def translate_model(queue, rqueue, pid, models, options, k, normalize, verbose,
nbest, return_alignment, suppress_unk):
from nmt import (build_sampler, gen_sample, load_params,
init_params, init_tparams)
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
from theano import shared
trng = RandomStreams(1234)
use_noise = shared(numpy.float32(0.))
fs_init = []
fs_next = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, option, use_noise, trng,
return_alignment=return_alignment)
fs_init.append(f_init)
fs_next.append(f_next)
def _translate(seq):
# sample given an input sequence and obtain scores
input = [numpy.array(s).T.reshape([len(s[0]), len(s), 1]) for s in seq]
sample, score, word_probs, alignment = gen_sample(fs_init, fs_next,
input, trng=trng, k=k, maxlen=200, stochastic=False, argmax=False,
return_alignment=return_alignment, suppress_unk=suppress_unk)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
if nbest:
return sample, score, word_probs, alignment
else:
sidx = numpy.argmin(score)
return sample[sidx], score[sidx], word_probs[sidx], alignment[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
if verbose:
sys.stderr.write('{0} - {1}\n'.format(pid,idx))
seq = _translate(x)
rqueue.put((idx, seq))
return
def encode_model(queue, rqueue, pid, model, options):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
def _encode(seq):
# encode the source sentence
code = f_init(numpy.array(seq).reshape([len(seq), 1]))[1]
return code
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print(pid, '-', idx)
cod = _encode(x)
rqueue.put((idx, cod))
return
def encode_model(queue, rqueue, pid, model, options):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
params = init_params(options)
params = load_params(model, params)
tparams = init_tparams(params)
f_init, f_next = build_sampler(tparams, options, trng)
def _encode(seq):
code = f_init(numpy.array(seq).reshape([len(seq), 1]))[1]
return code
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, '-', idx
cod = _encode(x)
rqueue.put((idx, cod))
return
def encode_model(queue, rqueue, pid, model, options):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
def _encode(seq):
# encode the source sentence
code = f_init(numpy.array(seq).reshape([len(seq), 1]))[1]
return code
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, '-', idx
cod = _encode(x)
rqueue.put((idx, cod))
return
def translate_model(queue, rqueue, pid, models, options, k, normalize, verbose, nbest, return_alignment, suppress_unk):
from nmt import (build_sampler, gen_sample, load_params,
init_params, init_theano_params)
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
from theano import shared
trng = RandomStreams(1234)
use_noise = shared(numpy.float32(0.))
fs_init = []
fs_next = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_theano_params(params)
# word index
f_init, f_next = build_sampler(tparams, option, use_noise, trng, return_alignment=return_alignment)
fs_init.append(f_init)
fs_next.append(f_next)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score, word_probs, alignment = gen_sample(fs_init, fs_next,
numpy.array(seq).T.reshape([len(seq[0]), len(seq), 1]),
trng=trng, k=k, maxlen=200,
stochastic=False, argmax=False, return_alignment=return_alignment, suppress_unk=suppress_unk)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
if nbest:
return sample, score, word_probs, alignment
else:
sidx = numpy.argmin(score)
return sample[sidx], score[sidx], word_probs[sidx], alignment[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
if verbose:
sys.stderr.write('{0} - {1}\n'.format(pid,idx))
seq = _translate(x)
rqueue.put((idx, seq))
return
def translate_model(queue, rqueue, pid, models, options, k, normalize):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = []
for i in xrange(len(models)):
params.append(init_params(options))
# load model parameters and set theano shared variables
tparams = []
for i in xrange(len(params)):
params[i] = load_params(models[i], params[i])
tparams.append(init_tparams(params[i]))
# word index
use_noise = theano.shared(numpy.float32(0.))
f_inits = []
f_nexts = []
for i in xrange(len(tparams)):
f_init, f_next = build_sampler(tparams[i], options, trng, use_noise)
f_inits.append(f_init)
f_nexts.append(f_next)
def _translate(seq):
use_noise.set_value(0.)
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams,
f_inits,
f_nexts,
numpy.array(seq).reshape([len(seq), 1]),
options,
trng=trng,
k=k,
maxlen=500,
stochastic=False,
argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, '-', idx
seq = _translate(x)
rqueue.put((idx, seq))
return
def rescore_model(source_file, nbest_file, saveto, models, options, b, normalize, verbose):
trng = RandomStreams(1234)
fs_log_probs = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, option)
inps = [x, x_mask, y, y_mask]
use_noise.set_value(0.)
f_log_probs = theano.function(inps, cost)
fs_log_probs.append(f_log_probs)
def _score(pairs):
# sample given an input sequence and obtain scores
scores = []
for i, f_log_probs in enumerate(fs_log_probs):
scores.append(pred_probs(f_log_probs, prepare_data, options[i], pairs, normalize=normalize))
return scores
lines = source_file.readlines()
nbest_lines = nbest_file.readlines()
with tempfile.NamedTemporaryFile(prefix='rescore-tmpin') as tmp_in, tempfile.NamedTemporaryFile(prefix='rescore-tmpout') as tmp_out:
for line in nbest_lines:
linesplit = line.split(' ||| ')
idx = int(linesplit[0])
tmp_in.write(lines[idx])
tmp_out.write(linesplit[1] + '\n')
tmp_in.seek(0)
tmp_out.seek(0)
pairs = TextIterator(tmp_in.name, tmp_out.name,
options[0]['dictionaries'][0], options[0]['dictionaries'][1],
n_words_source=options[0]['n_words_src'], n_words_target=options[0]['n_words'],
batch_size=b,
maxlen=float('inf'),
sort_by_length=False) #TODO: sorting by length could be more efficient, but we'd have to synchronize scores with n-best list after
scores = _score(pairs)
for i, line in enumerate(nbest_lines):
score_str = ' '.join(map(str,[s[i] for s in scores]))
saveto.write('{0} {1}\n'.format(line.strip(), score_str))
def translate_model(queue, rqueue, pid, model, options, k, normalize, n_best):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score = gen_sample(
tparams,
f_init,
f_next,
numpy.array(seq).reshape([len(seq), 1]),
options,
trng=trng,
k=k,
maxlen=200,
stochastic=False,
argmax=False,
)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
if n_best > 1:
sidx = numpy.argsort(score)[:n_best]
else:
sidx = numpy.argmin(score)
return numpy.array(sample)[sidx], numpy.array(score)[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, "-", idx
seq, scores = _translate(x)
rqueue.put((idx, seq, scores))
return
def translate_model(queue, rqueue, pid, model, options, k, normalize, n_best):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
from theano import shared
trng = RandomStreams(1234)
use_noise = shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng, use_noise)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams,
f_init,
f_next,
numpy.array(seq).reshape([len(seq), 1]),
options,
trng=trng,
k=k,
maxlen=200,
stochastic=False,
argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
if n_best > 1:
sidx = numpy.argsort(score)[:n_best]
else:
sidx = numpy.argmin(score)
return numpy.array(sample)[sidx], numpy.array(score)[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, '-', idx
seq, scores = _translate(x)
rqueue.put((idx, seq, scores))
return
def translate_model(queue, rqueue, pid, models, options, k, normalize):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = []
for i in xrange(len(models)):
params.append(init_params(options))
# load model parameters and set theano shared variables
tparams = []
for i in xrange(len(params)):
params[i] = load_params(models[i], params[i])
tparams.append(init_tparams(params[i]))
# word index
use_noise = theano.shared(numpy.float32(0.))
f_inits = []
f_nexts = []
for i in xrange(len(tparams)):
f_init, f_next = build_sampler(tparams[i], options, trng, use_noise)
f_inits.append(f_init)
f_nexts.append(f_next)
def _translate(seq):
use_noise.set_value(0.)
