def __init__(self, comparative_mgr, det_pronoun_mgr, personal_mgr,
plural_mgr, pro_adverb_mgr, say_state, time_of_day_mgr,
verb_mgr):
# For extracting the correct verb conjugation from subjects.
self.arbitrary_idiolect = Idiolect()
self.say_state = say_state
self.subject_say_context = SayContext(prep=None,
has_left=True,
has_right=True,
is_possessive=False)
self.end_punct_clf = EndPunctClassifier()
self.verb_extractor = VerbExtractor(verb_mgr)
self.comparative_mgr = comparative_mgr
self.det_pronoun_mgr = det_pronoun_mgr
self.personal_mgr = personal_mgr
self.plural_mgr = plural_mgr
self.pro_adverb_mgr = pro_adverb_mgr
self.time_of_day_mgr = time_of_day_mgr
self.tag2recognize_arg = {
'DT': self.recog_dt,
'EX': self.recog_ex,
'JJ': self.recog_jj,
'JJR': self.recog_jjr,
'NN': self.recog_nn,
'NNS': self.recog_nns,
'NNP': self.recog_nnp,
'PRP': self.recog_prp,
'WP': self.recog_wp,
}
self.tag2recognize_prep_arg = {
'RB': self.recog_rb,
'WRB': self.recog_wrb,
'RBR': self.recog_rbr,
}
self.invalid_verb_arg_root_tags = set([
'.',
'VB',
])
self.directions = """
north south east west
left right
""".split()
def __init__(self, comparative_mgr, det_pronoun_mgr, personal_mgr,
plural_mgr, pro_adverb_mgr, say_state, time_of_day_mgr,
verb_mgr):
# For extracting the correct verb conjugation from subjects.
self.arbitrary_idiolect = Idiolect()
self.say_state = say_state
self.subject_say_context = SayContext(
prep=None, has_left=True, has_right=True, is_possessive=False)
self.end_punct_clf = EndPunctClassifier()
self.verb_extractor = VerbExtractor(verb_mgr)
self.comparative_mgr = comparative_mgr
self.det_pronoun_mgr = det_pronoun_mgr
self.personal_mgr = personal_mgr
self.plural_mgr = plural_mgr
self.pro_adverb_mgr = pro_adverb_mgr
self.time_of_day_mgr = time_of_day_mgr
self.tag2recognize_arg = {
'DT': self.recog_dt,
'EX': self.recog_ex,
'JJ': self.recog_jj,
'JJR': self.recog_jjr,
'NN': self.recog_nn,
'NNS': self.recog_nns,
'NNP': self.recog_nnp,
'PRP': self.recog_prp,
'WP': self.recog_wp,
}
self.tag2recognize_prep_arg = {
'RB': self.recog_rb,
'WRB': self.recog_wrb,
'RBR': self.recog_rbr,
}
self.invalid_verb_arg_root_tags = set([
'.',
'VB',
])
self.directions = """
north south east west
left right
""".split()
class ParseToSurface(object):
"""
Object that converts parses to surface structure.
"""
def __init__(self, comparative_mgr, det_pronoun_mgr, personal_mgr,
plural_mgr, pro_adverb_mgr, say_state, time_of_day_mgr,
verb_mgr):
# For extracting the correct verb conjugation from subjects.
self.arbitrary_idiolect = Idiolect()
self.say_state = say_state
self.subject_say_context = SayContext(
prep=None, has_left=True, has_right=True, is_possessive=False)
self.end_punct_clf = EndPunctClassifier()
self.verb_extractor = VerbExtractor(verb_mgr)
self.comparative_mgr = comparative_mgr
self.det_pronoun_mgr = det_pronoun_mgr
self.personal_mgr = personal_mgr
self.plural_mgr = plural_mgr
self.pro_adverb_mgr = pro_adverb_mgr
self.time_of_day_mgr = time_of_day_mgr
self.tag2recognize_arg = {
'DT': self.recog_dt,
'EX': self.recog_ex,
'JJ': self.recog_jj,
'JJR': self.recog_jjr,
'NN': self.recog_nn,
'NNS': self.recog_nns,
'NNP': self.recog_nnp,
'PRP': self.recog_prp,
'WP': self.recog_wp,
}
self.tag2recognize_prep_arg = {
'RB': self.recog_rb,
'WRB': self.recog_wrb,
'RBR': self.recog_rbr,
}
self.invalid_verb_arg_root_tags = set([
'.',
'VB',
])
self.directions = """
north south east west
left right
""".split()
def recog_dt(self, root_token):
nn = []
for selector in self.det_pronoun_mgr.parse_pronoun(root_token.text):
n = SurfaceCommonNoun(selector=selector)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_ex(self, root_token):
p_n = (None, ExistentialThere())
return [p_n]
def recog_jj(self, root_token):
return [(None, Adjective(root_token.text))]
def recog_jjr(self, root_token):
if len(root_token.downs) != 1:
return []
rel, child = root_token.downs[0]
if rel != 'prep':
return []
if child.text != 'than':
return []
