-
Notifications
You must be signed in to change notification settings - Fork 0
/
representation.py
518 lines (488 loc) · 20.5 KB
/
representation.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import division
import nltk
import os, pickle
from nltk.tokenize import RegexpTokenizer
from nltk.corpus import stopwords
from nltk import word_tokenize
from nltk.stem.snowball import SnowballStemmer
from nltk.util import trigrams
import unicodedata
# https://github.com/dracos/double-metaphone/blob/master/metaphone.py
def dm(st):
"""dm(string) -> (string, string or '')
returns the double metaphone codes for given string - always a tuple
there are no checks done on the input string, but it should be a single word or name."""
vowels = ['A', 'E', 'I', 'O', 'U', 'Y']
st = ''.join((c for c in unicodedata.normalize('NFD', st) if unicodedata.category(c) != 'Mn'))
st = st.upper() # st is short for string. I usually prefer descriptive over short, but this var is used a lot!
is_slavo_germanic = (st.find('W') > -1 or st.find('K') > -1 or st.find('CZ') > -1 or st.find('WITZ') > -1)
length = len(st)
first = 2
st = '-' * first + st + '------' # so we can index beyond the begining and end of the input string
last = first + length - 1
pos = first # pos is short for position
pri = sec = '' # primary and secondary metaphone codes
# skip these silent letters when at start of word
if st[first:first + 2] in ["GN", "KN", "PN", "WR", "PS"]:
pos += 1
# Initial 'X' is pronounced 'Z' e.g. 'Xavier'
if st[first] == 'X':
pri = sec = 'S' # 'Z' maps to 'S'
pos += 1
# main loop through chars in st
while pos <= last:
# print str(pos) + '\t' + st[pos]
ch = st[pos] # ch is short for character
# nxt (short for next characters in metaphone code) is set to a tuple of the next characters in
# the primary and secondary codes and how many characters to move forward in the string.
# the secondary code letter is given only when it is different than the primary.
# This is just a trick to make the code easier to write and read.
nxt = (None, 1) # default action is to add nothing and move to next char
if ch in vowels:
nxt = (None, 1)
if pos == first: # all init vowels now map to 'A'
nxt = ('A', 1)
elif ch == 'B':
# "-mb", e.g", "dumb", already skipped over... see 'M' below
if st[pos + 1] == 'B':
nxt = ('P', 2)
else:
nxt = ('P', 1)
elif ch == 'C':
# various germanic
if pos > first + 1 and st[pos - 2] not in vowels and st[pos - 1:pos + 2] == 'ACH' and \
st[pos + 2] not in ['I'] and (
st[pos + 2] not in ['E'] or st[pos - 2:pos + 4] in ['BACHER', 'MACHER']):
nxt = ('K', 2)
# special case 'CAESAR'
elif pos == first and st[first:first + 6] == 'CAESAR':
nxt = ('S', 2)
elif st[pos:pos + 4] == 'CHIA': # italian 'chianti'
nxt = ('K', 2)
elif st[pos:pos + 2] == 'CH':
# find 'michael'
if pos > first and st[pos:pos + 4] == 'CHAE':
nxt = ('K', 'X', 2)