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams, f_inits, f_nexts,
numpy.array(seq).reshape([len(seq), 1]),
options, trng=trng, k=k, maxlen=500,
stochastic=False, argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
print pid, '-', idx
seq = _translate(x)
rqueue.put((idx, seq))
return
def __init__(self, trained_model):
# load model model_options
with open('%s.pkl' % trained_model, 'rb') as f:
self.options = pkl.load(f)
logging.info(self.options)
src_dict = os.path.join(self.options['baseDir'], self.options['dictionaries'][0])
if len(self.options['dictionaries']) == 1:
target_dict = None
else:
target_dict = os.path.join(self.options['baseDir'], self.options['dictionaries'][1])
# load source dictionary and invert
with open(src_dict, 'rb') as f:
self.word_dict = pkl.load(f)
self.word_idict = dict()
for kk, vv in self.word_dict.iteritems():
self.word_idict[vv] = kk
self.word_idict[0] = 'EOS'
self.word_idict[1] = 'UNK'
# load target dictionary and invert
if target_dict is None:
self.word_dict_trg = self.word_dict
self.word_idict_trg = self.word_idict
else:
with open(target_dict, 'rb') as f:
self.word_dict_trg = pkl.load(f)
self.word_idict_trg = dict()
for kk, vv in self.word_dict_trg.iteritems():
self.word_idict_trg[vv] = kk
self.word_idict_trg[0] = 'EOS'
self.word_idict_trg[1] = 'UNK'
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
self.trng = RandomStreams(1234)
# allocate model parameters
params = init_params(self.options)
# load model parameters and set theano shared variables
self.params = load_params(trained_model, params)
self.tparams = init_tparams(params)
# word index
use_noise = theano.shared(numpy.float32(0.))
self.f_init, self.f_next = build_sampler(self.tparams, self.options, self.trng, use_noise)
def translate_model(queue, rqueue, pid, model, options, k, normalize):
import theano
from theano import tensor
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.), name='use_noise')
params = init_params(options)
params = load_params(model, params)
tparams = init_tparams(params)
# word index
maxlen = 150
options['maxlen'] = maxlen
f_init, f_next = build_sampler(tparams, options, trng)
def _translate(seq):
sample, score = gen_sample(tparams,
f_init,
f_next,
numpy.array(seq).reshape([len(seq), 1]),
options,
trng=trng,
k=k,
maxlen=maxlen,
stochastic=False)
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req == None:
break
idx, x = req[0], req[1]
print pid, '-', idx
seq = _translate(x)
rqueue.put((idx, seq))
return
def translate_model(queue, rqueue, pid, model, options, k, normalize, annotations_only):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
# f_init outs are [init_state (to decoder), ctx (from encoder)]
# f_next outs are [next_probs, next_sample, next_state] (decoder)
f_init, f_next = build_sampler(tparams, options, trng, annotations_only)
def _translate(seq):
# sample given an input sequence and obtain scores
if annotations_only:
next_state, ctx = f_init(numpy.array(seq).reshape([len(seq), 1]))
return ctx
else:
sample, score = gen_sample(tparams, f_init, f_next,
numpy.array(seq).reshape([len(seq), 1]),
options, trng=trng, k=k, maxlen=200,
stochastic=False, argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req is None:
break
idx, x = req[0], req[1]
seq = _translate(x)
rqueue.put((idx, seq))
return
def get_error(model, test_src, test_target):
profile = False
# reload options
f = open('%s.pkl' % model, 'rb')
model_options = pkl.load(f)
logging.info(model_options)
logging.info('Building model')
params = init_params(model_options)
# reload parameters
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, model_options)
inps = [x, x_mask, y, y_mask]
dict_src = os.path.join(model_options['baseDir'],
model_options['dictionaries'][0])
if len(model_options['dictionaries']) == 1:
dict_target = None
else:
dict_target = os.path.join(model_options['baseDir'],
model_options['dictionaries'][1])
valid = TextIterator(test_src,
test_target,
dict_src,
dict_target,
n_words_source=model_options['n_words_src'],
n_words_target=model_options['n_words'],
batch_size=model_options['valid_batch_size'],
maxlen=model_options['maxlen'])
logging.info('Building f_log_probs...')
f_log_probs = theano.function(inps, cost, profile=profile)
valid_errs = pred_probs(f_log_probs, prepare_data, model_options, valid)
valid_err = valid_errs.mean()
logging.info('Valid Error:%s' % (str(valid_err)))
def get_error(model, test_src, test_target):
profile=False
# reload options
f = open('%s.pkl' % model, 'rb')
model_options = pkl.load(f)
logging.info(model_options)
logging.info('Building model')
params = init_params(model_options)
# reload parameters
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, model_options)
inps = [x, x_mask, y, y_mask]
dict_src = os.path.join(model_options['baseDir'], model_options['dictionaries'][0])
if len(model_options['dictionaries']) == 1:
dict_target = None
else:
dict_target = os.path.join(model_options['baseDir'], model_options['dictionaries'][1])
valid = TextIterator(test_src, test_target,
dict_src,
dict_target,
n_words_source=model_options['n_words_src'],
n_words_target=model_options['n_words'],
batch_size=model_options['valid_batch_size'],
maxlen=model_options['maxlen'])
logging.info('Building f_log_probs...')