# Eg, "what is the castle [bigger than]?"
if not child.downs:
rr = []
for degree, polarity, base in \
self.comparative_mgr.decode(None, root_token.text):
n = SurfaceComparative(polarity, base, None)
rr.append((None, n))
return rr
rel, child = child.downs[0]
if rel != 'pobj':
return []
r = self.recognize_verb_arg(child)
if r is None:
return []
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
thans = map(lambda (p, n): n, pp_nn)
rr = []
for degree, polarity, base in \
self.comparative_mgr.decode(None, root_token.text):
for than in thans:
n = SurfaceComparative(polarity, base, than)
rr.append((None, n))
return rr
def recog_time_of_day(self, root_token):
if not root_token.downs:
pre = None
elif len(root_token.downs) == 1:
rel, child = root_token.downs[0]
pre = child.text
else:
return []
rr = self.time_of_day_mgr.decode(pre, root_token.text)
return map(lambda r: ((TIME_PREP,), TimeOfDay(*r)), rr)
def recog_how_many_nn_head(self, root_token, noun, n2):
many = None
for rel, child in root_token.downs:
if rel == 'amod' and child.text in ('few', 'many'):
many = child
break
if not many:
return []
how = None
for rel, child in many.downs:
if rel == 'advmod' and child.text == 'how':
how = child
number = Number(None)
correlative = Correlative.INDEF
count_restriction = self.det_pronoun_mgr.cor2res_gno[correlative][0]
selector = Selector.from_correlative(correlative, count_restriction)
assert selector
n = SurfaceCommonNoun(selector=selector, number=number, noun=noun)
return [(None, n)]
def recog_dt_nn_head(self, root_token, noun, gram_n2):
"""
* (ADJS) NN(S) "fat mice"
* DT (ADJS) NN(S) "the fat mice"
"""
downs = filter(lambda (rel, child): rel not in ('cc', 'conj', 'prep'),
root_token.downs)
if downs:
dep, child = downs[0]
if dep != 'det':
return []
s = child.text
if s == 'a' or s == 'an':
s = A_OR_AN
maybe_selectors = self.det_pronoun_mgr.parse_determiner(s)
selectors = []
for maybe_selector in maybe_selectors:
for sel in maybe_selector.restricted_to_grammatical_number(
gram_n2, self.det_pronoun_mgr.cor2res_gno):
selectors.append(sel)
else:
if gram_n2 == N2.SING:
return []
selector = Selector(
Correlative.INDEF, N5.DUAL, N5.MANY, N5.DUAL, N5.MANY)
selectors = [selector]
attrs = []
for dep, child in downs[1:]:
if dep != 'amod':
return []
attrs.append(child.text)
nn = []
for selector in selectors:
n = SurfaceCommonNoun(selector=selector, attributes=list(attrs),
noun=noun)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_posdet_nn_head(self, root_token, noun, gram_n2):
"""
* PRP$ (ADJS) NN(S)
* WP$ (ADJS) NN(S)
"""
downs = filter(lambda (rel, child): rel not in ('cc', 'conj', 'prep'),
root_token.downs)
if not downs:
return []
rel, possessor = downs[0]
if rel != 'pos':
return []
attrs = []
for rel, child in downs[1:]:
if rel != 'amod':
return []
attrs.append(child.text)
nn = []
for declension in self.personal_mgr.posdet_parse((possessor.text,)):
pos = PersonalPronoun(declension, PersonalPronounCase.OBJECT)
correlative = Correlative.DEF
count_restriction = self.det_pronoun_mgr.cor2res_gno[correlative][0]
selector = Selector.from_correlative(correlative, count_restriction)
if not selector:
continue
for selector in selector.restricted_to_grammatical_number(
gram_n2, self.det_pronoun_mgr.cor2res_gno):
n = SurfaceCommonNoun(possessor=pos, selector=selector,
attributes=list(attrs), noun=noun)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_shortcut_head(self, root_token):
pp_nn = []
ss = root_token.text,
for prep, selector, noun in self.pro_adverb_mgr.parse(ss):
n = SurfaceCommonNoun(selector=selector, noun=noun)
pp_nn.append((prep, n))
return pp_nn
def recog_common_noun_head(self, root_token, noun, n2):
pp_nn = []
pp_nn += self.recog_how_many_nn_head(root_token, noun, n2)
pp_nn += self.recog_dt_nn_head(root_token, noun, n2)
pp_nn += self.recog_posdet_nn_head(root_token, noun, n2)
pp_nn += self.recog_shortcut_head(root_token)
return pp_nn
def recog_common_noun_tail(self, root_token):
preps_optionss = []
for rel, child in root_token.downs:
if rel != 'prep':
continue
if len(child.downs) != 1:
continue
rel, grandchild = child.downs[0]
if rel != 'pobj':
continue
r = self.recognize_verb_arg(grandchild)
if r is None:
return None
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
nn = map(lambda (p, n): n, pp_nn)
prep = child.text,
preps_optionss.append((prep, nn))
return preps_optionss
def recog_common_noun(self, root_token, noun, n2):
head_pp_nn = self.recog_common_noun_head(root_token, noun, n2)
preps_optionss = self.recog_common_noun_tail(root_token)
if not preps_optionss:
return head_pp_nn
rr = []
tail_preps, tail_optionss = zip(*preps_optionss)
for head_p, head_n in head_pp_nn:
for tail_options in product(*tail_optionss):
n = deepcopy(head_n)
n.preps_nargs = zip(tail_preps, tail_options)
rr.append((head_p, n))
return rr
def recog_direction(self, root_token):
if root_token.text not in self.directions:
return []
z = len(root_token.downs)
if z == 0:
return []
elif z == 1:
(prep, of), = root_token.downs
elif z == 2:
(det, dt), (prep, of) = root_token.downs
if det != 'det':
return []
if dt.tag != 'DT':
return []
else:
return []
if prep != 'prep':
return []
if of.text != 'of':
return []
