spaCy/spacy/lexeme.pyx
2015-11-03 23:47:59 +11:00

193 lines
6.6 KiB
Cython

# cython: embedsignature=True
from cpython.ref cimport Py_INCREF
from cymem.cymem cimport Pool
from murmurhash.mrmr cimport hash64
# Compiler crashes on memory view coercion without this. Should report bug.
from cython.view cimport array as cvarray
cimport numpy as np
np.import_array()
from libc.string cimport memset
from .orth cimport word_shape
from .typedefs cimport attr_t, flags_t
import numpy
from .attrs cimport IS_ALPHA, IS_ASCII, IS_DIGIT, IS_LOWER, IS_PUNCT, IS_SPACE
from .attrs cimport IS_TITLE, IS_UPPER, LIKE_URL, LIKE_NUM, LIKE_EMAIL, IS_STOP
from .attrs cimport IS_OOV
memset(&EMPTY_LEXEME, 0, sizeof(LexemeC))
cdef class Lexeme:
"""An entry in the vocabulary. A Lexeme has no string context --- it's a
word-type, as opposed to a word token. It therefore has no part-of-speech
tag, dependency parse, or lemma (lemmatization depends on the part-of-speech
tag).
"""
def __init__(self, Vocab vocab, int orth):
self.vocab = vocab
self.orth = orth
self.c = <LexemeC*><void*>vocab.get_by_orth(vocab.mem, orth)
assert self.c.orth == orth
def set_flag(self, attr_id_t flag_id, bint value):
Lexeme.c_set_flag(self.c, flag_id, value)
def check_flag(self, attr_id_t flag_id):
return True if Lexeme.c_check_flag(self.c, flag_id) else False
def similarity(self, other):
if self.vector_norm == 0 or other.vector_norm == 0:
return 0.0
return numpy.dot(self.vector, other.vector) / (self.vector_norm * other.vector_norm)
property has_vector:
def __get__(self):
cdef int i
for i in range(self.vocab.vectors_length):
if self.c.vector[i] != 0:
return True
else:
return False
property vector_norm:
def __get__(self):
return self.c.l2_norm
def __set__(self, float value):
self.c.l2_norm = value
property vector:
def __get__(self):
cdef int length = self.vocab.vectors_length
if length == 0:
raise ValueError(
"Word vectors set to length 0. This may be because the "
"data is not installed. If you haven't already, run"
"\npython -m spacy.en.download all\n"
"to install the data."
)
vector_view = <float[:length,]>self.c.vector
return numpy.asarray(vector_view)
def __set__(self, vector):
assert len(vector) == self.vocab.vectors_length
cdef float value
for i, value in enumerate(vector):
self.c.vector[i] = value
property repvec:
def __get__(self):
return self.vector
property orth_:
def __get__(self):
return self.vocab.strings[self.c.orth]
property lower:
def __get__(self): return self.c.lower
def __set__(self, int x): self.c.lower = x
property norm:
def __get__(self): return self.c.norm
def __set__(self, int x): self.c.norm = x
property shape:
def __get__(self): return self.c.shape
def __set__(self, int x): self.c.shape = x
property prefix:
def __get__(self): return self.c.prefix
def __set__(self, int x): self.c.prefix = x
property suffix:
def __get__(self): return self.c.suffix
def __set__(self, int x): self.c.suffix = x
property cluster:
def __get__(self): return self.c.cluster
def __set__(self, int x): self.c.cluster = x
property prob:
def __get__(self): return self.c.prob
def __set__(self, float x): self.c.prob = x
property lower_:
def __get__(self): return self.vocab.strings[self.c.lower]
def __set__(self, unicode x): self.c.lower = self.vocab.strings[x]
property norm_:
def __get__(self): return self.vocab.strings[self.c.norm]
def __set__(self, unicode x): self.c.norm = self.vocab.strings[x]
property shape_:
def __get__(self): return self.vocab.strings[self.c.shape]
def __set__(self, unicode x): self.c.shape = self.vocab.strings[x]
property prefix_:
def __get__(self): return self.vocab.strings[self.c.prefix]
def __set__(self, unicode x): self.c.prefix = self.vocab.strings[x]
property suffix_:
def __get__(self): return self.vocab.strings[self.c.suffix]
def __set__(self, unicode x): self.c.suffix = self.vocab.strings[x]
property flags:
def __get__(self): return self.c.flags
def __set__(self, flags_t x): self.c.flags = x
property is_oov:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_OOV)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_OOV, x)
property is_stop:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_STOP)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_STOP, x)
property is_alpha:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_ALPHA)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_ALPHA, x)
property is_ascii:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_ASCII)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_ASCII, x)
property is_digit:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_DIGIT)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_DIGIT, x)
property is_lower:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_LOWER)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_LOWER, x)
property is_title:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_TITLE)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_TITLE, x)
property is_punct:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_PUNCT)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_PUNCT, x)
property is_space:
def __get__(self): return Lexeme.c_check_flag(self.c, IS_SPACE)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, IS_SPACE, x)
property like_url:
def __get__(self): return Lexeme.c_check_flag(self.c, LIKE_URL)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, LIKE_URL, x)
property like_num:
def __get__(self): return Lexeme.c_check_flag(self.c, LIKE_NUM)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, LIKE_NUM, x)
property like_email:
def __get__(self): return Lexeme.c_check_flag(self.c, LIKE_EMAIL)
def __set__(self, bint x): Lexeme.c_set_flag(self.c, LIKE_EMAIL, x)