def process(self,
source,
target,
input_paths,
output_path,
data_path=None):
args = ['-s', source, '-t', target, '--output', output_path, '--input']
for root in input_paths:
args.append(root)
if data_path is not None:
args.append('--dev')
args.append(
os.path.join(data_path, TrainingPreprocessor.DEV_FOLDER_NAME))
args.append('--test')
args.append(
os.path.join(data_path, TrainingPreprocessor.TEST_FOLDER_NAME))
command = mmt_javamain(self._java_mainclass, args)
shell.execute(command,
stdin=shell.DEVNULL,
stdout=shell.DEVNULL,
stderr=shell.DEVNULL)
return ParallelCorpus.splitlist(source, target, roots=output_path)
def _clean_file(self, source, dest, langs):
if not os.path.isdir(dest.root):
fileutils.makedirs(dest.root, exist_ok=True)
source = os.path.splitext(source.get_file(langs[0]))[0]
output = os.path.splitext(dest.get_file(langs[0]))[0]
command = ['perl', self._cleaner_script, '-ratio', str(self._ratio), source, langs[0], langs[1], output,
str(self._min), str(self._max)]
shell.execute(command, stdout=shell.DEVNULL, stderr=shell.DEVNULL)
def align(self, corpus, langs, model_dir, working_dir='.', log_file=None):
WordAligner.align(self, corpus, langs, working_dir, log_file)
l1 = langs[0]
l2 = langs[1]
corpus_name = 'corpus'
langs_suffix = l1 + '-' + l2
fwd_file = os.path.join(working_dir, corpus_name + '.' + langs_suffix + '.fwd')
bwd_file = os.path.join(working_dir, corpus_name + '.' + langs_suffix + '.bwd')
bal_file = os.path.join(working_dir, corpus_name + '.' + langs_suffix + '.bal')
aligned_file_path = os.path.join(working_dir, corpus_name + '.' + langs_suffix + '.aligned')
corpus_l1 = corpus.get_file(l1)
corpus_l2 = corpus.get_file(l2)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, 'a')
with open(corpus_l1) as source_corpus, \
open(corpus_l2) as target_corpus, \
open(aligned_file_path, 'w') as aligned_file:
for x, y in zip(source_corpus, target_corpus):
aligned_file.write(x.strip() + ' ||| ' + y.strip() + '\n')
cpus = multiprocessing.cpu_count()
env = os.environ.copy()
env['LD_LIBRARY_PATH'] = scripts.LIB_DIR
# Forward alignments
fwd_model = os.path.join(model_dir, 'model.align.fwd')
command = [self._align_bin, '-d', '-v', '-o', '-n', str(cpus), '-B', '-p', fwd_model, '-i',
aligned_file_path]
with open(fwd_file, 'w') as stdout:
shell.execute(command, stdout=stdout, stderr=log, env=env)
# Backward alignments
bwd_model = os.path.join(model_dir, 'model.align.bwd')
command = [self._align_bin, '-d', '-v', '-o', '-n', str(cpus), '-B', '-p', bwd_model, '-r', '-i',
aligned_file_path]
with open(bwd_file, 'w') as stdout:
shell.execute(command, stdout=stdout, stderr=log, env=env)
finally:
if log_file is not None:
log.close()
encoder = _FastAlignBALEncoder(corpus, langs, fwd_file, bwd_file)
encoder.encode(bal_file)
return bal_file
def clean(self, source, target, input_paths, output_path):
args = ['-s', source, '-t', target, '--output', output_path, '--input']
for root in input_paths:
args.append(root)
command = mmt_javamain(self._java_mainclass, args)
shell.execute(command,
stdin=shell.DEVNULL,
stdout=shell.DEVNULL,
stderr=shell.DEVNULL)
return ParallelCorpus.splitlist(source, target, roots=output_path)[0]
def calculate(self, document, reference):
script = os.path.abspath(os.path.join(__file__, os.pardir, 'opt', 'mmt-bleu.perl'))
command = ['perl', script, reference]
with open(document) as input_stream:
stdout, _ = shell.execute(command, stdin=input_stream)
return float(stdout)