# Eg, "what is the castle [east of _]?"
if not of.downs:
n = SurfaceDirection(root_token.text, None)
return [(None, n)]
dep, child = of.downs[0]
if dep != 'pobj':
return []
r = self.recognize_verb_arg(child)
if r is None:
return None
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
ofs = map(lambda (p, n): n, pp_nn)
pp_nn = []
for of in ofs:
d = SurfaceDirection(root_token.text, of)
pp_nn.append((None, d))
return pp_nn
def recog_nn(self, root_token):
"""
Eg, cat.
"""
rr = self.recog_time_of_day(root_token)
if rr:
return rr
rr = self.recog_direction(root_token)
if rr:
return rr
sing = root_token.text
rr = self.recog_common_noun(root_token, sing, N2.SING)
return rr
def recog_nns(self, root_token):
"""
Eg, cats.
"""
rr = []
for sing in self.plural_mgr.to_singular(root_token.text):
for r in self.recog_common_noun(root_token, sing, N2.PLUR):
rr.append(r)
return rr
def recog_nnp(self, root_token):
"""
Eg, James.
"""
name = root_token.text,
n = ProperNoun(name=name, is_plur=False)
return [(None, n)]
def recog_prp(self, root_token):
"""
Eg, you.
"""
ss = root_token.text,
nn = self.personal_mgr.perspro_parse(ss)
return map(lambda n: (None, n), nn)
def recog_wp(self, root_token):
"""
Eg, who.
"""
nn = []
# For WP like "what".
for selector in self.det_pronoun_mgr.parse_pronoun(root_token.text):
n = SurfaceCommonNoun(selector=selector)
nn.append(n)
# For WP like "who".
ss = root_token.text,
nn += self.personal_mgr.perspro_parse(ss)
return map(lambda n: (None, n), nn)
def recog_adverb(self, root_token):
"""
We don't normally bother with adverbs, but do recognize pro-adverbs as
actually being (prep, argument) pairs encoded into a single word.
"""
return self.recog_shortcut_head(root_token)
def recog_rb(self, root_token):
"""
Eg, here.
Returns None on failure (regular adverb, which we don't accept as args
yet).
"""
rr = self.recog_adverb(root_token)
if rr:
return rr
return None
def recog_wrb(self, root_token):
"""
Eg, where.
"""
return self.recog_adverb(root_token)
def recog_rbr(self, root_token):
"""
For bAbi, as a verb argument, just present in invalid parses?
"""
return None
def recognize_verb_arg(self, root_token):
"""
Token -> None or list of (prep or None, SurfaceArgument)
Returns None if we reject (do not recognize as an arg) the arg.
"""
while True:
f = self.tag2recognize_arg.get(root_token.tag)
if f:
rr = f(root_token)
break
f = self.tag2recognize_prep_arg.get(root_token.tag)
if f:
rr = f(root_token)
break
if root_token.tag in self.invalid_verb_arg_root_tags:
rr = []
break
print 'Unknown tag:', root_token.tag
assert False
if not rr:
return rr
op = None
for rel, child in root_token.downs:
if rel != 'cc':
continue
op = STR2CONJUNCTION.get(child.text)
break
if not op:
return rr
for rel, child in root_token.downs:
if rel == 'conj':
# TODO: generalize this later.
other_pp_nn = self.recognize_verb_arg(child)
if not other_pp_nn:
return other_pp_nn
rr2 = []
for prep, n in rr:
for other_prep, other_n in other_pp_nn:
r2 = prep, SurfaceConjunction(op, [n, other_n])
rr2.append(r2)
return rr2
return rr
def find_subject(self, verb_span_pair, varg_root_indexes):
"""
args -> (subj arg index, vmain index) or None if impossible
"""
a, b = verb_span_pair
if a and b:
# Both spans ("would you see?"): find the argument that goes between
# the spans.
for i, arg in enumerate(varg_root_indexes):
if a[1] < arg < b[0]:
return i, i + 1
assert False
elif a:
# We must have args. Otherwise, it's not possible.
if not varg_root_indexes:
return None
# Just the pre span ("would you?"): find the argument directly
# after the verb words.
for i, arg in enumerate(varg_root_indexes):
if a[1] < arg:
return i, i + 1
# If there are no args afterward, it isn't possible.
return None
elif b:
