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import logging
import os
import subprocess
import gzip
class Moses:
def __init__(self, config):
self.config = config
def run_train(self):
args = [self.config.moses_train,
'--root-dir', self.config.experiment_dir,
'--corpus', '%s/%s' % (self.config.experiment_dir,
self.config.train_name),
'--f', self.config.src,
'--e', self.config.tgt,
'--lm', '0:3:%s/%s.arpa' % (self.config.experiment_dir, self.config.tgt),
#'-score-options', "'--OnlyDirect --NoPhraseCount'"
'--alignment', self.config.symm]
if self.config.model == 'hier':
args += ['-hierarchical', '-glue-grammar']
logging.info(' '.join(args))
log = open('%s/train.log' % self.config.experiment_dir, 'w')
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=log)
p.wait()
log.close()
def run_retrain(self):
old_train_nl = '%s/%s.nl' % (self.config.experiment_dir,
self.config.train_name)
old_train_mrl = '%s/%s.mrl' % (self.config.experiment_dir,
self.config.train_name)
moved_train_nl = '%s.notune' % old_train_nl
moved_train_mrl = '%s.notune' % old_train_mrl
tune_nl = '%s/tune.nl' % self.config.experiment_dir
tune_mrl = '%s/tune.mrl' % self.config.experiment_dir
os.rename(old_train_nl, moved_train_nl)
os.rename(old_train_mrl, moved_train_mrl)
with open(old_train_nl, 'w') as rt_train_nl:
subprocess.call(['cat', moved_train_nl, tune_nl], stdout=rt_train_nl)
with open(old_train_mrl, 'w') as rt_train_mrl:
subprocess.call(['cat', moved_train_mrl, tune_mrl], stdout=rt_train_mrl)
os.remove('%s/model/extract.inv.gz' % self.config.experiment_dir)
os.remove('%s/model/extract.gz' % self.config.experiment_dir)
if self.config.model == 'hier':
os.remove('%s/model/rule-table.gz' % self.config.experiment_dir)
else:
os.remove('%s/model/phrase-table.gz' % self.config.experiment_dir)
self.run_train()
def parens_ok(self, line):
mrl_part = line.split(' ||| ')[1]
tokens = [t[-1] for t in mrl_part.split() if t[-2] == '@']
tokens.reverse()
stack = []
while tokens:
t = tokens.pop()
assert t != '*'
if t == 's':
t = 0
t = int(t)
if t > 0:
stack.append(t)
else:
while stack:
top = stack.pop()
if top > 1:
stack.append(top - 1)
break
if tokens and not stack:
return False
return True
def filter_phrase_table(self):
table_name = 'phrase' if self.config.model == 'phrase' else 'rule'
oldname = '%s/model/%s-table.gz' % (self.config.experiment_dir, table_name)
newname = '%s/model/%s-table.old.gz' % (self.config.experiment_dir, table_name)
os.rename(oldname, newname)
with gzip.open(oldname, 'w') as filtered_table_f:
with gzip.open(newname, 'r') as old_table_f:
for line in old_table_f:
if self.parens_ok(line):
print >>filtered_table_f, line,
def run_tune(self):
wd = os.getcwd()
os.chdir(self.config.experiment_dir)
args = [self.config.moses_tune,
'%s/tune.%s' % (self.config.experiment_dir, self.config.src),
'%s/tune.%s' % (self.config.experiment_dir, self.config.tgt)]
if self.config.model == 'hier':
args += [self.config.moses_decode_hier]
else:
args += [self.config.moses_decode_phrase]
args += ['%s/model/moses.ini' % self.config.experiment_dir,
'--mertdir', '%s/dist/bin' % self.config.moses]
if self.config.model == 'hier':
args += ['--filtercmd',
'%s/scripts/training/filter-model-given-input.pl --Hierarchical'\
% self.config.moses]
log = open('%s/tune.log' % self.config.experiment_dir, 'w')
p = subprocess.Popen(args, stdout=subprocess.PIPE, stderr=log)
p.wait()
log.close()
os.chdir(wd)
def run_decode(self):
if self.config.model == 'phrase':
args = [self.config.moses_decode_phrase]
elif self.config.model == 'hier':
args = [self.config.moses_decode_hier]
else:
assert False
if self.config.run == 'test':
args += ['-f', '%s/mert-work/moses.ini' % self.config.experiment_dir]
else:
args += ['-f', '%s/model/moses.ini' % self.config.experiment_dir]
#args += ['-f', '%s/model/moses.ini' % self.config.experiment_dir]
args += ['-drop-unknown',
'-n-best-list', '%s/hyp.%s.nbest' % (self.config.experiment_dir, self.config.tgt),
str(self.config.nbest), 'distinct',
'-threads', '3']
#nullfile = open(os.devnull, 'w')
infile = open('%s/test.%s' % (self.config.experiment_dir, self.config.src))
outfile = open('%s/hyp.%s' % (self.config.experiment_dir, self.config.tgt), 'w')
log = open('%s/decode.log' % self.config.experiment_dir, 'w')
p = subprocess.Popen(args, stdin=infile, stdout=outfile, stderr=log)
p.wait()
infile.close()
log.close()
outfile.close()
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