def __process_file(self,
source,
dest,
lang,
print_tags=True,
print_placeholders=False,
original_spacing=False):
command = self.__get_command(lang, print_tags, print_placeholders,
original_spacing)
parent_dir = os.path.abspath(os.path.join(dest, os.pardir))
if not os.path.isdir(parent_dir):
fileutils.makedirs(parent_dir, exist_ok=True)
with open(source) as input_stream:
with open(dest, 'w') as output_stream:
shell.execute(command,
stdin=input_stream,
stdout=output_stream,
stderr=shell.DEVNULL)
def train(self, corpora, lang, working_dir=".", log_file=None):
LanguageModel.train(self, corpora, lang, working_dir, log_file)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, "w") if isinstance(log_file, str) else log_file
# Collapse all corpora into a single text file
merged_corpus = os.path.join(working_dir, "merge")
fileutils.merge([corpus.get_file(lang) for corpus in corpora], merged_corpus)
# Create language model in ARPA format
arpa_file = os.path.join(working_dir, "lm.arpa")
arpa_command = [
self._lmplz_bin,
"--discount_fallback",
"-o",
str(self._order),
"-S",
str(self.get_mem_percent()) + "%",
"-T",
working_dir,
]
if self._order > 2 and self.prune:
arpa_command += ["--prune", "0", "0", "1"]
with open(merged_corpus) as stdin:
with open(arpa_file, "w") as stdout:
shell.execute(arpa_command, stdin=stdin, stdout=stdout, stderr=log)
# Binarize ARPA file
binarize_command = [self._bbinary_bin, arpa_file, self._model]
shell.execute(binarize_command, stdout=log, stderr=log)
finally:
if log_file is not None and isinstance(log_file, str):
log.close()
def train(self, corpora, lang, working_dir='.', log_file=None):
LanguageModel.train(self, corpora, lang, working_dir, log_file)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, 'w') if isinstance(log_file,
str) else log_file
# Collapse all corpora into a single text file
merged_corpus = os.path.join(working_dir, 'merge')
fileutils.merge([corpus.get_file(lang) for corpus in corpora],
merged_corpus)
# Create language model in ARPA format
arpa_file = os.path.join(working_dir, 'lm.arpa')
arpa_command = [
self._lmplz_bin, '--discount_fallback', '-o',
str(self._order), '-S',
str(self.get_mem_percent()) + '%', '-T', working_dir
]
if self._order > 2 and self.prune:
arpa_command += ['--prune', '0', '0', '1']
with open(merged_corpus) as stdin:
with open(arpa_file, 'w') as stdout:
shell.execute(arpa_command,
stdin=stdin,
stdout=stdout,
stderr=log)
# Binarize ARPA file
binarize_command = [self._bbinary_bin, arpa_file, self._model]
shell.execute(binarize_command, stdout=log, stderr=log)
finally:
if log_file is not None and isinstance(log_file, str):
log.close()
def create_index(self, corpora, lang, log_file=None):
source_paths = set()
for corpus in corpora:
source_paths.add(corpus.root)
fileutils.makedirs(self._index, exist_ok=True)
args = ['-l', lang, '-i', self._index, '-c']
for source_path in source_paths:
args.append(source_path)
command = mmt_javamain(self._java_mainclass, args)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, 'w')
shell.execute(command, stdout=log, stderr=log)
finally:
if log_file is not None:
log.close()
def train(self, corpora, lang, working_dir=".", log_file=None):
LanguageModel.train(self, corpora, lang, working_dir, log_file)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, "w")
# Collapse all corpora into a single text file
merged_corpus = os.path.join(working_dir, "merge")
fileutils.merge([corpus.get_file(lang) for corpus in corpora], merged_corpus)