f_log_probs = theano.function(inps, cost, profile=profile)
valid_errs = pred_probs(f_log_probs, prepare_data,
model_options, valid)
valid_err = valid_errs.mean()
logging.info('Valid Error:%s'% (str(valid_err)))
def translate_model(queue, rqueue, pid, model, options, k, normalize):
import theano
from theano import tensor
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.), name='use_noise')
params = init_params(options)
params = load_params(model, params)
tparams = init_tparams(params)
# word index
maxlen = 150
options['maxlen'] = maxlen
f_init, f_next = build_sampler(tparams, options, trng)
def _translate(seq):
sample, score = gen_sample(tparams, f_init, f_next, numpy.array(seq).reshape([len(seq),1]), options,
trng=trng, k=k, maxlen=maxlen, stochastic=False)
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req == None:
break
idx, x = req[0], req[1]
print pid, '-', idx
seq = _translate(x)
rqueue.put((idx, seq))
return
def sample(model, dictionary, dictionary_target, \
source_file, ref_file, saveto, \
k=10, normalize=False, \
bleu_script='./data/mteval-v11b.pl', res_to_sgm='./data/plain2sgm'):
# load model model_options
with open(model + '.pkl', 'rb') as f:
options = pkl.load(f)
# load target dictionary and invert
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
val_start_time = time.time()
trng = RandomStreams(1234)
use_noise = shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng, use_noise)
bleu_score = gen_trans(test_src=source_file, test_ref=ref_file, out_file=saveto, \
dict_src=dictionary, idict_trg=word_idict_trg, \
tparams=tparams, f_init=f_init, f_next=f_next, model_options=options, \
trng=trng, k=10, stochastic=False)
print(model + ' / ' + source_file + ' / ' + 'test bleu %.4f' % bleu_score)
print('timestamp {} {}'.format(
'done', time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())))
sys.stdout.flush()
def build_alignment_cg(model, options):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# build model
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, options)
inps = [x, x_mask, y, y_mask]
# compile a function and return it
return theano.function(inps, opt_ret['dec_alphas'])
def translate_model(queue, model, options, k, normalize, d_maxlen=200):
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng, use_noise)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams, f_init, f_next,
numpy.array(seq).reshape([len(seq), 1]),
options, trng=trng, k=k, maxlen=d_maxlen,
stochastic=False, argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
rqueue = []
for req in queue:
idx, x = req[0], req[1]
print 'translate-', idx
seq = _translate(x)
rqueue.append(seq)
return rqueue
def main(model, dictionary, dictionary_target, source_file, saveto, k=5,
normalize=False, n_process=5, chr_level=False,messageOff=False):
if not messageOff:
print 'load model model_options'
if os.path.exists('%s.pkl' % model):
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
else:
pklName = model[:model.index('.iter')]+model[model.index('.npz'):]
with open('%s.pkl' % pklName, 'rb') as f:
options = pkl.load(f)
if not messageOff:
print 'load source dictionary and invert'
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
if not messageOff:
print 'load target dictionary and invert'
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
# utility function
def _index2sens(caps):
capsw = []
for cc in caps:
ww = []
for w in cc:
if w == 0:
continue
elif w < 0:
continue
ww.append(word_idict_trg[w])
capsw.append(' '.join(ww))
return capsw
def _seqs2sen(seqs):
sen = []
for w in seqs:
if w == 0:
continue
elif w < 0:
continue
sen.append(word_idict_trg[w])
return ' '.join(sen)
def _send_jobs(fname):# translate source sentence into indices
sourceIndices = []
source = []
with open(fname, 'r') as f:
for idx, line in enumerate(f):
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: word_dict[w] if w in word_dict else 1, words)
x = map(lambda ii: ii if ii < options['n_words_src'] else 1, x)
x += [0]
sourceIndices.append(x)
source.append(line)
return sourceIndices , source
if not messageOff:
print 'Translating ', source_file, '...'
print 'Prepare data...',
ret = _send_jobs(source_file)
sourceIndices = ret[0]
source = ret[1]
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng, use_noise)
def _translate(seq):
# sample given an input sequence and obtain translated result
sampleData = gen_sample(tparams, f_init, f_next,
numpy.array(seq).reshape([len(seq), 1]),
options, trng=trng, k=k,
maxlen=200,
return_attention=True,
stochastic = False,
argmax = False,
normalize = normalize)
sample=sampleData[0]
score=sampleData[1]
attention_record=sampleData[2]
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
if attention_record is None:
attention=None
else:
attention=attention_record[sidx]
return sample[sidx], attention
trans = []
idx = 0
if not messageOff:
print 'Done, translating...'
for x , sSen in zip(sourceIndices , source):
transData = _translate(x)
y=transData[0]
attention=transData[1]
if not messageOff:
print 'Sen ',idx, ':',sSen # source sentence
y = _seqs2sen(y)
trans.append(y)
if not messageOff:
print 'translation:', y # translation result
print 'attention:'
# if attention is not None:
print_matrix(attention)
idx += 1
with open(saveto, 'w') as f:
print >>f, '\n'.join(trans)
print 'Done'
def main(model, dictionary, dictionary_target, source, target, outfile,
wordbyword):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
"""
# load source dictionary and invert
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
# load target dictionary and invert
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
"""
valid_noshuf = TextIterator(source,
target,
dictionary,
dictionary_target,
n_words_source=options['n_words_src'],
n_words_target=options['n_words'],
batch_size=options['valid_batch_size'],
maxlen=2000,
shuffle=False)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost, cost_ = \
build_model(tparams, options)
inps = [x, x_mask, y, y_mask]
if wordbyword:
f_log_probs = theano.function(inps, cost_, profile=profile)
valid_errs = pred_probs(f_log_probs,
prepare_data,
options,
valid_noshuf,
verbose=True,
as_list=True)
with open(outfile, 'wb') as f:
pkl.dump(valid_errs, f, pkl.HIGHEST_PROTOCOL)
else:
f_log_probs = theano.function(inps, cost, profile=profile)
valid_errs = pred_probs(f_log_probs,
prepare_data,
options,
valid_noshuf,
verbose=True)
numpy.save(outfile, valid_errs)
def main(model_files, dictionary_target, grammar_target, data_path, saveto, wer_file, k=5):
# load source dictionary and invert
worddicts = load_dict(dictionary_target)
worddicts_r = [None] * len(worddicts)
for kk, vv in worddicts.items():
worddicts_r[vv] = kk
grammar=compileGrammar(loadGrammar(grammar_target,worddicts))
trng = RandomStreams(1234)
models=[]
# load model model_options
for model_file in model_files:
print('Loading model: %s' % model_file)
with open('%s.pkl' % model_file, 'rb') as f:
options = pkl.load(f)
print(options)
params = init_params(options)
params = load_params(model_file, params)
tparams = init_tparams(params)
f_init, f_next = build_sampler(tparams, options, trng)
models.append((f_init,f_next,options,0.8))
for lm_file in []:
print('Loading language model: %s' % lm_file)
f_init,f_next,options=load_language_model(lm_file)
models.append((f_init,f_next,options,0.2))
valid,valid_uid_list = dataIterator_valid(data_path,
worddicts, batch_size=1, maxlen=250)
fpp_sample=[open('%s.%d'%(saveto,beam),'w') for beam in range(k)]
valid_count_idx=0
print('Decoding...')
