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Fix calculation of vector norm, re Issue #522. Need to consolidate the calculations into a helper function.

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This commit is contained in:
Matthew Honnibal 2016-10-23 14:49:31 +02:00
parent a0a4ada42a
commit 2c3a67b693
2 changed files with 10 additions and 8 deletions
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9
spacy/tokens/doc.pyx
View File

@ -1,12 +1,12 @@
cimport cython
from libc.string cimport memcpy, memset
from libc.stdint cimport uint32_t
from libc.math cimport sqrt
import numpy
import numpy.linalg
import struct
cimport numpy as np
import math
import six
import warnings
@ -251,11 +251,12 @@ cdef class Doc:
if 'vector_norm' in self.user_hooks:
return self.user_hooks['vector_norm'](self)
cdef float value
cdef double norm = 0
if self._vector_norm is None:
self._vector_norm = 1e-20
norm = 0.0
for value in self.vector:
self._vector_norm += value * value
self._vector_norm = math.sqrt(self._vector_norm)
norm += value * value
self._vector_norm = sqrt(norm) if norm != 0 else 0
return self._vector_norm
def __set__(self, value):

9
spacy/tokens/span.pyx
View File

@ -3,7 +3,7 @@ from collections import defaultdict
import numpy
import numpy.linalg
cimport numpy as np
import math
from libc.math cimport sqrt
import six
from ..structs cimport TokenC, LexemeC
@ -136,11 +136,12 @@ cdef class Span:
if 'vector_norm' in self.doc.user_span_hooks:
return self.doc.user_span_hooks['vector'](self)
cdef float value
cdef double norm = 0
if self._vector_norm is None:
self._vector_norm = 1e-20
norm = 0
for value in self.vector:
self._vector_norm += value * value
self._vector_norm = math.sqrt(self._vector_norm)
norm += value * value
self._vector_norm = sqrt(norm) if norm != 0 else 0
return self._vector_norm
property text: