buildfsa.py
8.87 KB
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
# -*- coding:utf-8 -*-
'''
Created on 21 paź 2013
@author: mlenart
'''
import sys
import logging
import codecs
import encode
import convertinput
import common
from fsa import FSA
from serializer import VLengthSerializer1, VLengthSerializer2, SimpleSerializer
from optparse import OptionParser
class OutputFormat():
BINARY = 'BINARY'
CPP = 'CPP'
# class InputFormat():
# ENCODED = 'ENCODED'
# POLIMORF = 'POLIMORF'
# PLAIN = 'PLAIN'
class FSAType():
MORPH = 'MORPH'
SPELL = 'SPELL'
class SerializationMethod():
SIMPLE = 'SIMPLE'
V1 = 'V1'
V2 = 'V2'
def _parseOptions():
"""
Parses commandline args
"""
parser = OptionParser()
parser.add_option('-i', '--input-file',
dest='inputFile',
metavar='FILE',
help='path to input file')
parser.add_option('--tagset-file',
dest='tagsetFile',
metavar='FILE',
help='path to the file with tagset')
parser.add_option('-o', '--output-file',
dest='outputFile',
metavar='FILE',
help='path to output file')
# parser.add_option('-t', '--fsa-type',
# dest='fsaType',
# help='result FSA type - MORPH (for morphological analysis) or SPELL (for simple spell checker)')
# parser.add_option('--input-format',
# dest='inputFormat',
# help='input format - ENCODED, POLIMORF or PLAIN')
parser.add_option('--output-format',
dest='outputFormat',
help='output format - BINARY or CPP')
parser.add_option('--use-arrays',
dest='useArrays',
action='store_true',
default=False,
help='store states reachable by 2 transitions in arrays (should speed up recognition, available only when --serialization-method=V1)')
parser.add_option('--serialization-method',
dest='serializationMethod',
help="FSA serialization method: \
SIMPLE - fixed-length transitions, fastest and weakest compression \
V1 - variable-length transitions, compressed labels - strongest compression \
V2 - format similar to the default in Jan Daciuk's fsa package - variable-length transitions, non-compressed labels - good compression, good speed")
parser.add_option('--visualize',
dest='visualize',
action='store_true',
default=False,
help='visualize result')
parser.add_option('--train-file',
dest='trainFile',
help='A text file used for training. Should contain words from some large corpus - one word in each line')
parser.add_option('--debug',
dest='debug',
action='store_true',
default=False,
help='output some debugging info')
parser.add_option('--profile',
dest='profile',
action='store_true',
default=False,
help='show profiling graph (required pycallgraph and graphviz')
opts, args = parser.parse_args()
if None in [opts.inputFile, opts.outputFile, opts.outputFormat, opts.tagsetFile, opts.serializationMethod]:
parser.print_help()
exit(1)
if not opts.outputFormat.upper() in [OutputFormat.BINARY, OutputFormat.CPP]:
logging.error('--output-format must be one of ('+str([OutputFormat.BINARY, OutputFormat.CPP])+')')
parser.print_help()
exit(1)
# if not opts.inputFormat.upper() in [InputFormat.ENCODED, InputFormat.POLIMORF, InputFormat.PLAIN]:
# logging.error('input format must be one of ('+str([InputFormat.ENCODED, InputFormat.POLIMORF, InputFormat.PLAIN])+')')
# parser.print_help()
# exit(1)
# if not opts.fsaType.upper() in [FSAType.MORPH, FSAType.SPELL]:
# logging.error('--fsa-type must be one of ('+str([FSAType.MORPH, FSAType.SPELL])+')')
# parser.print_help()
# exit(1)
# if opts.fsaType == FSAType.MORPH and opts.tagsetFile is None:
# logging.error('must provide tagset file')
# parser.print_help()
# exit(1)
if not opts.serializationMethod.upper() in [SerializationMethod.SIMPLE, SerializationMethod.V1, SerializationMethod.V2]:
