Nltk

nltk

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1: nltk

NLTKPython50 WordNetNLP

PythonNLTKPythonPython 3NLTK 3Python 2

NLTK

3.2.4 2017521 3.2 201633 3.1

Examples

NLTK

NLTKnltk.tokenize

import nltk text = "This is a test. Let's try this sentence boundary detector." text_output = nltk.tokenize.sent_tokenize(text) print('text_output: {0}'.format(text_output))

text_output: ['This is a test.', "Let's try this sentence boundary detector."]

NLTKPython2.73.4+ python - 3.5

? Mac / Unix 1. NLTKsudo pip install -U nltk 2. Numpysudo pip install -U numpy 3. pythonimport nltk

Pythonsetuptools easy_install pip

? Windows



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Python 32

1. Python 3.5 http //downloads/ 64 2. Numpy http //projects/numpy/files/NumPy/ pythnon3.5 3. NLTK http //pypi.pypi/nltk 4. Start>Python35 import nltk

? https //nltk/nltk/wiki/Installing-Third-Party-Software

http //install.html

NLTK

pipNLTK pip install nltk NLTK Python shellntlk.download()UIpython -m nltk.downloader [package_name]

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nltk.download('all')

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nltk.download('package-name')

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import nltk

dwlr = nltk.downloader.Downloader()

# chunkers, corpora, grammars, help, misc, # models, sentiment, stemmers, taggers, tokenizers for pkg in dwlr.packages():

if pkg.subdir== 'taggers': dwlr.download(pkg.id)

? Corpora

import nltk dwlr = nltk.downloader.Downloader() for pkg in dwlr.corpora():



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