def generate_phrase(self, pool):
try:
adj = choice(list(pool.adjectives))
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
#adj = choice(list(pool.adjectives))
noun = choice(list(pool.comparisons[adj]))
if en.noun.plural(noun.name) == noun.name:
article = "the"
else:
article = en.noun.article(noun.name).split(" ")[0]
replace_words = {'adj': adj, 'n': noun, 'det': article}
for pos in replace_words:
while pos in phrase:
try:
phrase = self.replace_pos(pos, replace_words[pos],
phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
except:
return
def generate_phrase(self, pool):
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
noun = choice(list(pool.nouns))
try:
replace_words = {'n':[noun], 'v': [Word(self.conjugate(v.name)) for v in list(pool.verbs[noun])],
'adj': pool.epithets[noun],
'atv':[Word(self.conjugate(v, self.person)) for v in self.atv],
'eva':[Word(self.conjugate(v, self.person)) for v in self.eva],
'ej': pool.emotional_adjectives,'en':pool.emotional_nouns,
'erb': pool.emotional_adverbs, 'person':[Word(self.persons[self.person][0])],
'pron':[Word(self.persons[self.person][1])]}
except:
return
for pos in replace_words:
while pos in phrase:
try:
word = choice(replace_words[pos])
phrase = self.replace_pos(pos,word,phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
def generate_phrase(self, pool):
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
noun = choice(list(pool.nouns))
try:
replace_words = {
'n': [noun],
'v':
[Word(self.conjugate(v.name)) for v in list(pool.verbs[noun])],
'adj': pool.epithets[noun],
'atv':
[Word(self.conjugate(v, self.person)) for v in self.atv],
'eva':
[Word(self.conjugate(v, self.person)) for v in self.eva],
'ej': pool.emotional_adjectives,
'en': pool.emotional_nouns,
'erb': pool.emotional_adverbs,
'person': [Word(self.persons[self.person][0])],
'pron': [Word(self.persons[self.person][1])]
}
except:
return
for pos in replace_words:
while pos in phrase:
try:
word = choice(replace_words[pos])
phrase = self.replace_pos(pos, word, phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
def generate_name(G):
grammar = CFG.fromstring(G)
parser = ChartParser(grammar)
gr = parser.grammar()
tokens = produce(gr, gr.start())
name = ''.join(tokens)
return name.title()
def generate_entities_question(attr, entities, phase):
entity = get_attribute_name(attr, entities)
parser = ChartParser(generate_entities_grammar(entity, phase))
gr = parser.grammar()
question = {
'text': ' '.join(produce(gr, gr.start())),
'answer': 0,
'questionId': 0,
'attrId': attr,
'topicId': 3
}
return question
def generate_impacts_question(attr, impacts, phase):
impact = get_attribute_name(attr, impacts)
parser = ChartParser(generate_impacts_grammar(impact, phase))
gr = parser.grammar()
question = {
'text': ' '.join(produce(gr, gr.start())),
'answer': 0,
'questionId': 0,
'attrId': attr,
'topicId': 4
}
return question
def generate_sources_question(attr, parent_attr, sources, phase):
id = attr
attribute = get_attribute_name(attr, sources)
attribute = analyze_numerus(attribute)
if parent_attr is not None:
parent_attr = get_attribute_name(parent_attr, sources)
parser = ChartParser(
generate_sources_grammar(attribute, parent_attr, phase))
gr = parser.grammar()
question = {
'text': ' '.join(produce(gr, gr.start())),
'answer': 0,
'questionId': 0,
'attrId': id,
'topicId': 1
}
return question
def generate_phrase(self):
adj = choice([a for a in self.blackboard.pool.comparisons if len(self.blackboard.pool.comparisons[a]) > 0])
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
noun = choice(list(self.blackboard.pool.comparisons[adj]))
noun.name = en.singularize(noun.name)
article = en.referenced(noun.name).split(" ")[0]
replace_words = {'adj': adj, 'n': noun, 'det': article}
for pos in replace_words:
while pos in phrase:
try:
phrase = self.replace_pos(
pos, replace_words[pos], phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
def generate_phrase(self, pool):
noun = random.choice(list(pool.nouns))
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
phrase.append("?")
