def dep_parse(self, sentence):
#Lazy-initialize the depparser
if self.depparser is None:
from nltk.parse import MaltParser
self.depparser = MaltParser(tagger=self.get_pos_tagger())
if not self.depparser._trained:
self.train_depparser()
return [self.depparser.parse(sentence, verbose=self.verbose)]
def dep_parse(self, sentence='every cat leaves'):
#Lazy-initialize the depparser
if self.depparser is None:
from nltk.parse import MaltParser
self.depparser = MaltParser(tagger=self.get_pos_tagger())
if not self.depparser._trained:
self.train_depparser()
tokens = sentence.split()
return [self.depparser.parse(tokens, verbose=self.verbose)]
def _init_glue(self):
tagger = RegexpTagger([
('^(David|Mary|John)$', 'NNP'),
('^(walks|sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$',
'VB'), ('^(go|order|vanish|find|approach)$', 'VB'),
('^(a)$', 'ex_quant'), ('^(every)$', 'univ_quant'),
('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
('^(big|gray|former)$', 'JJ'), ('^(him|himself)$', 'PRP')
])
depparser = MaltParser(tagger=tagger)
self._glue = DrtGlue(depparser=depparser, remove_duplicates=False)
def demo(show_example=-1):
from nltk.parse import MaltParser
examples = [
"David sees Mary",
"David eats a sandwich",
"every man chases a dog",
"every man believes a dog sleeps",
"John gives David a sandwich",
"John chases himself",
]
# 'John persuades David to order a pizza',
# 'John tries to go',
# 'John tries to find a unicorn',
# 'John seems to vanish',
# 'a unicorn seems to approach',
# 'every big cat leaves',
# 'every gray cat leaves',
# 'every big gray cat leaves',
# 'a former senator leaves',
print("============== DEMO ==============")
tagger = RegexpTagger(
[
("^(David|Mary|John)$", "NNP"),
(
"^(sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$",
"VB",
),
("^(go|order|vanish|find|approach)$", "VB"),
("^(a)$", "ex_quant"),
("^(every)$", "univ_quant"),
("^(sandwich|man|dog|pizza|unicorn|cat|senator)$", "NN"),
("^(big|gray|former)$", "JJ"),
("^(him|himself)$", "PRP"),
]
)
depparser = MaltParser(tagger=tagger)
glue = Glue(depparser=depparser, verbose=False)
for (i, sentence) in enumerate(examples):
if i == show_example or show_example == -1:
print(f"[[[Example {i}]]] {sentence}")
for reading in glue.parse_to_meaning(sentence.split()):
print(reading.simplify())
print("")
def demo(show_example=-1):
from nltk.parse import MaltParser
examples = [
'David sees Mary',
'David eats a sandwich',
'every man chases a dog',
'every man believes a dog sleeps',
'John gives David a sandwich',
'John chases himself',
]
# 'John persuades David to order a pizza',
# 'John tries to go',
# 'John tries to find a unicorn',
# 'John seems to vanish',
# 'a unicorn seems to approach',
# 'every big cat leaves',
# 'every gray cat leaves',
# 'every big gray cat leaves',
# 'a former senator leaves',
print('============== DEMO ==============')
tagger = RegexpTagger(
[
('^(David|Mary|John)$', 'NNP'),
(
'^(sees|eats|chases|believes|gives|sleeps|chases|persuades|tries|seems|leaves)$',
'VB',
),
('^(go|order|vanish|find|approach)$', 'VB'),
('^(a)$', 'ex_quant'),
('^(every)$', 'univ_quant'),
('^(sandwich|man|dog|pizza|unicorn|cat|senator)$', 'NN'),
('^(big|gray|former)$', 'JJ'),
('^(him|himself)$', 'PRP'),
]
)
depparser = MaltParser(tagger=tagger)
glue = Glue(depparser=depparser, verbose=False)
for (i, sentence) in enumerate(examples):
if i == show_example or show_example == -1:
print('[[[Example %s]]] %s' % (i, sentence))
for reading in glue.parse_to_meaning(sentence.split()):
print(reading.simplify())
print('')
def dep_parse(self, sentence):
"""
Return a dependency graph for the sentence.
:param sentence: the sentence to be parsed
:type sentence: list(str)
:rtype: DependencyGraph
"""
#Lazy-initialize the depparser
if self.depparser is None:
from nltk.parse import MaltParser
self.depparser = MaltParser(tagger=self.get_pos_tagger())
if not self.depparser._trained:
self.train_depparser()
return self.depparser.parse(sentence, verbose=self.verbose)