ud_epoch = 0
ud_epoch_start = time.time()
for x,y in valid:
for xx in x:
print('%d : %s' % (valid_count_idx+1, valid_uid_list[valid_count_idx]))
xx_pad = numpy.zeros((xx.shape[0]+1,xx.shape[1]), dtype='float32')
xx_pad[:xx.shape[0],:] = xx
stochastic = False
sample, score = gen_sample(models,
xx_pad[:, None, :],
grammar,
trng=trng, k=k,
maxlen=250,
dictlen=len(worddicts),
stochastic=stochastic,
argmax=False)
score = score / numpy.array([len(s) for s in sample])
sample_rank=numpy.argsort(score)
for beam in range(k):
fpp_sample[beam].write(valid_uid_list[valid_count_idx])
if len(sample)>beam:
ss=sample[sample_rank[beam]]
else:
ss=[0]
for vv in ss:
if vv == 0: # <eol>
break
fpp_sample[beam].write(' '+worddicts_r[vv])
fpp_sample[beam].write('\n')
valid_count_idx=valid_count_idx+1
ud_epoch = (time.time() - ud_epoch_start)
print 'test set decode done, cost time ...', ud_epoch
for beam in range(k):
fpp_sample[beam].flush();
fpp_sample[beam].close();
os.system('python compute-wer.py %s.%d %s %s'%(saveto,beam,os.path.join(data_path,"caption.txt"),wer_file))
fpp=open(wer_file)
stuff=fpp.readlines()
fpp.close()
m=re.search('WER (.*)\n',stuff[0])
valid_per=100. * float(m.group(1))
m=re.search('ExpRate (.*)\n',stuff[1])
valid_sacc=100. * float(m.group(1))
print '%d Valid WER: %.2f%%, ExpRate: %.2f%%' % (beam,valid_per,valid_sacc)
def main(model,
pklmodel,
dictionary,
dictionary_target,
dictionary_chunk,
source_file,
target_file,
saveto,
ck=5,
wk=5,
k=20,
normalize=False,
n_process=5,
chr_level=False,
jointProb=False,
show_boundary=False):
print 'load model model_options'
with open('%s' % pklmodel, 'rb') as f:
options = pkl.load(f)
print 'load source dictionary and invert'
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
print 'load target dictionary and invert'
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
# dict for chunk label
worddict_chunk = [None]
worddict_r_chunk = [None]
with open(dictionary_chunk, 'rb') as f:
worddict_chunk = pkl.load(f)
worddict_r_chunk = dict()
for kk, vv in worddict_chunk.iteritems():
worddict_r_chunk[vv] = kk
def _seqs2wordsByChunk(caps, boundary, chunk, dictionary):
capsw = []
for cc, bb, ch in zip(caps, boundary, chunk):
if cc == 0:
continue
# if w == -10000:
# ww.append('| NOTEND')
# continue
if cc < 0:
# ww.append('|' + str(w))
continue
if bb == 0:
capsw[-1] = capsw[-1] + "_" + (dictionary[cc])
else:
capsw.append(dictionary[cc])
return capsw
# output in the chunk format:
# w1, POS, chunk_boundary-chunk_tag
def _seqs2wordsByChunkFormat(caps, boundary, chunk, dictionary, chunk_dic):
capsw = []
current_tag = ''
for cc, bb, ch in zip(caps, boundary, chunk):
if cc == 0:
continue
# if w == -10000:
# ww.append('| NOTEND')
# continue
if cc < 0:
# ww.append('|' + str(w))
continue
if bb == 0:
capsw.append(dictionary[cc] + ' ' + 'I-' + chunk_dic[ch])
else:
capsw.append(dictionary[cc] + ' ' + 'B-' + chunk_dic[ch])
return capsw
# utility function
def _seqs2words(caps, dictionary):
capsw = []
ww = []
for w in caps:
if w == 0:
continue
ww.append(dictionary[w])
return ww
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
f_align = build_alignment(tparams, options)
# begin to read by iterators
train = TrainingTextIterator(source_file,
target_file,
dictionary,
dictionary_target,
dictionary_chunk,
n_words_source=30000,
n_words_target=30000,
batch_size=1,
max_chunk_len=50,
max_word_len=10000)
boundary_right = 0.0
tag_right = 0.0
boundary_total = 0.0
tag_total = 0.0
for x, y_chunk, y_cw in train:
x, x_mask, y_c, y_cw, chunk_indicator, y_mask = \
prepare_training_data(x,
y_chunk,
y_cw,
maxlen_chunk=100000,
maxlen_cw=100000,
n_words_src=30000,
n_words=30000)
align, chunk_tag, chunk_boundary = f_align(x, x_mask, y_c, y_cw,
y_mask, chunk_indicator)
x = x.reshape((x.shape[0], ))
y_cw = y_cw.reshape((y_cw.shape[0], ))
y_c = y_c.reshape((y_c.shape[0], ))
chunk_indicator = chunk_indicator.reshape((chunk_indicator.shape[0], ))
print '\n'.join(
_seqs2wordsByChunkFormat(numpy.ndarray.tolist(y_cw),
numpy.ndarray.tolist(chunk_boundary),
numpy.ndarray.tolist(chunk_tag),
word_idict_trg, worddict_r_chunk))
for gold_boundary, gold_chunk_tag, predict_boundary, predict_chunk_tag in zip(
numpy.ndarray.tolist(chunk_indicator),
numpy.ndarray.tolist(y_c),
numpy.ndarray.tolist(chunk_boundary),
numpy.ndarray.tolist(chunk_tag)):
boundary_total += 1
tag_total += 1
if gold_boundary == predict_boundary:
boundary_right += 1
if gold_chunk_tag == predict_chunk_tag:
tag_right += 1
# for tag, boundary in zip(numpy.ndarray.tolist(chunk_tag), numpy.ndarray.tolist(chunk_boundary)):
# print
#
# # filter alignment
# filter_align = []
# for b, align in zip(numpy.ndarray.tolist(chunk_indicator), numpy.ndarray.tolist(align[0])):
# if b == 1.0:
# filter_align.append(align)
#
#
# print 'align =',
# # a = numpy.ndarray.tolist(filter_align)
# a = numpy.array(filter_align)
# a = numpy.transpose(a)
# a = numpy.ndarray.tolist(a)
#
# print a
print 'boundary prec: ', boundary_right / boundary_total
print 'tag prec: ', tag_right / tag_total
print 'Done'
def main(model, bn_model, dictionary_target, fea, latex, saveto, output, k=5):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
# load source dictionary and invert
worddicts = load_dict(dictionary_target)
worddicts_r = [None] * len(worddicts)
for kk, vv in worddicts.iteritems():
worddicts_r[vv] = kk
valid, valid_uid_list = dataIterator(fea,
latex,
worddicts,
batch_size=1,
batch_Imagesize=500000,
maxlen=500,
maxImagesize=500000)
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
bn_params = init_bn_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
bn_params = load_params(bn_model, bn_params)
tparams = init_tparams(params)
bn_tparams = init_tparams(bn_params)
f_init, f_next = build_sampler(tparams, bn_tparams, options, trng,
use_noise)
use_noise.set_value(0.)