try:
adj = choice(pool.epithets[noun])
except:
return
replace_words = {'adj':adj, 'n': noun, 'be': self.conjugate("be")}
for pos in replace_words:
while pos in phrase:
try:
phrase = self.replace_pos(pos,replace_words[pos],phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
def generate_phrase(self, pool):
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
noun = random.choice(list(pool.nouns))
adj = choice(pool.epithets[noun])
replace_words = {
"adj": adj,
"n": noun,
"be": self.conjugate("be", self.person),
"person": self.persons[self.person][0],
}
for pos in replace_words:
while pos in phrase:
try:
phrase = self.replace_pos(pos, replace_words[pos], phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
def generate_phrase(self, pool):
noun = random.choice(list(pool.nouns))
parser = ChartParser(self.grammar)
gr = parser.grammar()
phrase = self.produce(gr, gr.start())
phrase.append("?")
try:
adj = choice(pool.epithets[noun])
except:
return
replace_words = {'adj': adj, 'n': noun, 'be': self.conjugate("be")}
for pos in replace_words:
while pos in phrase:
try:
phrase = self.replace_pos(pos, replace_words[pos], phrase)
except:
return
for w in phrase:
if not isinstance(w, Word):
phrase[phrase.index(w)] = Word(w)
return phrase
S -> LImports LRules
LImports -> Import LImports |
Import -> '@import' '"string"' ';'
LRules -> Rule LRules |
Rule -> Selectors '{' LDeclaretions '}'
LDeclaretions -> Declaration ';' MoreDeclerations
MoreDeclerations -> LDeclaretions |
Selectors -> SimpleSelector MoreSelectors
MoreSelectors -> Selectors |
SimpleSelector -> Astrisk SelectorModifier
Astrisk -> '*' |
SelectorModifier -> '.' 'name' | ':' 'name' | '[' 'name' '=' Term ']' | '#hashid' | 'name'
Declaration -> 'name' ':' LTerms Important
Important -> '!ImPoRtAnT' |
LTerms -> Term MoreTerms
MoreTerms -> LTerms |
Term -> '1337' | '15%' | '"string"' | 'name' | '#hashid'
""")
parser = ChartParser(grammar)
gr = parser.grammar()
test_name = "generated"
with open(test_name + '.in', 'w+') as writer:
writer.write(' '.join(produce(gr, gr.start())))
with open(test_name + '.out', 'w+') as writer:
writer.write("\n".join(map(str, rules)))
writer.write("\nSuccess\n")
else:
words.extend(produce(grammar, sym, minlen))
return words
grammar = parse_cfg('''
F -> N1 '(' P ')' | N2 '(' P ',' P ')'
N1 -> 'half'
N2 -> 'sum'
P -> 'a' | 'b' | F
''')
'''
S -> NP VP
PP -> P NP
NP -> Det N | Det N PP | 'I'
VP -> V NP | VP PP
V -> 'shot' | 'killed' | 'wounded'
Det -> 'an' | 'my'
N -> 'elephant' | 'pajamas' | 'cat' | 'dog'
P -> 'in' | 'outside'
'''
parser = ChartParser(grammar)
gr = parser.grammar()
print ' '.join(produce(gr, gr.start(),3))
def make_sentence(corpus, term_rules, *args, **kwargs):
'''
Generate sentences with random structure and word choice
using a context-free grammar
The start point is taken from the sentence itself.
Parameters
----------
corpus : str
a string containing the full, cleaned corpus
term_rules : str
a string containing all the terminal rules for the corpus
maxdepth : int
The maximum allowed recursion depth before throwing a
ValueError
fixed_grammar : bool
Turn off the random sentence selection and used a fixed grammar
instead.
sample_sentence : str
When fixed_grammar is turned on, this is the sentence that will
be parsed. This can be finicky with grammars containing specially
punctuated constructions like quotations or positions
args[0] : dict()
Optional: a dictionary of kgrams and their subsequent words. If this
variable exists then cfgen will use this to pick the next words with
conditional weighting (The prescence of this argument turns on Markov
text generation features.)