elif pos == first and (st[pos + 1:pos + 6] in ['HARAC', 'HARIS'] or \
st[pos + 1:pos + 4] in ["HOR", "HYM", "HIA", "HEM"]) and st[
first:first + 5] != 'CHORE':
nxt = ('K', 2)
# germanic, greek, or otherwise 'ch' for 'kh' sound
elif st[first:first + 4] in ['VAN ', 'VON '] or st[first:first + 3] == 'SCH' \
or st[pos - 2:pos + 4] in ["ORCHES", "ARCHIT", "ORCHID"] \
or st[pos + 2] in ['T', 'S'] \
or ((st[pos - 1] in ["A", "O", "U", "E"] or pos == first) \
and st[pos + 2] in ["L", "R", "N", "M", "B", "H", "F", "V", "W"]):
nxt = ('K', 2)
else:
if pos > first:
if st[first:first + 2] == 'MC':
nxt = ('K', 2)
else:
nxt = ('X', 'K', 2)
else:
nxt = ('X', 2)
# e.g, 'czerny'
elif st[pos:pos + 2] == 'CZ' and st[pos - 2:pos + 2] != 'WICZ':
nxt = ('S', 'X', 2)
# e.g., 'focaccia'
elif st[pos + 1:pos + 4] == 'CIA':
nxt = ('X', 3)
# double 'C', but not if e.g. 'McClellan'
elif st[pos:pos + 2] == 'CC' and not (pos == (first + 1) and st[first] == 'M'):
# 'bellocchio' but not 'bacchus'
if st[pos + 2] in ["I", "E", "H"] and st[pos + 2:pos + 4] != 'HU':
# 'accident', 'accede' 'succeed'
if (pos == (first + 1) and st[first] == 'A') or \
st[pos - 1:pos + 4] in ['UCCEE', 'UCCES']:
nxt = ('KS', 3)
# 'bacci', 'bertucci', other italian
else:
nxt = ('X', 3)
else:
nxt = ('K', 2)
elif st[pos:pos + 2] in ["CK", "CG", "CQ"]:
nxt = ('K', 2)
elif st[pos:pos + 2] in ["CI", "CE", "CY"]:
# italian vs. english
if st[pos:pos + 3] in ["CIO", "CIE", "CIA"]:
nxt = ('S', 'X', 2)
else:
nxt = ('S', 2)
else:
# name sent in 'mac caffrey', 'mac gregor
if st[pos + 1:pos + 3] in [" C", " Q", " G"]:
nxt = ('K', 3)
else:
if st[pos + 1] in ["C", "K", "Q"] and st[pos + 1:pos + 3] not in ["CE", "CI"]:
nxt = ('K', 2)
else: # default for 'C'
nxt = ('K', 1)
elif ch == u'\xc7': # will never get here with st.encode('ascii', 'replace') above
# \xc7 is UTF-8 encoding of Ç
nxt = ('S', 1)
elif ch == 'D':
if st[pos:pos + 2] == 'DG':
if st[pos + 2] in ['I', 'E', 'Y']: # e.g. 'edge'
nxt = ('J', 3)
else:
nxt = ('TK', 2)
elif st[pos:pos + 2] in ['DT', 'DD']:
nxt = ('T', 2)
else:
nxt = ('T', 1)
elif ch == 'F':
if st[pos + 1] == 'F':
nxt = ('F', 2)
else:
nxt = ('F', 1)
elif ch == 'G':
if st[pos + 1] == 'H':
if pos > first and st[pos - 1] not in vowels:
nxt = ('K', 2)
elif pos < (first + 3):
if pos == first: # 'ghislane', ghiradelli
if st[pos + 2] == 'I':
nxt = ('J', 2)
else:
nxt = ('K', 2)
# Parker's rule (with some further refinements) - e.g., 'hugh'
elif (pos > (first + 1) and st[pos - 2] in ['B', 'H', 'D']) \
or (pos > (first + 2) and st[pos - 3] in ['B', 'H', 'D']) \
or (pos > (first + 3) and st[pos - 3] in ['B', 'H']):
nxt = (None, 2)
else:
# e.g., 'laugh', 'McLaughlin', 'cough', 'gough', 'rough', 'tough'
if pos > (first + 2) and st[pos - 1] == 'U' \
and st[pos - 3] in ["C", "G", "L", "R", "T"]:
nxt = ('F', 2)
else:
if pos > first and st[pos - 1] != 'I':
nxt = ('K', 2)