# Just the main span ("you would", "go!").
# If no args, we're done.
if not varg_root_indexes:
return None, 0
# Find the argument preceding the one directly after the verb words,
# or subject index = None if no subject (imperative).
for i, arg in enumerate(varg_root_indexes):
if b[1] < arg:
if 0 <= i - 1:
return i - 1, i
else:
return None, i
# Didn't find any argument after the verb, so the last one is the
# subject. TODO: "because of that, go!" -> because is not
# imperative subject.
n = len(varg_root_indexes) - 1
return n, n + 1
else:
assert False
def extract_verb_args(self, root_token, verb_span_pair):
"""
(root token, verb span pair) -> args or None if impossible
Where args are (subj arg index, vmain idx, options per arg), where an
option is a (prep, verb arg).
"""
varg_root_indexes = []
ppp_nnn = []
adverbs = []
for rel, t in root_token.downs:
if rel not in ('nsubj', 'nsubjpass', 'agent', 'dobj', 'dative',
'expl', 'attr', 'advmod', 'prep', 'compound',
'npadvmod', 'acomp'):
continue
if rel == 'advmod':
for rel, down in t.downs:
if down.text == 'no':
adverbs.append(down.text)
if t.text == 'longer':
adverbs.append(t.text)
continue
if rel == 'agent':
prep = 'by',
if not t.downs:
pp_nn = [(prep, None)]
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
continue
assert len(t.downs) == 1
rel, down = t.downs[0]
assert rel == 'pobj'
t = down
elif t.tag == 'IN':
if t.downs:
# Skip the conjunctions.
downs = filter(lambda (rel, child): rel == 'pobj', t.downs)
if len(downs) != 1:
continue
prep = t.text,
t = downs[0][1]
else:
p = t.text,
pp_nn = [(p, None)]
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
continue
else:
prep = None
r = self.recognize_verb_arg(t)
if r is None:
continue
pp_nn = r
"""
if rel == 'npadvmod':
for i, (p, n) in enumerate(pp_nn):
if not p:
pp_nn[i] = (TIME_PREP,), n
"""
spoken_preps = [prep] * len(pp_nn)
absorbed_preps, vargs = zip(*pp_nn) if pp_nn else ([], [])
pp_nn = []
for spoken_prep, absorbed_prep, varg in \
zip(spoken_preps, absorbed_preps, vargs):
if spoken_prep:
prep = spoken_prep
elif absorbed_prep:
prep = absorbed_prep
else:
prep = None
pp_nn.append((prep, varg))
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
r = self.find_subject(verb_span_pair, varg_root_indexes)
if r is None:
return None
subj_argx, vmain_index = r
return subj_argx, vmain_index, ppp_nnn, adverbs
def conjs_from_verb(self, v):
"""
recognized verb with wildcards -> possible conjugations
"""
# If the verb's field is a wildcard, it could be any of them.
if v.conj == None:
v_conjs = Conjugation.values
else:
v_conjs = set([v.conj])
# If imperative, it just be conjugated second person.
if v.intrinsics.modality.flavor == ModalFlavor.IMPERATIVE:
v_conjs &= set([Conjugation.S2, Conjugation.P2])
return v_conjs
def conjs_from_verb_args(self, pp_nn, subj_argx):
"""
verb arguments -> possible conjugations
"""
# It's possible to have no subject, in the case of imperatives. In that
# case, choose second person.
if subj_argx is None:
return set([Conjugation.S2, Conjugation.P2])
# Get the required conjugation from the subject.
subj_n = pp_nn[subj_argx][1]
conj = subj_n.decide_conjugation(
self.say_state, self.arbitrary_idiolect,
self.subject_say_context)
# In case of existential there, get conjugation from the object instead.
if not conj:
x = subj_argx + 1
if not (0 <= x < len(pp_nn)):
return set([]) # Ex-there but no object = can't parse it.
conj = pp_nn[x][1].decide_conjugation(
self.say_state, self.arbitrary_idiolect,
self.subject_say_context)
return set([conj])
def possible_conjugations(self, v, pp_nn, subj_argx):
"""
verb and arguments -> possible conjugations
Verb agreement.