fpp_sample = open(saveto, 'w')
valid_count_idx = 0
# FIXME: random selection?
print 'Decoding ... '
for x, y in valid:
for xx in x:
print '%d : %s' % (valid_count_idx + 1,
valid_uid_list[valid_count_idx])
xx_pad = numpy.zeros(
(xx.shape[0], xx.shape[1], xx.shape[2]),
dtype='float32') # input_channels * height * width
xx_pad[:, :, :] = xx / 255.
stochastic = False
sample, score = gen_sample(f_init,
f_next,
xx_pad[None, :, :, :],
options,
trng=trng,
k=10,
maxlen=1000,
stochastic=stochastic,
argmax=False)
if stochastic:
ss = sample
else:
score = score / numpy.array([len(s) for s in sample])
ss = sample[score.argmin()]
fpp_sample.write(valid_uid_list[valid_count_idx])
valid_count_idx = valid_count_idx + 1
for vv in ss:
if vv == 0: # <eol>
break
fpp_sample.write(' ' + worddicts_r[vv])
fpp_sample.write('\n')
fpp_sample.close()
print 'test set decode done'
os.system('python compute-wer.py ' + saveto + ' ' + latex + ' ' + output)
fpp = open(output) # %WER 31.63
stuff = fpp.readlines()
fpp.close()
m = re.search('WER (.*)\n', stuff[0])
valid_per = 100. * float(m.group(1))
m = re.search('ExpRate (.*)\n', stuff[1])
valid_sacc = 100. * float(m.group(1))
print 'Valid WER: %.2f%%, ExpRate: %.2f%%' % (valid_per, valid_sacc)
def main(model,
pklmodel,
dictionary,
dictionary_target,
source_file,
saveto,
ck=5,
wk=5,
k=20,
normalize=False,
n_process=5,
chr_level=False,
jointProb=False,
show_boundary=False):
print 'load model model_options'
with open('%s' % pklmodel, 'rb') as f:
options = pkl.load(f)
print 'load source dictionary and invert'
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
print 'load target dictionary and invert'
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
# utility function
def _seqs2words(caps, boundary, chunk):
capsw = []
for cc, bb, ch in zip(caps, boundary, chunk):
ww = []
for w, b, c in zip(cc, bb, ch):
if w == 0:
continue
# if w == -10000:
# ww.append('| NOTEND')
# continue
elif w < 0:
# ww.append('|' + str(w))
continue
if show_boundary:
if b == 1.0:
ww.append('|')
ww.append(word_idict_trg[w])
capsw.append(' '.join(ww))
return capsw
def _seqs2wordsByChunk(caps, boundary, chunk):
capsw = []
for cc, bb, ch in zip(caps, boundary, chunk):
ww = []
for w, b, c in zip(cc, bb, ch):
if w == 0:
continue
# if w == -10000:
# ww.append('| NOTEND')
# continue
elif w < 0:
# ww.append('|' + str(w))
continue
if b == 1.0:
ww.append('| ' + str(c))
ww.append(word_idict_trg[w])
capsw.append(' '.join(ww))
return capsw
def _send_jobs(fname):
retval = []
with open(fname, 'r') as f:
for idx, line in enumerate(f):
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: word_dict[w] if w in word_dict else 1, words)
x = map(lambda ii: ii if ii < options['n_words_src'] else 1, x)
x += [0]
retval.append(x)
return retval
print 'Translating ', source_file, '...'
print 'look up table'
n_samples = _send_jobs(source_file)
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next_chunk, f_next_word = build_sampler(tparams, options, trng,
use_noise)
def _translate(seq):
be_stochastic = False
# sample given an input sequence and obtain scores
sample, boundary, chunk, score = gen_sample(tparams,
f_init,
f_next_chunk,
f_next_word,
numpy.array(seq).reshape(
[len(seq), 1]),
options,
trng=trng,
maxlen=200,
k_chunk=ck,
k_word=wk,
k=k,
stochastic=be_stochastic,
argmax=True,
jointProb=False)
if be_stochastic:
return sample
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
# print 'score', score
# print 'candidates', sample
sidx = numpy.argmin(score)
return sample[sidx], boundary[sidx], chunk[sidx]
ys = []
yb = []
yc = []
idx = 0
for x in n_samples:
y, y_boundary, y_chunk = _translate(x)
ys.append(y)
yb.append(y_boundary)
yc.append(y_chunk)
print idx
idx += 1
# print ys
# print yb
trans = _seqs2words(ys, yb, yc)
trans_chunk = _seqs2wordsByChunk(ys, yb, yc)
with open(saveto, 'w') as f:
print >> f, '\n'.join(trans)
with open(saveto + 'chunk', 'w') as f:
print >> f, '\n'.join(trans_chunk)
print 'Done'
def main(model,
pklmodel,
valid_datasets=['../data/dev/newstest2011.en.tok',
'../data/dev/newstest2011.fr.tok'],
dictionaries=[
'/data/lisatmp3/chokyun/europarl/europarl-v7.fr-en.en.tok.pkl',
'/data/lisatmp3/chokyun/europarl/europarl-v7.fr-en.fr.tok.pkl'],
dictionary_chunk='/data/lisatmp3/chokyun/europarl/europarl-v7.fr-en.en.tok.pkl',
result_file='./cost.result'):
# load the dictionaries of both source and target
# load dictionaries and invert them
worddicts = [None] * len(dictionaries)
worddicts_r = [None] * len(dictionaries)
for ii, dd in enumerate(dictionaries):
with open(dd, 'rb') as f:
worddicts[ii] = pkl.load(f)
worddicts_r[ii] = dict()
for kk, vv in worddicts[ii].iteritems():
worddicts_r[ii][vv] = kk
# dict for chunk label
worddict_chunk = [None]
worddict_r_chunk = [None]
with open(dictionary_chunk, 'rb') as f:
worddict_chunk = pkl.load(f)
worddict_r_chunk = dict()
for kk, vv in worddict_chunk.iteritems():
worddict_r_chunk[vv] = kk
print worddict_chunk
print 'load model model_options'
with open('%s' % pklmodel, 'rb') as f:
options = pkl.load(f)
# build valid set
valid = TrainingTextIterator(valid_datasets[0], valid_datasets[1],
dictionaries[0], dictionaries[1], dictionary_chunk,
n_words_source=options['n_words_src'], n_words_target=options['n_words'],
batch_size=options['batch_size'],
max_chunk_len=options['maxlen_chunk'], max_word_len=options['maxlen_chunk_words'])
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y_chunk, y_mask, y_cw, y_chunk_indicator, \
opt_ret, \
cost, cost_cw= \
build_model(tparams, options)
inps = [x, x_mask, y_chunk, y_mask, y_cw, y_chunk_indicator]
# before any regularizer
print 'Building f_log_probs...',
f_log_probs = theano.function(inps, cost, profile=False)
f_log_probs_cw = theano.function(inps, cost_cw, profile=False)
print 'Done'
valid_errs, valid_errs_cw = pred_probs(f_log_probs, f_log_probs_cw, prepare_training_data,
options, valid)
valid_err = valid_errs.mean()
valid_err_cw = valid_errs_cw.mean()
with open(result_file, 'w') as result_file:
print >> result_file, valid_err, valid_err_cw
def main(model,
dictionary,
dictionary_target,
source_file,
reference_file,
chr_level=False):
print 'load model model_options'
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
print 'load source dictionary and invert'
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
print 'load target dictionary and invert'
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
# utility function
def _seqs2sen(seqs, _dict):
sen = []
for w in seqs:
if w == 0:
continue
elif w < 0:
continue
sen.append(_dict[w])
return ' '.join(sen)
def _send_jobs(fname, _dict,
_n_words): # translate source sentence into source indices
sourceIndices = []
source = []
with open(fname, 'r') as f:
for idx, line in enumerate(f):
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: _dict[w] if w in _dict else 1, words)
x = map(lambda ii: ii if ii < _n_words else 1, x)
x += [0]
sourceIndices.append(x)
source.append(line)
return sourceIndices, source
print 'Force Translating ', source_file, '...'