elif st[pos + 1] == 'N':
if pos == (first + 1) and st[first] in vowels and not is_slavo_germanic:
nxt = ('KN', 'N', 2)
else:
# not e.g. 'cagney'
if st[pos + 2:pos + 4] != 'EY' and st[pos + 1] != 'Y' and not is_slavo_germanic:
nxt = ('N', 'KN', 2)
else:
nxt = ('KN', 2)
# 'tagliaro'
elif st[pos + 1:pos + 3] == 'LI' and not is_slavo_germanic:
nxt = ('KL', 'L', 2)
# -ges-,-gep-,-gel-, -gie- at beginning
elif pos == first and (st[pos + 1] == 'Y' \
or st[pos + 1:pos + 3] in ["ES", "EP", "EB", "EL", "EY", "IB", "IL", "IN",
"IE", "EI", "ER"]):
nxt = ('K', 'J', 2)
# -ger-, -gy-
elif (st[pos + 1:pos + 3] == 'ER' or st[pos + 1] == 'Y') \
and st[first:first + 6] not in ["DANGER", "RANGER", "MANGER"] \
and st[pos - 1] not in ['E', 'I'] and st[pos - 1:pos + 2] not in ['RGY', 'OGY']:
nxt = ('K', 'J', 2)
# italian e.g, 'biaggi'
elif st[pos + 1] in ['E', 'I', 'Y'] or st[pos - 1:pos + 3] in ["AGGI", "OGGI"]:
# obvious germanic
if st[first:first + 4] in ['VON ', 'VAN '] or st[first:first + 3] == 'SCH' \
or st[pos + 1:pos + 3] == 'ET':
nxt = ('K', 2)
else:
# always soft if french ending
if st[pos + 1:pos + 5] == 'IER ':
nxt = ('J', 2)
else:
nxt = ('J', 'K', 2)
elif st[pos + 1] == 'G':
nxt = ('K', 2)
else:
nxt = ('K', 1)
elif ch == 'H':
# only keep if first & before vowel or btw. 2 vowels
if (pos == first or st[pos - 1] in vowels) and st[pos + 1] in vowels:
nxt = ('H', 2)
else: # (also takes care of 'HH')
nxt = (None, 1)
elif ch == 'J':
# obvious spanish, 'jose', 'san jacinto'
if st[pos:pos + 4] == 'JOSE' or st[first:first + 4] == 'SAN ':
if (pos == first and st[pos + 4] == ' ') or st[first:first + 4] == 'SAN ':
nxt = ('H',)
else:
nxt = ('J', 'H')
elif pos == first and st[pos:pos + 4] != 'JOSE':
nxt = ('J', 'A') # Yankelovich/Jankelowicz
else:
# spanish pron. of e.g. 'bajador'
if st[pos - 1] in vowels and not is_slavo_germanic \
and st[pos + 1] in ['A', 'O']:
nxt = ('J', 'H')
else:
if pos == last:
nxt = ('J', ' ')
else:
if st[pos + 1] not in ["L", "T", "K", "S", "N", "M", "B", "Z"] \
and st[pos - 1] not in ["S", "K", "L"]:
nxt = ('J',)
else:
nxt = (None,)
if st[pos + 1] == 'J':
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
elif ch == 'K':
if st[pos + 1] == 'K':
nxt = ('K', 2)
else:
nxt = ('K', 1)
elif ch == 'L':
if st[pos + 1] == 'L':
# spanish e.g. 'cabrillo', 'gallegos'
if (pos == (last - 2) and st[pos - 1:pos + 3] in ["ILLO", "ILLA", "ALLE"]) \
or ((st[last - 1:last + 1] in ["AS", "OS"] or st[last] in ["A", "O"]) \
and st[pos - 1:pos + 3] == 'ALLE'):
nxt = ('L', ' ', 2)
else:
nxt = ('L', 2)
else:
nxt = ('L', 1)
elif ch == 'M':
if (st[pos + 1:pos + 4] == 'UMB' \
and (pos + 1 == last or st[pos + 2:pos + 4] == 'ER')) \
or st[pos + 1] == 'M':
nxt = ('M', 2)
else:
nxt = ('M', 1)
elif ch == 'N':
if st[pos + 1] == 'N':
nxt = ('N', 2)
else:
nxt = ('N', 1)
elif ch == u'\xd1': # UTF-8 encoding of ト
nxt = ('N', 1)