"""
v_conjs = self.conjs_from_verb(v)
n_conjs = self.conjs_from_verb_args(pp_nn, subj_argx)
return v_conjs & n_conjs
def recognize_clause(self, root_token, is_root_clause):
"""
root token -> yields SurfaceContentClause
"""
cc = []
for verb_span_pair, vv in \
self.verb_extractor.extract(root_token, is_root_clause):
# Hack to compensate for a bug in imperative verb saying.
if verb_span_pair[0] and not verb_span_pair[1]:
vv = filter(lambda v: not v.is_imperative(), vv)
if not vv:
continue
r = self.extract_verb_args(root_token, verb_span_pair)
if r is None:
continue
subj_argx, vmain_index, ppp_nnn, adverbs = r
if subj_argx is None:
vv = filter(lambda v: v.is_imperative(), vv)
else:
assert 0 <= subj_argx < len(ppp_nnn)
for v in vv:
for pp_nn in product(*ppp_nnn):
pp_nn = list(pp_nn)
for conj in self.possible_conjugations(v, pp_nn, subj_argx):
complementizer = Complementizer.ZERO
new_v = deepcopy(v)
new_v.conj = conj
c = SurfaceContentClause(
complementizer, new_v, adverbs, deepcopy(pp_nn),
vmain_index)
cc.append(c)
return cc
def recog(self, parse):
"""
Parse -> yields SurfaceSentence
"""
assert isinstance(parse, Parse)
assert parse.tokens
end_punct = self.end_punct_clf.classify(parse.tokens[-1].text)
for clause in self.recognize_clause(parse.root, is_root_clause=True):
if '?' in end_punct and clause.verb.is_imperative():
continue
yield SurfaceSentence(clause, end_punct)
class ParseToSurface(object):
"""
Object that converts parses to surface structure.
"""
def __init__(self, comparative_mgr, det_pronoun_mgr, personal_mgr,
plural_mgr, pro_adverb_mgr, say_state, time_of_day_mgr,
verb_mgr):
# For extracting the correct verb conjugation from subjects.
self.arbitrary_idiolect = Idiolect()
self.say_state = say_state
self.subject_say_context = SayContext(prep=None,
has_left=True,
has_right=True,
is_possessive=False)
self.end_punct_clf = EndPunctClassifier()
self.verb_extractor = VerbExtractor(verb_mgr)
self.comparative_mgr = comparative_mgr
self.det_pronoun_mgr = det_pronoun_mgr
self.personal_mgr = personal_mgr
self.plural_mgr = plural_mgr
self.pro_adverb_mgr = pro_adverb_mgr
self.time_of_day_mgr = time_of_day_mgr
self.tag2recognize_arg = {
'DT': self.recog_dt,
'EX': self.recog_ex,
'JJ': self.recog_jj,
'JJR': self.recog_jjr,
'NN': self.recog_nn,
'NNS': self.recog_nns,
'NNP': self.recog_nnp,
'PRP': self.recog_prp,
'WP': self.recog_wp,
}
self.tag2recognize_prep_arg = {
'RB': self.recog_rb,
'WRB': self.recog_wrb,
'RBR': self.recog_rbr,
}
self.invalid_verb_arg_root_tags = set([
'.',
'VB',
])
self.directions = """
north south east west
left right
""".split()
def recog_dt(self, root_token):
nn = []
for selector in self.det_pronoun_mgr.parse_pronoun(root_token.text):
n = SurfaceCommonNoun(selector=selector)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_ex(self, root_token):
p_n = (None, ExistentialThere())
return [p_n]
def recog_jj(self, root_token):
return [(None, Adjective(root_token.text))]
def recog_jjr(self, root_token):
if len(root_token.downs) != 1:
return []
rel, child = root_token.downs[0]
if rel != 'prep':
return []
if child.text != 'than':
return []