input_se = os.path.join(working_dir, "static_input.se")
temp = os.path.join(working_dir, "temp")
arpa_file = os.path.join(working_dir, "static_lm.arpa")
# Add start and end symbols
with open(merged_corpus) as stdin:
with open(input_se, "w") as stdout:
shell.execute([self._addbound_bin], stdin=stdin, stdout=stdout, stderr=log)
# Creating lm in ARPA format
command = [
self._buildlm_bin,
"-i",
input_se,
"-k",
str(cpu_count()),
"-o",
arpa_file,
"-n",
str(self._order),
"-s",
"witten-bell",
"-t",
temp,
"-l",
"/dev/stdout",
"-irstlm",
self._irstlm_dir,
"--PruneSingletons",
]
shell.execute(command, stderr=log)
# Create binary lm
command = [self._compilelm_bin, arpa_file + ".gz", self._model]
shell.execute(command, stderr=log)
finally:
if log_file is not None:
log.close()
def train(self, corpora, lang, working_dir='.', log_file=None):
LanguageModel.train(self, corpora, lang, working_dir, log_file)
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, 'w')
# Collapse all corpora into a single text file
merged_corpus = os.path.join(working_dir, 'merge')
fileutils.merge([corpus.get_file(lang) for corpus in corpora],
merged_corpus)
input_se = os.path.join(working_dir, 'static_input.se')
temp = os.path.join(working_dir, 'temp')
arpa_file = os.path.join(working_dir, 'static_lm.arpa')
# Add start and end symbols
with open(merged_corpus) as stdin:
with open(input_se, 'w') as stdout:
shell.execute([self._addbound_bin],
stdin=stdin,
stdout=stdout,
stderr=log)
# Creating lm in ARPA format
command = [
self._buildlm_bin, '-i', input_se, '-k',
str(cpu_count()), '-o', arpa_file, '-n',
str(self._order), '-s', 'witten-bell', '-t', temp, '-l',
'/dev/stdout', '-irstlm', self._irstlm_dir, '--PruneSingletons'
]
shell.execute(command, stderr=log)
# Create binary lm
command = [self._compilelm_bin, arpa_file + '.gz', self._model]
shell.execute(command, stderr=log)
finally:
if log_file is not None:
log.close()
def align(self, corpus, langs, model_dir, working_dir='.', log_file=None):
WordAligner.align(self, corpus, langs, working_dir, log_file)
l1 = langs[0]
l2 = langs[1]
corpus_name = 'corpus'
vcb1_file = os.path.join(working_dir, corpus_name + '.' + l1 + '.vcb')
vcb2_file = os.path.join(working_dir, corpus_name + '.' + l2 + '.vcb')
snt12_file = os.path.join(working_dir, corpus_name + '.' + l1 + '_' + l2 + '.snt')
snt21_file = os.path.join(working_dir, corpus_name + '.' + l2 + '_' + l1 + '.snt')
cooc12_file = os.path.join(working_dir, corpus_name + '.' + l1 + '_' + l2 + '.cooc')
cooc21_file = os.path.join(working_dir, corpus_name + '.' + l2 + '_' + l1 + '.cooc')
fwdc_file = os.path.join(working_dir, 'fwd.config')
bwdc_file = os.path.join(working_dir, 'bwd.config')
fwddict_file = os.path.join(working_dir, corpus_name + '.fwd.dict')
bwddict_file = os.path.join(working_dir, corpus_name + '.bwd.dict')
fwd_file = os.path.join(working_dir, corpus_name + '.fwd')
bwd_file = os.path.join(working_dir, corpus_name + '.bwd')
bal_file = os.path.join(working_dir, corpus_name + '.bal')
corpus_l1 = corpus.get_file(l1)
corpus_l2 = corpus.get_file(l2)
log = shell.DEVNULL
try:
ncpus = max(2, multiprocessing.cpu_count())
if log_file is not None:
log = open(log_file, 'a')
# Translate the corpora into GIZA format
command = [self._plain2snt_bin, corpus_l1, corpus_l2, '-vcb1', vcb1_file, '-vcb2', vcb2_file, '-snt1',
snt12_file, '-snt2', snt21_file]
shell.execute(command, stdout=log, stderr=log)
