNU LGPLv3

ACKNOWLEDGEMENTS

Thanks to Mark Watson for writing FastTag, which served as the basis for jsPOS.

AUTHOR

Percy Wegmann

The orignal of this code is avallable on google code

Kieren Diment zarquon@cpan.org added the demo.html and main.js files.

David Konsumer konsumer@jetboystudio.com updated demos, documentation & added npm/node/require.js support

The next step is to add noun phrase extraction routines and other utility functions (see the Perl Module Lingua::EN::Tagger ).