print 'Prepare data...',
ret = _send_jobs(source_file, word_dict, options['n_words_src'])
sourceIndices = ret[0]
source = ret[1]
ret_ref = _send_jobs(reference_file, word_dict_trg, options['n_words'])
targetIndices = ret_ref[0]
target = ret_ref[1]
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
force_record = build_force_sampler(tparams, options, use_noise)
def _translate(seq, trg_seq):
# sample given an input sequence and obtain translated result
sampleData = force_record(
numpy.array(seq).reshape([len(seq), 1]),
numpy.array(trg_seq).reshape([len(trg_seq), 1]))
alpha_buffer_record = sampleData[0]
attention_record = sampleData[1]
if alpha_buffer_record is None:
buffer_weight = None
else:
buffer_weight = alpha_buffer_record.reshape(
[len(trg_seq), options['buffer_size']])
if attention_record is None:
attention = None
else:
attention = attention_record.reshape([len(trg_seq), len(seq)])
return buffer_weight, attention
idx = 0
print 'Done, translating...'
for x, sSen, y in zip(sourceIndices, source, targetIndices):
transData = _translate(x, y)
buffer_weight = transData[0]
attention = transData[1]
print 'Sen ', idx, ':', sSen # source sentence
tSen = _seqs2sen(y, word_idict_trg)
print 'translation:', tSen # target sentence
idx += 1
print 'buffer_weight:'
print_matrix(buffer_weight)
print 'attention:'
print_matrix(attention)
print 'Done'
def translate_model(queue, rqueue, mask_left, mask_right, write_mask, pid,
model, options, k, normalize):
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng, use_noise)
def _translate(seq, left, right, write):
# sample given an input sequence and obtain scores
print left.shape, right.shape, write.shape, len(seq)
sample, score = gen_sample(tparams,
f_init,
f_next,
numpy.array(seq).reshape([len(seq), 1]),
left[:, :, None],
right[:, :, None],
write,
options,
trng=trng,
k=k,
maxlen=200,
stochastic=False,
argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
while True:
req = queue.get()
if req is None:
break
rem_l = mask_left.get()
rem_r = mask_right.get()
rem_w = write_mask.get()
idx, x = req[0], req[1]
l = rem_l[1]
r = rem_r[1]
w = rem_w[1]
print pid, '-', idx
seq = _translate(x, l, r, w)
rqueue.put((idx, seq))
return
def rescore_model(source_file, nbest_file, saveto, models, options, b, normalize, verbose, alignweights):
trng = RandomStreams(1234)
fs_log_probs = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, option)
inps = [x, x_mask, y, y_mask]
use_noise.set_value(0.)
if alignweights:
sys.stderr.write("\t*** Save weight mode ON, alignment matrix will be saved.\n")
outputs = [cost, opt_ret['dec_alphas']]
f_log_probs = theano.function(inps, outputs)
else:
f_log_probs = theano.function(inps, cost)
fs_log_probs.append(f_log_probs)
def _score(pairs, alignweights=False):
# sample given an input sequence and obtain scores
scores = []
alignments = []
for i, f_log_probs in enumerate(fs_log_probs):
score, alignment = pred_probs(f_log_probs, prepare_data, options[i], pairs, normalize=normalize, alignweights = alignweights)
scores.append(score)
alignments.append(alignment)
return scores, alignments
lines = source_file.readlines()
nbest_lines = nbest_file.readlines()
if alignweights: ### opening the temporary file.
temp_name = saveto.name + ".json"
align_OUT = tempfile.NamedTemporaryFile(prefix=temp_name)
with tempfile.NamedTemporaryFile(prefix='rescore-tmpin') as tmp_in, tempfile.NamedTemporaryFile(prefix='rescore-tmpout') as tmp_out:
for line in nbest_lines:
linesplit = line.split(' ||| ')
idx = int(linesplit[0]) ##index from the source file. Starting from 0.
tmp_in.write(lines[idx])
tmp_out.write(linesplit[1] + '\n')
tmp_in.seek(0)
tmp_out.seek(0)
pairs = TextIterator(tmp_in.name, tmp_out.name,
options[0]['dictionaries'][:-1], options[0]['dictionaries'][1],
n_words_source=options[0]['n_words_src'], n_words_target=options[0]['n_words'],
batch_size=b,
maxlen=float('inf'),
sort_by_length=False) #TODO: sorting by length could be more efficient, but we'd have to synchronize scores with n-best list after
scores, alignments = _score(pairs, alignweights)
for i, line in enumerate(nbest_lines):
score_str = ' '.join(map(str,[s[i] for s in scores]))
saveto.write('{0} {1}\n'.format(line.strip(), score_str))
### optional save weights mode.
if alignweights:
for line in alignments:
align_OUT.write(line + "\n")
if alignweights:
combine_source_target_text(source_file, nbest_file, saveto.name, align_OUT)
align_OUT.close()
def main(model,
dictionary,
dictionary_target,
source_file,
saveto,
k=5,
normalize=False,
n_process=5,
chr_level=False):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
# load source dictionary and invert
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
# load target dictionary and invert
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams,
f_init,
f_next,
numpy.array(seq).reshape([len(seq), 1]),
options,
trng=trng,
k=k,
maxlen=200,
stochastic=False,
argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
# utility function
def _seqs2words(caps):
capsw = []
for cc in caps:
ww = []
for w in cc:
if w == 0:
break
ww.append(word_idict_trg[w])
capsw.append(' '.join(ww))
return capsw
translations = []
print "start Translating..."
