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* Add pos_tag method to Language

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This commit is contained in:
Matthew Honnibal 2014-11-02 14:21:43 +11:00
parent 99b5cefa88
commit fcd9490d56
2 changed files with 20 additions and 0 deletions
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4
spacy/lang.pxd
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@ -6,6 +6,7 @@ from cymem.cymem cimport Pool
from .typedefs cimport hash_t
from .tokens cimport Tokens
from .lexeme cimport Lexeme
from .pos cimport Tagger as PosTagger
from .utf8string cimport StringStore
@ -40,11 +41,14 @@ cdef class Language:
cdef PreshMap _specials
cpdef readonly Lexicon lexicon
cpdef readonly PosTagger pos_tagger
cdef object _prefix_re
cdef object _suffix_re
cdef object _infix_re
cpdef Tokens tokenize(self, unicode text)
cpdef Tokens pos_tag(self, Tokens t)
cdef int _tokenize(self, Tokens tokens, String* span, int start, int end) except -1
cdef String* _split_affixes(self, String* string, vector[Lexeme*] *prefixes,

16
spacy/lang.pyx
View File

@ -23,6 +23,8 @@ from . import util
from .util import read_lang_data
from .tokens import Tokens
from .pos cimport Tagger as PosTagger
cdef class Language:
def __init__(self, name):
@ -39,6 +41,10 @@ cdef class Language:
self.lexicon.load(path.join(util.DATA_DIR, name, 'lexemes'))
self.lexicon.strings.load(path.join(util.DATA_DIR, name, 'strings'))
self._load_special_tokenization(rules)
if path.exists(path.join(util.DATA_DIR, name, 'pos')):
self.pos_tagger = PosTagger(path.join(util.DATA_DIR, name, 'pos'))
else:
self.pos_tagger = None
cpdef Tokens tokenize(self, unicode string):
"""Tokenize a string.
@ -87,6 +93,16 @@ cdef class Language:
self._tokenize(tokens, &span, start, i)
return tokens
cpdef Tokens pos_tag(self, Tokens t):
if self.pos_tagger is None:
return t
cdef int i
t.pos[-1] = self.pos_tagger.encode_pos('EOL')
t.pos[-2] = self.pos_tagger.encode_pos('EOL')
for i in range(t.length):
t.pos[i] = self.pos_tagger.predict(i, t, t.pos[i-1], t.pos[i-2])
return t
cdef int _tokenize(self, Tokens tokens, String* span, int start, int end) except -1:
cdef vector[Lexeme*] prefixes
cdef vector[Lexeme*] suffixes