# Create the cooccurence
command = [self._snt2cooc_bin, cooc12_file, vcb1_file, vcb2_file, snt12_file]
shell.execute(command, stdout=log, stderr=log)
command = [self._snt2cooc_bin, cooc21_file, vcb2_file, vcb1_file, snt21_file]
shell.execute(command, stdout=log, stderr=log)
# Forward alignments
with open(fwdc_file, 'w') as config:
config.write(self.__mgiza_config_template.format(
coocurrencefile=cooc12_file,
corpusfile=snt12_file,
outputfileprefix=fwddict_file,
sourcevocabularyfile=vcb1_file,
targetvocabularyfile=vcb2_file,
ncpus=ncpus
))
command = [self._mgiza_bin, fwdc_file]
shell.execute(command, stdout=log, stderr=log)
parts = [fwddict_file + '.A3.final.part{part:03d}'.format(part=part) for part in range(0, ncpus)]
command = ['python', self._merge_bin] + parts
with open(fwd_file, 'w') as stdout:
shell.execute(command, stdout=stdout, stderr=log)
# Backward alignments
with open(bwdc_file, 'w') as config:
config.write(self.__mgiza_config_template.format(
coocurrencefile=cooc21_file,
corpusfile=snt21_file,
outputfileprefix=bwddict_file,
sourcevocabularyfile=vcb2_file,
targetvocabularyfile=vcb1_file,
ncpus=ncpus
))
command = [self._mgiza_bin, bwdc_file]
shell.execute(command, stdout=log, stderr=log)
parts = [bwddict_file + '.A3.final.part{part:03d}'.format(part=part) for part in range(0, ncpus)]
command = ['python', self._merge_bin] + parts
with open(bwd_file, 'w') as stdout:
shell.execute(command, stdout=stdout, stderr=log)
# Create BAL file
command = [self._giza2bal_bin, '-i', bwd_file, '-d', fwd_file]
with open(bal_file, 'w') as stdout:
shell.execute(command, stdout=stdout, stderr=log)
finally:
if log_file is not None:
log.close()
return bal_file
def train(self, corpora, aligner, working_dir='.', log_file=None):
if os.path.isdir(self._model) and len(os.listdir(self._model)) > 0:
raise Exception('Model already exists at ' + self._model)
if not os.path.isdir(self._model):
fileutils.makedirs(self._model, exist_ok=True)
if not os.path.isdir(working_dir):
fileutils.makedirs(working_dir, exist_ok=True)
l1 = self._source_lang
l2 = self._target_lang
langs = (l1, l2)
langs_suffix = l1 + '-' + l2
mct_base = self._get_model_basename()
dmp_file = mct_base + '.dmp'
mam_file = mct_base + '.' + langs_suffix + '.mam'
lex_file = mct_base + '.' + langs_suffix + '.lex'
log = shell.DEVNULL
try:
if log_file is not None:
log = open(log_file, 'a')
# Clean corpus for training
clean_output = os.path.join(working_dir, 'clean_corpora')
fileutils.makedirs(clean_output, exist_ok=True)
corpora = self._cleaner.clean(corpora, clean_output, (self._source_lang, self._target_lang))
# Create merged corpus and domains list file (dmp)
merged_corpus = ParallelCorpus(os.path.basename(mct_base), working_dir, langs)
fileutils.merge([corpus.get_file(l1) for corpus in corpora], merged_corpus.get_file(l1))
fileutils.merge([corpus.get_file(l2) for corpus in corpora], merged_corpus.get_file(l2))
with open(dmp_file, 'w') as dmp:
for corpus in corpora:
dmp.write(str(corpus.name) + ' ' + str(corpus.count_lines()) + '\n')
# Create alignments in 'bal' file and symmetrize
bal_file = aligner.align(merged_corpus, langs, self._model, working_dir, log_file)
symal_file = os.path.join(working_dir, 'alignments.' + langs_suffix + '.symal')
symal_command = [self._symal_bin, '-a=g', '-d=yes', '-f=yes', '-b=yes']
with open(bal_file) as stdin:
with open(symal_file, 'w') as stdout:
shell.execute(symal_command, stdin=stdin, stdout=stdout, stderr=log)