logging.error('--serialization-method must be one of ('+str([SerializationMethod.SIMPLE, SerializationMethod.V1, SerializationMethod.V2])+')')
parser.print_help()
exit(1)
# if opts.inputFormat.upper() == FSAType.MORPH \
# and not opts.inputFormat.upper() in [InputFormat.ENCODED, InputFormat.POLIMORF]:
# logging.error('input format for morph analysis FSA must be one of ('+str([InputFormat.ENCODED, InputFormat.POLIMORF])+')')
# parser.print_help()
# exit(1)
# if opts.inputFormat.upper() == FSAType.SPELL \
# and not opts.inputFormat.upper() in [InputFormat.PLAIN]:
# logging.error('input format for simple spelling FSA must be '+InputFormat.PLAIN)
# parser.print_help()
# exit(1)
return opts
def _readPolimorfInput(inputFile, tagset, encoder):
with open(inputFile, 'r') as f:
for entry in convertinput.PolimorfConverter(tagset, encoder, 'utf8').convert(f):
yield entry
def _readPlainInput(inputFile, encoder):
with codecs.open(inputFile, 'r', 'utf8') as f:
for line in sorted(f, key=encoder.word2SortKey):
word = line.strip()
yield word, ''
def _readTrainData(trainFile):
with codecs.open(trainFile, 'r', 'utf8') as f:
for line in f:
yield line.strip()
def _printStats(fsa):
acceptingNum = 0
sinkNum = 0
arrayNum = 0
for s in fsa.dfs():
if s.isAccepting():
acceptingNum += 1
if s.transitionsNum == 0:
sinkNum += 1
if s.serializeAsArray:
arrayNum += 1
logging.info('states num: '+str(fsa.getStatesNum()))
logging.info('transitions num: '+str(fsa.getTransitionsNum()))
logging.info('accepting states num: '+str(acceptingNum))
logging.info('sink states num: '+str(sinkNum))
logging.info('array states num: '+str(arrayNum))
def buildFromPoliMorf(inputFile, tagsetFile):
encoder = encode.MorphEncoder()
tagset = common.Tagset(tagsetFile)
fsa = FSA(encoder, tagset)
inputData = _readPolimorfInput(inputFile, tagset, encoder)
fsa.feed(inputData)
_printStats(fsa)
return fsa
def buildFromPlain(inputFile, tagsetFile):
pass
def main(opts):
if opts.debug:
logging.basicConfig(level=logging.DEBUG)
else:
logging.basicConfig(level=logging.INFO)
fsa = buildFromPoliMorf(opts.inputFile, opts.tagsetFile)
# {
# FSAType.SPELL: buildFromPlain(opts.inputFile),
# FSAType.MORPH: buildFromPoliMorf(opts.inputFile, opts.tagsetFile)
# }[opts.fsaType]
if opts.trainFile:
logging.info('training with '+opts.trainFile+' ...')
fsa.train(_readTrainData(opts.trainFile))
logging.info('done training')
# encoder = {
# FSAType.SPELL: encode.SimpleEncoder(),
# FSAType.MORPH: encode.MorphEncoder()
# }[opts.fsaType]
#
# fsa = FSA(encoder)
#
# inputData = {
# FSAType.MORPH: _readPolimorfInput(opts.inputFile, opts.tagsetFile, encoder),
# FSAType.SPELL: _readPlainInput(opts.inputFile, encoder)
# }[opts.fsaType]
# logging.info('feeding FSA with data ...')
# fsa.feed(inputData)
# if opts.trainFile:
# logging.info('training with '+opts.trainFile+' ...')
# fsa.train(readTrainData(opts.trainFile))
# logging.info('done training')
serializer = {
SerializationMethod.SIMPLE: SimpleSerializer,
SerializationMethod.V1: VLengthSerializer1,
SerializationMethod.V2: VLengthSerializer2,
}[opts.serializationMethod](fsa)
{
OutputFormat.CPP: serializer.serialize2CppFile,
OutputFormat.BINARY: serializer.serialize2BinaryFile
}[opts.outputFormat](opts.outputFile)
logging.info('size: '+str(fsa.initialState.reverseOffset))
if opts.visualize:
from visualizer import Visualizer
Visualizer().visualize(fsa)
if __name__ == '__main__':
opts = _parseOptions()
if opts.profile:
from pycallgraph import PyCallGraph
from pycallgraph.output import GraphvizOutput
with PyCallGraph(output=GraphvizOutput()):
main(opts)
else:
main(opts)