elif ch == 'P':
if st[pos + 1] == 'H':
nxt = ('F', 2)
elif st[pos + 1] in ['P', 'B']: # also account for "campbell", "raspberry"
nxt = ('P', 2)
else:
nxt = ('P', 1)
elif ch == 'Q':
if st[pos + 1] == 'Q':
nxt = ('K', 2)
else:
nxt = ('K', 1)
elif ch == 'R':
# french e.g. 'rogier', but exclude 'hochmeier'
if pos == last and not is_slavo_germanic \
and st[pos - 2:pos] == 'IE' and st[pos - 4:pos - 2] not in ['ME', 'MA']:
nxt = ('', 'R')
else:
nxt = ('R',)
if st[pos + 1] == 'R':
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
elif ch == 'S':
# special cases 'island', 'isle', 'carlisle', 'carlysle'
if st[pos - 1:pos + 2] in ['ISL', 'YSL']:
nxt = (None, 1)
# special case 'sugar-'
elif pos == first and st[first:first + 5] == 'SUGAR':
nxt = ('X', 'S', 1)
elif st[pos:pos + 2] == 'SH':
# germanic
if st[pos + 1:pos + 5] in ["HEIM", "HOEK", "HOLM", "HOLZ"]:
nxt = ('S', 2)
else:
nxt = ('X', 2)
# italian & armenian
elif st[pos:pos + 3] in ["SIO", "SIA"] or st[pos:pos + 4] == 'SIAN':
if not is_slavo_germanic:
nxt = ('S', 'X', 3)
else:
nxt = ('S', 3)
# german & anglicisations, e.g. 'smith' match 'schmidt', 'snider' match 'schneider'
# also, -sz- in slavic language altho in hungarian it is pronounced 's'
elif (pos == first and st[pos + 1] in ["M", "N", "L", "W"]) or st[pos + 1] == 'Z':
nxt = ('S', 'X')
if st[pos + 1] == 'Z':
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
elif st[pos:pos + 2] == 'SC':
# Schlesinger's rule
if st[pos + 2] == 'H':
# dutch origin, e.g. 'school', 'schooner'
if st[pos + 3:pos + 5] in ["OO", "ER", "EN", "UY", "ED", "EM"]:
# 'schermerhorn', 'schenker'
if st[pos + 3:pos + 5] in ['ER', 'EN']:
nxt = ('X', 'SK', 3)
else:
nxt = ('SK', 3)
else:
if pos == first and st[first + 3] not in vowels and st[first + 3] != 'W':
nxt = ('X', 'S', 3)
else:
nxt = ('X', 3)
elif st[pos + 2] in ['I', 'E', 'Y']:
nxt = ('S', 3)
else:
nxt = ('SK', 3)
# french e.g. 'resnais', 'artois'
elif pos == last and st[pos - 2:pos] in ['AI', 'OI']:
nxt = ('', 'S', 1)
else:
nxt = ('S',)
if st[pos + 1] in ['S', 'Z']:
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
elif ch == 'T':
if st[pos:pos + 4] == 'TION':
nxt = ('X', 3)
elif st[pos:pos + 3] in ['TIA', 'TCH']:
nxt = ('X', 3)
elif st[pos:pos + 2] == 'TH' or st[pos:pos + 3] == 'TTH':
# special case 'thomas', 'thames' or germanic
if st[pos + 2:pos + 4] in ['OM', 'AM'] or st[first:first + 4] in ['VON ', 'VAN '] \
or st[first:first + 3] == 'SCH':
nxt = ('T', 2)
else:
nxt = ('0', 'T', 2)
elif st[pos + 1] in ['T', 'D']:
nxt = ('T', 2)
else:
nxt = ('T', 1)
elif ch == 'V':
if st[pos + 1] == 'V':
nxt = ('F', 2)
else:
nxt = ('F', 1)
elif ch == 'W':
# can also be in middle of word
if st[pos:pos + 2] == 'WR':
nxt = ('R', 2)
elif pos == first and (st[pos + 1] in vowels or st[pos:pos + 2] == 'WH'):
# Wasserman should match Vasserman
if st[pos + 1] in vowels:
nxt = ('A', 'F', 1)
