xinranxiao / postagger

Parts of Speech Tagger

POSTagger

Part of Speech Tagger

Uses hidden markov models (HMM's) to classify parts of speech in sentences. Pretty basic implementation but CV shows ~95% accuracy which is pretty cool.

For the training data, we use the Brown corpus, using Natural Language Processing with Python as guidance.

Here are some examples of tags and their expansions:

Tag	Meaning	Examples
ADJ	adjective	new, good, high, special, big, local
ADV	adverb	really, already, still, early, now
CNJ	conjunction	and, or, but, if, while, although
DET	determiner	the, a, some, most, every, no
EX	existential	there, there's
FW	foreign word	dolce, ersatz, esprit, quo, maitre

App is currently hosted at: http://pos-tagger.herokuapp.com/ (endpoint: "api/v1/tagger", query param "?value=")

Example: http://pos-tagger.herokuapp.com/api/v1/tagger?value=hello%20my%20name%20is%20xinran