def generate_candidates(phrase, args, oov_lookup):
"""Given a phrase and the cmdline args, return a list of appropriate
PTEntrys"""
assert isinstance(phrase, tuple)
phrase_s = " ".join(phrase)
ptentries = phrasetable.lookup(phrase_s)
if not ptentries:
if len(phrase) > 1:
ptentries = generate_split_candidates(phrase,
args.source,
args.target)
## XXX: this seems completely correct.
if not ptentries:
frombabelnet = babelnet_candidates(phrase_s, args.source, args.target)
ptentries.extend(frombabelnet)
if not ptentries:
nospaces = "".join(phrase)
if nospaces in oov_lookup:
looked_up = oov_lookup[nospaces]
oov = PTEntry(source=phrase_s,target=looked_up,pdirect=1,pinverse=1)
ptentries.append(oov)
else:
oov = PTEntry(source=phrase_s,target="OOV",pdirect=1,pinverse=1)
ptentries.append(oov)
return ptentries
def generate_split_candidates(phrase, sl, tl):
ptentries = []
splits = list(reversed(allsplits(list(phrase))))
dprint(splits)
for split in splits:
split_strings = [" ".join(entry) for entry in split]
found = []
for entry in split_strings:
foundsomething = False
from_pt = phrasetable.lookup(entry)
if from_pt:
foundsomething = True
found.append(from_pt)
elif " " not in entry:
frombabelnet = babelnet_candidates(entry, sl, tl)
if frombabelnet:
foundsomething = True
found.append(frombabelnet)
if not foundsomething:
found.append([])
if all(found):
for assignment in itertools.product(*found):
target = " ".join(pte.target for pte in assignment)
pdirects = [pte.pdirect for pte in assignment]
pinverses = [pte.pinverse for pte in assignment]
product_pdirect = functools.reduce(operator.mul, pdirects, 1)
product_pinverse = functools.reduce(operator.mul, pinverses, 1)
entry = PTEntry(source=" ".join(phrase),
target=target,
pdirect=product_pdirect,
pinverse=product_pinverse)
ptentries.append(entry)
## XXX: magic number, or maybe "tunable hyperparameter".
if len(ptentries) == 10000:
return ptentries
return ptentries