# Execute mtt-build
mttbuild_command = self._get_mttbuild_command(mct_base, dmp_file, l1)
with open(merged_corpus.get_file(l1)) as stdin:
shell.execute(mttbuild_command, stdin=stdin, stdout=log, stderr=log)
mttbuild_command = self._get_mttbuild_command(mct_base, dmp_file, l2)
with open(merged_corpus.get_file(l2)) as stdin:
shell.execute(mttbuild_command, stdin=stdin, stdout=log, stderr=log)
# Create 'mam' file
mam_command = [self._symal2mam_bin, mam_file]
with open(symal_file) as stdin:
shell.execute(mam_command, stdin=stdin, stdout=log, stderr=log)
# Create 'lex' file
lex_command = [self._mmlexbuild_bin, mct_base + '.', l1, l2, '-o', lex_file]
shell.execute(lex_command, stdout=log, stderr=log)
finally:
if log_file is not None:
log.close()
def tune(self, corpora=None, tokenize=True, debug=False, context_enabled=True):
if corpora is None:
corpora = ParallelCorpus.list(os.path.join(self.engine.data_path, TrainingPreprocessor.DEV_FOLDER_NAME))
if len(corpora) == 0:
raise IllegalArgumentException('empty corpora')
if not self.is_running():
raise IllegalStateException('No MMT Server running, start the engine first')
target_lang = self.engine.target_lang
source_lang = self.engine.source_lang
cmdlogger = _tuning_logger(4 if tokenize else 3)
cmdlogger.start(self, corpora)
working_dir = self.engine.get_tempdir('tuning')
mert_wd = os.path.join(working_dir, 'mert')
try:
original_corpora = corpora
# Tokenization
tokenized_corpora = original_corpora
if tokenize:
tokenizer_output = os.path.join(working_dir, 'tokenized_corpora')
fileutils.makedirs(tokenizer_output, exist_ok=True)
with cmdlogger.step('Corpus tokenization') as _:
tokenized_corpora = self.engine.preprocessor.process(corpora, tokenizer_output, print_tags=False,
print_placeholders=True,
original_spacing=False)
# Create merged corpus
with cmdlogger.step('Merging corpus') as _:
source_merged_corpus = os.path.join(working_dir, 'corpus.' + source_lang)
with open(source_merged_corpus, 'wb') as out:
original_root = original_corpora[0].root
for corpus in tokenized_corpora:
tokenized = corpus.get_file(source_lang)
original = os.path.join(original_root, corpus.name + '.' + source_lang)
out.write(tokenized + ':' + original + '\n')
target_merged_corpus = os.path.join(working_dir, 'corpus.' + target_lang)
fileutils.merge([corpus.get_file(target_lang) for corpus in tokenized_corpora], target_merged_corpus)
# Run MERT algorithm
with cmdlogger.step('Tuning') as _:
# Start MERT
decoder_flags = ['--port', str(self.api.port)]
if not context_enabled:
decoder_flags.append('--skip-context-analysis')
decoder_flags.append('1')
fileutils.makedirs(mert_wd, exist_ok=True)
with tempfile.NamedTemporaryFile() as runtime_moses_ini:
command = [self._mert_script, source_merged_corpus, target_merged_corpus,
self._mert_i_script, runtime_moses_ini.name, '--threads',
str(multiprocessing.cpu_count()), '--mertdir', os.path.join(Moses.bin_path, 'bin'),
'--mertargs', '\'--binary --sctype BLEU\'', '--working-dir', mert_wd, '--nbest', '100',
'--decoder-flags', '"' + ' '.join(decoder_flags) + '"', '--nonorm', '--closest',
'--no-filter-phrase-table']
with open(self.engine.get_logfile('mert'), 'wb') as log:
shell.execute(' '.join(command), stdout=log, stderr=log)
# Read optimized configuration
with cmdlogger.step('Applying changes') as _:
bleu_score = 0
weights = {}
found_weights = False
with open(os.path.join(mert_wd, 'moses.ini')) as moses_ini:
for line in moses_ini:
line = line.strip()
if len(line) == 0:
