28 lines
751 B
Python
28 lines
751 B
Python
# Natural Language Toolkit: Stemmer Interface
|
|
#
|
|
# Copyright (C) 2001-2018 NLTK Project
|
|
# Author: Trevor Cohn <tacohn@cs.mu.oz.au>
|
|
# Edward Loper <edloper@gmail.com>
|
|
# Steven Bird <stevenbird1@gmail.com>
|
|
# URL: <http://nltk.org/>
|
|
# For license information, see LICENSE.TXT
|
|
|
|
from abc import ABCMeta, abstractmethod
|
|
from six import add_metaclass
|
|
|
|
|
|
@add_metaclass(ABCMeta)
|
|
class StemmerI(object):
|
|
"""
|
|
A processing interface for removing morphological affixes from
|
|
words. This process is known as stemming.
|
|
|
|
"""
|
|
@abstractmethod
|
|
def stem(self, token):
|
|
"""
|
|
Strip affixes from the token and return the stem.
|
|
|
|
:param token: The token that should be stemmed.
|
|
:type token: str
|
|
"""
|