nltk.stem.snowball.FrenchStemmer

class documentation

class FrenchStemmer(_StandardStemmer): (source)

Constructor: FrenchStemmer(ignore_stopwords)

The French Snowball stemmer.

Note
A detailed description of the French stemming algorithm can be found under http://snowball.tartarus.org/algorithms/french/stemmer.html

Method	`stem`	Stem a French word and return the stemmed form.
Method	`__rv_french`	Return the region RV that is used by the French stemmer.
Class Variable	`__step1_suffixes`	Suffixes to be deleted in step 1 of the algorithm.
Class Variable	`__step2a_suffixes`	Suffixes to be deleted in step 2a of the algorithm.
Class Variable	`__step2b_suffixes`	Suffixes to be deleted in step 2b of the algorithm.
Class Variable	`__step4_suffixes`	Suffixes to be deleted in step 4 of the algorithm.
Class Variable	`__vowels`	The French vowels.

Inherited from _StandardStemmer:

Method	`_r1r2_standard`	Return the standard interpretations of the string regions R1 and R2.
Method	`_rv_standard`	Return the standard interpretation of the string region RV.

Inherited from _LanguageSpecificStemmer (via _StandardStemmer):

Method	`__init__`	Undocumented
Method	`__repr__`	Print out the string representation of the respective class.
Instance Variable	`stopwords`	Undocumented

def stem(self, word): (source) ¶

overrides nltk.stem.api.StemmerI.stem

Stem a French word and return the stemmed form.

Parameters
word:str or unicode	The word that is stemmed.
Returns
unicode	The stemmed form.

def __rv_french(self, word, vowels): (source) ¶

Return the region RV that is used by the French stemmer.

If the word begins with two vowels, RV is the region after the third letter. Otherwise, it is the region after the first vowel not at the beginning of the word, or the end of the word if these positions cannot be found. (Exceptionally, u'par', u'col' or u'tap' at the beginning of a word is also taken to define RV as the region to their right.)

Parameters
word:str or unicode	The French word whose region RV is determined.
vowels:unicode	The French vowels that are used to determine the region RV.
Returns
unicode	the region RV for the respective French word.
Note
This helper method is invoked by the stem method of the subclass FrenchStemmer. It is not to be invoked directly!

__step1_suffixes: tuple = (source) ¶

Suffixes to be deleted in step 1 of the algorithm.

__step2a_suffixes: tuple = (source) ¶

Suffixes to be deleted in step 2a of the algorithm.

__step2b_suffixes: tuple = (source) ¶

Suffixes to be deleted in step 2b of the algorithm.

__step4_suffixes: tuple = (source) ¶

Suffixes to be deleted in step 4 of the algorithm.

__vowels: unicode = (source) ¶

The French vowels.