with open(source_file, 'r') as f:
for idx, line in enumerate(f):
if idx % 20 == 0:
print "%s lines done!" % idx
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: word_dict[w] if w in word_dict else 1, words)
x = map(lambda ii: ii if ii < options['n_words'] else 1, x)
x += [0]
translation = _translate(x)
translations.append(" ".join(_seqs2words([translation])))
with open(saveto, 'w') as f:
print >> f, '\n'.join(translations)
print "Finish Translating!"
def main(model, dictionary, dictionary_target, source_file, saveto, k=5,
normalize=False, n_process=5, chr_level=False):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
# load source dictionary and invert
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
# load target dictionary and invert
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
def _translate(seq):
# sample given an input sequence and obtain scores
sample, score = gen_sample(tparams, f_init, f_next,
numpy.array(seq).reshape([len(seq), 1]),
options, trng=trng, k=k, maxlen=200,
stochastic=False, argmax=False)
# normalize scores according to sequence lengths
if normalize:
lengths = numpy.array([len(s) for s in sample])
score = score / lengths
sidx = numpy.argmin(score)
return sample[sidx]
# utility function
def _seqs2words(caps):
capsw = []
for cc in caps:
ww = []
for w in cc:
if w == 0:
break
ww.append(word_idict_trg[w])
capsw.append(' '.join(ww))
return capsw
translations = []
print "start Translating..."
with open(source_file, 'r') as f:
for idx, line in enumerate(f):
if idx % 20 == 0:
print "%s lines done!" % idx
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: word_dict[w] if w in word_dict else 1, words)
x = map(lambda ii: ii if ii < options['n_words'] else 1, x)
x += [0]
translation = _translate(x)
translations.append(" ".join(_seqs2words([translation])))
with open(saveto, 'w') as f:
print >> f, '\n'.join(translations)
print "Finish Translating!"
def main(model, dictionary, dictionary_target, source_file, saveto, k=5,
normalize=False, n_process=5, chr_level=False):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
# load source dictionary and invert
with open(dictionary, 'rb') as f:
word_dict = pkl.load(f)
word_idict = dict()
for kk, vv in word_dict.iteritems():
word_idict[vv] = kk
word_idict[0] = '<eos>'
word_idict[1] = 'UNK'
# load target dictionary and invert
with open(dictionary_target, 'rb') as f:
word_dict_trg = pkl.load(f)
word_idict_trg = dict()
for kk, vv in word_dict_trg.iteritems():
word_idict_trg[vv] = kk
word_idict_trg[0] = '<eos>'
word_idict_trg[1] = 'UNK'
# utility function
def _seq2words(cc):
ww = []
for w in cc:
if w == 0:
break
ww.append(word_idict_trg[w])
return ' '.join(ww)
#init model
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
trng = RandomStreams(1234)
params = init_params(options)
params = load_params(model, params)
tparams = init_tparams(params)
# word index
f_init, f_next = build_sampler(tparams, options, trng)
trans = []
att = []
print 'Translating ', source_file, '...'
fo = open(saveto,'w')
fa = open(saveto+'.att','w')
with open(source_file, 'r') as f:
n = 0
for line in f:
n += 1
if n%10 == 0:
print n
if chr_level:
words = list(line.decode('utf-8').strip())
else:
words = line.strip().split()
x = map(lambda w: word_dict[w] if w in word_dict else 1, words)
x = map(lambda ii: ii if ii < options['n_words'] else 1, x)
x += [0]
y,a = _translate(x, tparams, f_init, f_next, options, trng, k, normalize)
trans.append(y)
att.append(a)
print >>fo,_seq2words(y)
print _seq2words(y)
for i,e in enumerate(a):
for j,p in enumerate(e):
print >>fa,'{}-{}-{}'.format(i,j,p),
print >>fa
print 'Done'
def main(model,
src_dict,
trg_dict,
src,
trg,
multibleu,
batch_size=60,
pred_dir='',
model_list=False):
if pred_dir is not '' and not os.path.exists(pred_dir):
os.makedirs(pred_dir)
if model_list:
model_list_file = model
with open(model_list_file) as f:
model = f.readline().strip()
# load dictionaries and invert them
worddicts = [None] * 2
worddicts_r = [None] * 2
for ii, dd in enumerate([src_dict, trg_dict]):
with open(dd, 'rb') as f:
worddicts[ii] = pkl.load(f)
worddicts_r[ii] = dict()
for kk, vv in worddicts[ii].iteritems():
worddicts_r[ii][vv] = kk
# load model options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
trng = RandomStreams(options['trng'])
use_noise = theano.shared(numpy.float32(0.))
# allocate model parameters
params = init_params(options)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
f_init_2, f_next_2 = build_sampler_2(tparams, options, trng, use_noise)
iterator = TextIterator(src,
trg,
src_dict,
trg_dict,
n_words_source=options['n_words_src'],
n_words_target=options['n_words'],
batch_size=batch_size,
maxlen=2000,
shuffle=False,
replace=False)
if not model_list:
try:
valid_out, valid_bleu = greedy_decoding(
options,
trg,
iterator,
worddicts_r,
tparams,
prepare_data,
gen_sample_2,
f_init_2,
f_next_2,
trng,
multibleu,
fname=os.path.join(pred_dir,
os.path.basename(model)[:-3] + 'out'),
maxlen=100,
verbose=False)
except:
valid_out = ''
valid_bleu = 0.0
print valid_out, valid_bleu
else:
best_score = 0.
best_model = ''
with open(model_list_file) as f:
for line in f:
start = time.time()
model = line.strip()
if model == '':
continue
params = load_params(model, params)
for kk, pp in params.iteritems():
tparams[kk].set_value(params[kk])
print model,
try:
valid_out, valid_bleu = greedy_decoding(
options,
trg,
iterator,
worddicts_r,
tparams,
prepare_data,
gen_sample_2,
f_init_2,
f_next_2,
trng,
multibleu,
fname=os.path.join(
pred_dir,
os.path.basename(model)[:-3] + 'out'),
maxlen=100,
verbose=False)
except:
valid_out = ''
valid_bleu = 0.0
print valid_out, valid_bleu,
if valid_bleu > best_score:
best_score = valid_bleu
best_model = model
end = time.time()
print "Time: ", end - start
print 'Best model: ', best_model
print 'Best BLEU: ', best_score
def rescore_model(source_file, nbest_file, saveto, models, options, b,
normalize, verbose, alignweights):
trng = RandomStreams(1234)
fs_log_probs = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_tparams(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, option)
inps = [x, x_mask, y, y_mask]
use_noise.set_value(0.)
if alignweights:
print "\t*** Save weight mode ON, alignment matrix will be saved."