# Eg, "what is the castle [bigger than]?"
if not child.downs:
rr = []
for degree, polarity, base in \
self.comparative_mgr.decode(None, root_token.text):
n = SurfaceComparative(polarity, base, None)
rr.append((None, n))
return rr
rel, child = child.downs[0]
if rel != 'pobj':
return []
r = self.recognize_verb_arg(child)
if r is None:
return []
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
thans = map(lambda (p, n): n, pp_nn)
rr = []
for degree, polarity, base in \
self.comparative_mgr.decode(None, root_token.text):
for than in thans:
n = SurfaceComparative(polarity, base, than)
rr.append((None, n))
return rr
def recog_time_of_day(self, root_token):
if not root_token.downs:
pre = None
elif len(root_token.downs) == 1:
rel, child = root_token.downs[0]
pre = child.text
else:
return []
rr = self.time_of_day_mgr.decode(pre, root_token.text)
return map(lambda r: ((TIME_PREP, ), TimeOfDay(*r)), rr)
def recog_how_many_nn_head(self, root_token, noun, n2):
many = None
for rel, child in root_token.downs:
if rel == 'amod' and child.text in ('few', 'many'):
many = child
break
if not many:
return []
how = None
for rel, child in many.downs:
if rel == 'advmod' and child.text == 'how':
how = child
number = Number(None)
correlative = Correlative.INDEF
count_restriction = self.det_pronoun_mgr.cor2res_gno[correlative][0]
selector = Selector.from_correlative(correlative, count_restriction)
assert selector
n = SurfaceCommonNoun(selector=selector, number=number, noun=noun)
return [(None, n)]
def recog_dt_nn_head(self, root_token, noun, gram_n2):
"""
* (ADJS) NN(S) "fat mice"
* DT (ADJS) NN(S) "the fat mice"
"""
downs = filter(lambda (rel, child): rel not in ('cc', 'conj', 'prep'),
root_token.downs)
if downs:
dep, child = downs[0]
if dep != 'det':
return []
s = child.text
if s == 'a' or s == 'an':
s = A_OR_AN
maybe_selectors = self.det_pronoun_mgr.parse_determiner(s)
selectors = []
for maybe_selector in maybe_selectors:
for sel in maybe_selector.restricted_to_grammatical_number(
gram_n2, self.det_pronoun_mgr.cor2res_gno):
selectors.append(sel)
else:
if gram_n2 == N2.SING:
return []
selector = Selector(Correlative.INDEF, N5.DUAL, N5.MANY, N5.DUAL,
N5.MANY)
selectors = [selector]
attrs = []
for dep, child in downs[1:]:
if dep != 'amod':
return []
attrs.append(child.text)
nn = []
for selector in selectors:
n = SurfaceCommonNoun(selector=selector,
attributes=list(attrs),
noun=noun)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_posdet_nn_head(self, root_token, noun, gram_n2):
"""
* PRP$ (ADJS) NN(S)
* WP$ (ADJS) NN(S)
"""
downs = filter(lambda (rel, child): rel not in ('cc', 'conj', 'prep'),
root_token.downs)
if not downs:
return []
rel, possessor = downs[0]
if rel != 'pos':
return []
attrs = []
for rel, child in downs[1:]:
if rel != 'amod':
return []
attrs.append(child.text)
nn = []
for declension in self.personal_mgr.posdet_parse((possessor.text, )):
pos = PersonalPronoun(declension, PersonalPronounCase.OBJECT)
correlative = Correlative.DEF
count_restriction = self.det_pronoun_mgr.cor2res_gno[correlative][
0]
selector = Selector.from_correlative(correlative,
count_restriction)
if not selector:
continue
for selector in selector.restricted_to_grammatical_number(
gram_n2, self.det_pronoun_mgr.cor2res_gno):
n = SurfaceCommonNoun(possessor=pos,
selector=selector,
attributes=list(attrs),
noun=noun)
nn.append(n)
return map(lambda n: (None, n), nn)
def recog_shortcut_head(self, root_token):
pp_nn = []
ss = root_token.text,
for prep, selector, noun in self.pro_adverb_mgr.parse(ss):
n = SurfaceCommonNoun(selector=selector, noun=noun)
pp_nn.append((prep, n))
return pp_nn
def recog_common_noun_head(self, root_token, noun, n2):
pp_nn = []
pp_nn += self.recog_how_many_nn_head(root_token, noun, n2)
pp_nn += self.recog_dt_nn_head(root_token, noun, n2)
pp_nn += self.recog_posdet_nn_head(root_token, noun, n2)
pp_nn += self.recog_shortcut_head(root_token)
return pp_nn
def recog_common_noun_tail(self, root_token):
preps_optionss = []
for rel, child in root_token.downs:
if rel != 'prep':
continue
if len(child.downs) != 1:
continue
rel, grandchild = child.downs[0]
if rel != 'pobj':
continue
r = self.recognize_verb_arg(grandchild)
if r is None:
return None
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
nn = map(lambda (p, n): n, pp_nn)
prep = child.text,
preps_optionss.append((prep, nn))
return preps_optionss
def recog_common_noun(self, root_token, noun, n2):
head_pp_nn = self.recog_common_noun_head(root_token, noun, n2)
preps_optionss = self.recog_common_noun_tail(root_token)
if not preps_optionss:
return head_pp_nn
rr = []
tail_preps, tail_optionss = zip(*preps_optionss)
for head_p, head_n in head_pp_nn:
for tail_options in product(*tail_optionss):
n = deepcopy(head_n)
n.preps_nargs = zip(tail_preps, tail_options)
rr.append((head_p, n))
return rr
def recog_direction(self, root_token):
if root_token.text not in self.directions:
return []
z = len(root_token.downs)
if z == 0:
return []
elif z == 1:
(prep, of), = root_token.downs
elif z == 2:
(det, dt), (prep, of) = root_token.downs
if det != 'det':
return []
if dt.tag != 'DT':
return []
else:
return []
if prep != 'prep':
return []
if of.text != 'of':
return []
# Eg, "what is the castle [east of _]?"
if not of.downs:
n = SurfaceDirection(root_token.text, None)
return [(None, n)]
dep, child = of.downs[0]
if dep != 'pobj':
return []
r = self.recognize_verb_arg(child)
if r is None:
return None
pp_nn = r
pp_nn = filter(lambda (p, n): not p, pp_nn)
ofs = map(lambda (p, n): n, pp_nn)
pp_nn = []
for of in ofs:
d = SurfaceDirection(root_token.text, of)
pp_nn.append((None, d))
return pp_nn
def recog_nn(self, root_token):
"""
Eg, cat.