Notes
-----
Add the ability to turn off the kgram parsing, ideally by counting
the number of unnamed arguments
----> Added this option
'''
markov_flag = (not len(args) == 0)
if markov_flag:
kgram_dict = args[0]
fixed_grammar = kwargs.pop('fixed_grammar', False)
sample_sentence = kwargs.pop('sample_sentence', '')
maxdepth = kwargs.pop('maxdepth', 25)
if fixed_grammar:
if sample_sentence == '':
warnings.warn('When using fixed_grammar, user should specify ' \
'the keyword argument "sample_sentence." Using a default simple sentence.')
sample_sentence = 'The cow jumped over the moon.'
else:
pass
flag = False
attempts = 0
while not flag and attempts < 30:
tokenizer = nltk.data.load('tokenizers/punkt/english.pickle')
if has_parser and not fixed_grammar:
rsent = choice(tokenizer.tokenize(corpus))
elif fixed_grammar:
rsent = sample_sentence
elif not has_parser and not fixed_grammar:
# select from a parsed corpus of pre-approved grammars
print("Usage library being built")
rsent = "The dog walked up the stairs slowly."
else:
print("Usage library being built")
rsent = "The dog walked up the stairs slowly."
parsed_syntax = parse_sentence(rsent)
# print(parsed_syntax)
cfg_str = term_rules + parsed_syntax
try:
startpt = parsed_syntax[:parsed_syntax.find(' ->')]
startpt = nltk.grammar.Nonterminal(startpt)
grammar = CFG.fromstring(cfg_str)
parser = ChartParser(grammar)
gr = parser.grammar()
if markov_flag:
out_txt = (' '.join(
produce_kgram(gr,
startpt,
kgram_dict,
maxdepth=maxdepth,
sent=[])))
else:
out_txt = (' '.join(produce(gr, startpt, maxdepth=maxdepth)))
flag = True
except ValueError:
warnings.warn(
'Badly formed sentence encountered, resampling the corpus.')
attempts = attempts + 1
# now re-tag special characters
swappairs = zip(replacements, to_replace)
for member in swappairs:
out_txt = out_txt.replace(member[0], member[1])
return out_txt
def make_sentence(self, do_markov=True, **kwargs):
'''
Generate sentences with random structure and word choice
using a context-free grammar
The start point is taken from the sentence itself.
Parameters
----------
do_markov : boolean that can be used to toggle the Markov
word selection on or off
maxdepth : int
The maximum allowed recursion depth before throwing a
ValueError
fixed_grammar : bool
Turn off the random sentence selection and used a fixed grammar
instead.
sample_sentence : str
When fixed_grammar is turned on, this is the sentence that will
be parsed. This can be finicky with grammars containing specially
punctuated constructions like quotations or positions
Notes
-----
Add the ability to turn off the kgram parsing, ideally by counting
the number of unnamed arguments
----> Added this option
'''
corpus = self.corpus
term_rules = self.term_rules
if (self.order > 0) and do_markov:
markov_flag = True
else:
markov_flag = False
fixed_grammar = kwargs.pop('fixed_grammar', False)
sample_sentence = kwargs.pop('sample_sentence', '')
maxdepth = kwargs.pop('maxdepth', 25)
if fixed_grammar:
if sample_sentence == '':
warnings.warn('When using fixed_grammar, user should specify ' \
'the keyword argument "sample_sentence." Using a default simple sentence.')
sample_sentence = 'The cow jumped over the moon.'
else:
pass
flag = False
attempts = 0
while not flag and attempts < 30:
tokenizer = nltk.data.load('tokenizers/punkt/english.pickle')
if has_parser and not fixed_grammar:
rsent = choice(tokenizer.tokenize(corpus))
elif fixed_grammar:
rsent = sample_sentence
elif not has_parser and not fixed_grammar:
# select from a parsed corpus of pre-approved grammars
warnings.warn(
"Usage library being built, falling back to simple sentence"
)
rsent = "The dog walked up the stairs slowly."
else:
warnings.warn(
"Usage library being built, falling back to simple sentence"
)
rsent = "The dog walked up the stairs slowly."
parsed_syntax = self.parse_sentence(rsent)
# print(parsed_syntax)
cfg_str = term_rules + parsed_syntax
try:
startpt = parsed_syntax[:parsed_syntax.find(' ->')]
startpt = nltk.grammar.Nonterminal(startpt)
grammar = CFG.fromstring(cfg_str)
parser = ChartParser(grammar)
gr = parser.grammar()
if markov_flag:
out_txt = (' '.join(
self.produce_kgram(gr,
startpt,
maxdepth=maxdepth,
sent=[])))
else:
out_txt = (' '.join(
self.produce(gr, startpt, maxdepth=maxdepth)))
flag = True
except ValueError:
warnings.warn(
'Badly formed sentence encountered, resampling the corpus.'
)
attempts += 1
# now re-tag special characters
swappairs = zip(replacements, to_replace)
for member in swappairs:
out_txt = out_txt.replace(member[0], member[1])
return out_txt
