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Vocabulary management for NLP in Python.

Project description

Documentation Status https://travis-ci.org/vzhong/vocab.svg?branch=master

Vocab is a python package that provides vocabulary objects for natural language processing.

Installation

pip install vocab
pip install git+https://github.com/vzhong/vocab.git

Usage

>>> from vocab import Vocab, UnkVocab
>>> v = Vocab()
>>> v.word2index('hello', train=True)
0
>>> v.word2index(['hello', 'world'], train=True)
[0, 1]
>>> v.index2word([1, 0])
['world', 'hello']
>>> v.index2word(1)
'world'
>>> small = v.prune_by_count(2)
>>> small.to_dict()
{'counts': {'hello': 2}, 'index2word': ['hello']}
>>> u = UnkVocab()
>>> u.word2index(['hello', 'world'], train=True)
[1, 2]
>>> u.word2index('hello friend !'.split())
[1, 0, 0]
>>> u.index2word(0)
'<unk>'

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