outputs = [cost, opt_ret['dec_alphas']]
f_log_probs = theano.function(inps, outputs)
else:
print "\t*** Save weight mode OFF, alignment matrix will not be saved."
f_log_probs = theano.function(inps, cost)
fs_log_probs.append(f_log_probs)
def _score(pairs, alignweights=False):
# sample given an input sequence and obtain scores
scores = []
for i, f_log_probs in enumerate(fs_log_probs):
score_this_batch = pred_probs(f_log_probs,
prepare_data,
options[i],
pairs,
normalize=normalize,
alignweights=alignweights)
scores.append(score_this_batch)
return scores
lines = source_file.readlines()
nbest_lines = nbest_file.readlines()
if alignweights: ### opening the temporary file.
temp_name = saveto.name + ".json"
align_OUT = tempfile.NamedTemporaryFile(prefix=temp_name)
with tempfile.NamedTemporaryFile(
prefix='rescore-tmpin') as tmp_in, tempfile.NamedTemporaryFile(
prefix='rescore-tmpout') as tmp_out:
for line in nbest_lines:
linesplit = line.split(' ||| ')
idx = int(
linesplit[0]) ##index from the source file. Starting from 0.
tmp_in.write(lines[idx])
tmp_out.write(linesplit[1] + '\n')
tmp_in.seek(0)
tmp_out.seek(0)
pairs = TextIterator(
tmp_in.name,
tmp_out.name,
options[0]['dictionaries'][0],
options[0]['dictionaries'][1],
n_words_source=options[0]['n_words_src'],
n_words_target=options[0]['n_words'],
batch_size=b,
maxlen=float('inf'),
sort_by_length=False
) #TODO: sorting by length could be more efficient, but we'd have to synchronize scores with n-best list after
scores, alignments = _score(pairs, alignweights)
for i, line in enumerate(nbest_lines):
score_str = ' '.join(map(str, [s[i] for s in scores]))
saveto.write('{0} {1}\n'.format(line.strip(), score_str))
### optional save weights mode.
if alignweights:
for line in alignments:
align_OUT.write(line + "\n")
if alignweights:
combine_source_target_text(source_file, nbest_file, saveto.name,
align_OUT)
align_OUT.close()
def main(model,
dictionary_target,
source_fea,
source_latex,
saveto,
wer_file,
k=5):
# load model model_options
with open('%s.pkl' % model, 'rb') as f:
options = pkl.load(f)
# load source dictionary and invert
worddicts = load_dict(dictionary_target)
worddicts_r = [None] * len(worddicts)
for kk, vv in worddicts.iteritems():
worddicts_r[vv] = kk
valid, valid_uid_list = dataIterator_valid(source_fea,
source_latex,
worddicts,
batch_size=1,
maxlen=2000)
trng = RandomStreams(1234)
params = init_params(options)
params = load_params(model, params)
tparams = init_tparams(params)
f_init, f_next = build_sampler(tparams, options, trng)
fpp_sample = open(saveto, 'w')
valid_count_idx = 0
print 'Decoding...'
ud_epoch = 0
ud_epoch_start = time.time()
for x, y in valid:
for xx in x:
print '%d : %s' % (valid_count_idx + 1,
valid_uid_list[valid_count_idx])
xx_pad = numpy.zeros((xx.shape[0] + 1, xx.shape[1]),
dtype='float32')
xx_pad[:xx.shape[0], :] = xx
stochastic = False
sample, score = gen_sample(f_init,
f_next,
xx_pad[:, None, :],
options,
trng=trng,
k=k,
maxlen=1000,
stochastic=stochastic,
argmax=False)
if stochastic:
ss = sample
else:
score = score / numpy.array([len(s) for s in sample])
ss = sample[score.argmin()]
fpp_sample.write(valid_uid_list[valid_count_idx])
valid_count_idx = valid_count_idx + 1
for vv in ss:
if vv == 0: # <eol>
break
fpp_sample.write(' ' + worddicts_r[vv])
fpp_sample.write('\n')
fpp_sample.close()
ud_epoch = (time.time() - ud_epoch_start) / 60.
print 'test set decode done, cost time ...', ud_epoch
os.system('python compute-wer.py ' + saveto + ' ' + source_latex + ' ' +
wer_file)
fpp = open(wer_file)
stuff = fpp.readlines()
fpp.close()
m = re.search('WER (.*)\n', stuff[0])
valid_per = 100. * float(m.group(1))
m = re.search('ExpRate (.*)\n', stuff[1])
valid_sacc = 100. * float(m.group(1))
print 'Valid WER: %.2f%%, ExpRate: %.2f%%' % (valid_per, valid_sacc)
def rescore_model(source_file, target_file, saveto, models, options, b, normalize, verbose, alignweights):
trng = RandomStreams(1234)
fs_log_probs = []
for model, option in zip(models, options):
# allocate model parameters
params = init_params(option)
# load model parameters and set theano shared variables
params = load_params(model, params)
tparams = init_theano_params(params)
trng, use_noise, \
x, x_mask, y, y_mask, \
opt_ret, \
cost = \
build_model(tparams, option)
inps = [x, x_mask, y, y_mask]
use_noise.set_value(0.)
if alignweights:
sys.stderr.write("\t*** Save weight mode ON, alignment matrix will be saved.\n")
outputs = [cost, opt_ret['dec_alphas']]
f_log_probs = theano.function(inps, outputs)
else:
f_log_probs = theano.function(inps, cost)
fs_log_probs.append(f_log_probs)
def _score(pairs, alignweights=False):
# sample given an input sequence and obtain scores
scores = []
alignments = []
for i, f_log_probs in enumerate(fs_log_probs):
score, alignment = pred_probs(f_log_probs, prepare_data, options[i], pairs, normalize=normalize, alignweights = alignweights)
scores.append(score)
alignments.append(alignment)
return scores, alignments
pairs = TextIterator(source_file.name, target_file.name,
options[0]['dictionaries'][:-1], options[0]['dictionaries'][1],
n_words_source=options[0]['n_words_src'], n_words_target=options[0]['n_words'],
batch_size=b,
maxlen=float('inf'),
sort_by_length=False) #TODO: sorting by length could be more efficient, but we'd want to resort after
scores, alignments = _score(pairs, alignweights)
source_file.seek(0)
target_file.seek(0)
source_lines = source_file.readlines()
target_lines = target_file.readlines()
for i, line in enumerate(target_lines):
score_str = ' '.join(map(str,[s[i] for s in scores]))
saveto.write('{0} {1}\n'.format(line.strip(), score_str))
### optional save weights mode.
if alignweights:
### writing out the alignments.
temp_name = saveto.name + ".json"
with tempfile.NamedTemporaryFile(prefix=temp_name) as align_OUT:
for line in all_alignments:
align_OUT.write(line + "\n")
### combining the actual source and target words.
combine_source_target_text_1to1(source_file, target_file, saveto.name, align_OUT)