else:
nxt = ('A', 1)
# Arnow should match Arnoff
elif (pos == last and st[pos - 1] in vowels) \
or st[pos - 1:pos + 4] in ["EWSKI", "EWSKY", "OWSKI", "OWSKY"] \
or st[first:first + 3] == 'SCH':
nxt = ('', 'F', 1)
# polish e.g. 'filipowicz'
elif st[pos:pos + 4] in ["WICZ", "WITZ"]:
nxt = ('TS', 'FX', 4)
else: # default is to skip it
nxt = (None, 1)
elif ch == 'X':
# french e.g. breaux
nxt = (None,)
if not (pos == last and (st[pos - 3:pos] in ["IAU", "EAU"] \
or st[pos - 2:pos] in ['AU', 'OU'])):
nxt = ('KS',)
if st[pos + 1] in ['C', 'X']:
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
elif ch == 'Z':
# chinese pinyin e.g. 'zhao'
if st[pos + 1] == 'H':
nxt = ('J',)
elif st[pos + 1:pos + 3] in ["ZO", "ZI", "ZA"] \
or (is_slavo_germanic and pos > first and st[pos - 1] != 'T'):
nxt = ('S', 'TS')
else:
nxt = ('S',)
if st[pos + 1] == 'Z' or st[pos + 1] == 'H':
nxt = nxt + (2,)
else:
nxt = nxt + (1,)
# ----------------------------------
# --- end checking letters------
# ----------------------------------
# print str(nxt)
if len(nxt) == 2:
if nxt[0]:
pri += nxt[0]
sec += nxt[0]
pos += nxt[1]
elif len(nxt) == 3:
if nxt[0]:
pri += nxt[0]
if nxt[1]:
sec += nxt[1]
pos += nxt[2]
if pri == sec:
return (pri, '')
else:
return (pri, sec)
def go_double_metaphone(lista):
lista_demed = [dm(unicode(l)) for l in lista]
lista_out = [x[0] for x in lista_demed]
return lista_out
def stem_lowered(lista, stem=True):
if stem:
stemmer = SnowballStemmer("portuguese")
tokens = [stemmer.stem(t) for t in lista]
return tokens
def lower_case(lista):
return [x.lower() for x in lista]
adict = {}
def cria_dict(clusterfilename):
global adict
if os.path.isfile("cacheric/" + clusterfilename):
print "Cached cluster: cacheric/" + clusterfilename
with open("cacheric/" + clusterfilename, 'rb') as f1:
adict = pickle.load(f1)
return
print "building brown clusters..."
f = open(clusterfilename, "r") # cluster/brown-clusters-pt.txt
for line in iter(f):
linha = line.split("\t", 2)
del linha[-1]
adict[linha[1]] = linha[0]
f.close()
if not os.path.isfile("cacheric/" + clusterfilename):
print "caching clusters into: cacheric/" + clusterfilename
if not os.path.exists("cacheric"):
os.makedirs("cacheric")
with open("cacheric/" + clusterfilename, 'wb') as f1:
pickle.dump(adict, f1)
def clustering(token):
global adict
if adict.has_key(token):
res = adict[token]
else:
res = "0"
return res
def cluster(lista):
return [clustering(x) for x in lista]
def pre_trigram(texto):
lista = []
for x in texto:
if len(x) < 4:
lista.append((x))
else:
lista.append(tuple(trigrams(x)))
return lista
def pos_trigram(lista):
out = []
for a in lista:
if isinstance(a, unicode):
out.append(a)
else:
for l in a:
out.append(l[0] + l[1] + l[2])
return out
def character_trigram(lista):
lista = lower_case(lista)
lista_pre = pre_trigram(lista)
out = pos_trigram(lista_pre)
return out