continue
elif found_weights:
tokens = line.split()
weights[tokens[0].rstrip('=')] = [float(val) for val in tokens[1:]]
elif line.startswith('# BLEU'):
bleu_score = float(line.split()[2])
elif line == '[weight]':
found_weights = True
_ = self.api.update_features(weights)
cmdlogger.completed(bleu_score)
finally:
if not debug:
self.engine.clear_tempdir()
def tune(self,
corpora=None,
tokenize=True,
debug=False,
context_enabled=True):
if corpora is None:
corpora = ParallelCorpus.list(
os.path.join(self.engine.data_path,
TrainingPreprocessor.DEV_FOLDER_NAME))
if len(corpora) == 0:
raise IllegalArgumentException('empty corpora')
if not self.is_running():
raise IllegalStateException(
'No MMT Server running, start the engine first')
target_lang = self.engine.target_lang
source_lang = self.engine.source_lang
cmdlogger = _tuning_logger(4 if tokenize else 3)
cmdlogger.start(self, corpora)
working_dir = self.engine.get_tempdir('tuning')
mert_wd = os.path.join(working_dir, 'mert')
try:
original_corpora = corpora
# Tokenization
tokenized_corpora = original_corpora
if tokenize:
tokenizer_output = os.path.join(working_dir,
'tokenized_corpora')
fileutils.makedirs(tokenizer_output, exist_ok=True)
with cmdlogger.step('Corpus tokenization') as _:
tokenized_corpora = self.engine.preprocessor.process(
corpora,
tokenizer_output,
print_tags=False,
print_placeholders=True,
original_spacing=False)
# Create merged corpus
with cmdlogger.step('Merging corpus') as _:
source_merged_corpus = os.path.join(working_dir,
'corpus.' + source_lang)
with open(source_merged_corpus, 'wb') as out:
original_root = original_corpora[0].root
for corpus in tokenized_corpora:
tokenized = corpus.get_file(source_lang)
original = os.path.join(
original_root, corpus.name + '.' + source_lang)
out.write(tokenized + ':' + original + '\n')
target_merged_corpus = os.path.join(working_dir,
'corpus.' + target_lang)
fileutils.merge([
corpus.get_file(target_lang)
for corpus in tokenized_corpora
], target_merged_corpus)
# Run MERT algorithm
with cmdlogger.step('Tuning') as _:
# Start MERT
decoder_flags = ['--port', str(self.api.port)]
if not context_enabled:
decoder_flags.append('--skip-context-analysis')
decoder_flags.append('1')
fileutils.makedirs(mert_wd, exist_ok=True)
with tempfile.NamedTemporaryFile() as runtime_moses_ini:
command = [
self._mert_script, source_merged_corpus,
target_merged_corpus, self._mert_i_script,
runtime_moses_ini.name, '--threads',
str(multiprocessing.cpu_count()), '--mertdir',
os.path.join(Moses.bin_path, 'bin'), '--mertargs',
'\'--binary --sctype BLEU\'', '--working-dir', mert_wd,
'--nbest', '100', '--decoder-flags',
'"' + ' '.join(decoder_flags) + '"', '--nonorm',
'--closest', '--no-filter-phrase-table'
]
with open(self.engine.get_logfile('mert'), 'wb') as log:
shell.execute(' '.join(command),
stdout=log,
stderr=log)
# Read optimized configuration
with cmdlogger.step('Applying changes') as _:
bleu_score = 0
weights = {}
found_weights = False
with open(os.path.join(mert_wd, 'moses.ini')) as moses_ini:
for line in moses_ini:
line = line.strip()
if len(line) == 0:
continue
elif found_weights:
tokens = line.split()
weights[tokens[0].rstrip('=')] = [
float(val) for val in tokens[1:]
]
elif line.startswith('# BLEU'):
bleu_score = float(line.split()[2])
elif line == '[weight]':
found_weights = True
_ = self.api.update_features(weights)
cmdlogger.completed(bleu_score)
finally:
if not debug:
self.engine.clear_tempdir()
