Package nltk :: Package stem :: Module lancaster :: Class LancasterStemmer

Class LancasterStemmer

  object --+    
           |    
api.StemmerI --+
               |
              LancasterStemmer

Known Subclasses:

Lancaster

Instance Methods

[hide private]

__init__(self)
Create an instance of the Lancaster stemmer.

source code

parseRules(self, rule_tuple)
Validate the set of rules used in this stemmer.

source code

stem(self, word)
Stem a word using the Lancaster stemmer.

source code

__doStemming(self, word, intact_word)
Perform the actual word stemming

source code

__getLastLetter(self, word)
Get the zero-based index of the last alphabetic character in this string

source code

__isAcceptable(self, word, remove_total)
Determine if the word is acceptable for stemming.

source code

__applyRule(self, word, remove_total, append_string)
Apply the stemming rule to the word

source code

__repr__(self)
repr(x)

source code

Inherited from object: __delattr__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __setattr__, __str__

Class Variables

[hide private]

rule_tuple = ('ai*2.', 'a*1.', 'bb1.', 'city3s.', 'ci2>', 'cn1...

Properties

[hide private]

Inherited from object: __class__

Method Details

[hide private]

init(self)
(Constructor)

source code

Create an instance of the Lancaster stemmer.

Overrides: object.__init__

stem(self, word)

source code

Stem a word using the Lancaster stemmer.

Parameters:

token - The token that should be stemmed.

Overrides: api.StemmerI.stem

repr(self)
(Representation operator)

source code

repr(x)

Overrides: object.__repr__: (inherited documentation)

Class Variable Details

[hide private]

rule_tuple

Value:

('ai*2.',
 'a*1.',
 'bb1.',
 'city3s.',
 'ci2>',
 'cn1t>',
 'dd1.',
 'dei3y>',
...

Class LancasterStemmer

__init__(self) (Constructor)

stem(self, word)

__repr__(self) (Representation operator)

rule_tuple

init(self)
(Constructor)

repr(self)
(Representation operator)