"""
rr = self.recog_time_of_day(root_token)
if rr:
return rr
rr = self.recog_direction(root_token)
if rr:
return rr
sing = root_token.text
rr = self.recog_common_noun(root_token, sing, N2.SING)
return rr
def recog_nns(self, root_token):
"""
Eg, cats.
"""
rr = []
for sing in self.plural_mgr.to_singular(root_token.text):
for r in self.recog_common_noun(root_token, sing, N2.PLUR):
rr.append(r)
return rr
def recog_nnp(self, root_token):
"""
Eg, James.
"""
name = root_token.text,
n = ProperNoun(name=name, is_plur=False)
return [(None, n)]
def recog_prp(self, root_token):
"""
Eg, you.
"""
ss = root_token.text,
nn = self.personal_mgr.perspro_parse(ss)
return map(lambda n: (None, n), nn)
def recog_wp(self, root_token):
"""
Eg, who.
"""
nn = []
# For WP like "what".
for selector in self.det_pronoun_mgr.parse_pronoun(root_token.text):
n = SurfaceCommonNoun(selector=selector)
nn.append(n)
# For WP like "who".
ss = root_token.text,
nn += self.personal_mgr.perspro_parse(ss)
return map(lambda n: (None, n), nn)
def recog_adverb(self, root_token):
"""
We don't normally bother with adverbs, but do recognize pro-adverbs as
actually being (prep, argument) pairs encoded into a single word.
"""
return self.recog_shortcut_head(root_token)
def recog_rb(self, root_token):
"""
Eg, here.
Returns None on failure (regular adverb, which we don't accept as args
yet).
"""
rr = self.recog_adverb(root_token)
if rr:
return rr
return None
def recog_wrb(self, root_token):
"""
Eg, where.
"""
return self.recog_adverb(root_token)
def recog_rbr(self, root_token):
"""
For bAbi, as a verb argument, just present in invalid parses?
"""
return None
def recognize_verb_arg(self, root_token):
"""
Token -> None or list of (prep or None, SurfaceArgument)
Returns None if we reject (do not recognize as an arg) the arg.
"""
while True:
f = self.tag2recognize_arg.get(root_token.tag)
if f:
rr = f(root_token)
break
f = self.tag2recognize_prep_arg.get(root_token.tag)
if f:
rr = f(root_token)
break
if root_token.tag in self.invalid_verb_arg_root_tags:
rr = []
break
print 'Unknown tag:', root_token.tag
assert False
if not rr:
return rr
op = None
for rel, child in root_token.downs:
if rel != 'cc':
continue
op = STR2CONJUNCTION.get(child.text)
break
if not op:
return rr
for rel, child in root_token.downs:
if rel == 'conj':
# TODO: generalize this later.
other_pp_nn = self.recognize_verb_arg(child)
if not other_pp_nn:
return other_pp_nn
rr2 = []
for prep, n in rr:
for other_prep, other_n in other_pp_nn:
r2 = prep, SurfaceConjunction(op, [n, other_n])
rr2.append(r2)
return rr2
return rr
def find_subject(self, verb_span_pair, varg_root_indexes):
"""
args -> (subj arg index, vmain index) or None if impossible
"""
a, b = verb_span_pair
if a and b:
# Both spans ("would you see?"): find the argument that goes between
# the spans.
for i, arg in enumerate(varg_root_indexes):
if a[1] < arg < b[0]:
return i, i + 1
assert False
elif a:
# We must have args. Otherwise, it's not possible.
if not varg_root_indexes:
return None
# Just the pre span ("would you?"): find the argument directly
# after the verb words.
for i, arg in enumerate(varg_root_indexes):
if a[1] < arg:
return i, i + 1
# If there are no args afterward, it isn't possible.
return None
elif b:
# Just the main span ("you would", "go!").
# If no args, we're done.
if not varg_root_indexes:
return None, 0
# Find the argument preceding the one directly after the verb words,
# or subject index = None if no subject (imperative).
for i, arg in enumerate(varg_root_indexes):
if b[1] < arg:
if 0 <= i - 1:
return i - 1, i
else:
return None, i
# Didn't find any argument after the verb, so the last one is the
# subject. TODO: "because of that, go!" -> because is not
# imperative subject.
n = len(varg_root_indexes) - 1
return n, n + 1
else:
assert False
def extract_verb_args(self, root_token, verb_span_pair):
"""
(root token, verb span pair) -> args or None if impossible
Where args are (subj arg index, vmain idx, options per arg), where an
option is a (prep, verb arg).
"""
varg_root_indexes = []
ppp_nnn = []
adverbs = []
for rel, t in root_token.downs:
if rel not in ('nsubj', 'nsubjpass', 'agent', 'dobj', 'dative',
'expl', 'attr', 'advmod', 'prep', 'compound',
'npadvmod', 'acomp'):
continue
if rel == 'advmod':
for rel, down in t.downs:
if down.text == 'no':
adverbs.append(down.text)
if t.text == 'longer':
adverbs.append(t.text)
continue
if rel == 'agent':
prep = 'by',
if not t.downs:
pp_nn = [(prep, None)]
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
continue
assert len(t.downs) == 1
rel, down = t.downs[0]
assert rel == 'pobj'
t = down
elif t.tag == 'IN':
if t.downs:
# Skip the conjunctions.
downs = filter(lambda (rel, child): rel == 'pobj', t.downs)
if len(downs) != 1:
continue
prep = t.text,
t = downs[0][1]
else:
p = t.text,
pp_nn = [(p, None)]
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
continue
else:
prep = None
r = self.recognize_verb_arg(t)
if r is None:
continue
pp_nn = r
"""
if rel == 'npadvmod':
for i, (p, n) in enumerate(pp_nn):
if not p:
pp_nn[i] = (TIME_PREP,), n
"""
spoken_preps = [prep] * len(pp_nn)
absorbed_preps, vargs = zip(*pp_nn) if pp_nn else ([], [])
pp_nn = []
for spoken_prep, absorbed_prep, varg in \
zip(spoken_preps, absorbed_preps, vargs):
if spoken_prep:
prep = spoken_prep
elif absorbed_prep:
prep = absorbed_prep
else:
prep = None
pp_nn.append((prep, varg))
ppp_nnn.append(pp_nn)
varg_root_indexes.append(t.index)
r = self.find_subject(verb_span_pair, varg_root_indexes)
if r is None:
return None
subj_argx, vmain_index = r
return subj_argx, vmain_index, ppp_nnn, adverbs
def conjs_from_verb(self, v):
"""
recognized verb with wildcards -> possible conjugations
"""
# If the verb's field is a wildcard, it could be any of them.
if v.conj == None:
v_conjs = Conjugation.values
else:
v_conjs = set([v.conj])
# If imperative, it just be conjugated second person.
if v.intrinsics.modality.flavor == ModalFlavor.IMPERATIVE:
v_conjs &= set([Conjugation.S2, Conjugation.P2])
return v_conjs
def conjs_from_verb_args(self, pp_nn, subj_argx):
"""
verb arguments -> possible conjugations
"""
# It's possible to have no subject, in the case of imperatives. In that
# case, choose second person.
if subj_argx is None:
return set([Conjugation.S2, Conjugation.P2])
# Get the required conjugation from the subject.
subj_n = pp_nn[subj_argx][1]
conj = subj_n.decide_conjugation(self.say_state,
self.arbitrary_idiolect,
self.subject_say_context)
# In case of existential there, get conjugation from the object instead.
if not conj:
x = subj_argx + 1
if not (0 <= x < len(pp_nn)):
return set([]) # Ex-there but no object = can't parse it.
conj = pp_nn[x][1].decide_conjugation(self.say_state,
self.arbitrary_idiolect,
self.subject_say_context)
return set([conj])
def possible_conjugations(self, v, pp_nn, subj_argx):
"""
verb and arguments -> possible conjugations
Verb agreement.
"""
v_conjs = self.conjs_from_verb(v)
n_conjs = self.conjs_from_verb_args(pp_nn, subj_argx)
return v_conjs & n_conjs
def recognize_clause(self, root_token, is_root_clause):
"""
root token -> yields SurfaceContentClause
"""
cc = []
for verb_span_pair, vv in \
self.verb_extractor.extract(root_token, is_root_clause):
# Hack to compensate for a bug in imperative verb saying.
if verb_span_pair[0] and not verb_span_pair[1]:
vv = filter(lambda v: not v.is_imperative(), vv)
if not vv:
continue
r = self.extract_verb_args(root_token, verb_span_pair)
if r is None:
continue
subj_argx, vmain_index, ppp_nnn, adverbs = r
if subj_argx is None:
vv = filter(lambda v: v.is_imperative(), vv)
else:
assert 0 <= subj_argx < len(ppp_nnn)
for v in vv:
for pp_nn in product(*ppp_nnn):
pp_nn = list(pp_nn)
for conj in self.possible_conjugations(
v, pp_nn, subj_argx):
complementizer = Complementizer.ZERO
new_v = deepcopy(v)
new_v.conj = conj
c = SurfaceContentClause(complementizer, new_v,
adverbs, deepcopy(pp_nn),
vmain_index)
cc.append(c)
return cc
def recog(self, parse):
"""
Parse -> yields SurfaceSentence
"""
assert isinstance(parse, Parse)
assert parse.tokens
end_punct = self.end_punct_clf.classify(parse.tokens[-1].text)
for clause in self.recognize_clause(parse.root, is_root_clause=True):
if '?' in end_punct and clause.verb.is_imperative():
continue
yield SurfaceSentence(clause, end_punct)
