Generic_DialogSystem/example_nlu.py
2023-05-04 17:30:47 +02:00

53 lines
1.2 KiB
Python

import jsgf
from pathlib import Path
import os
__location__ = Path().resolve()
book_grammar = jsgf.parse_grammar_file(os.path.join(__location__, "grammar3.jsgf"))
book_grammar
def get_dialog_act(rule):
slots = []
get_slots(rule.expansion, slots)
return {'act': rule.grammar.name, 'slots': slots}
def get_slots(expansion, slots):
if expansion.tag != '':
slots.append((expansion.tag, expansion.current_match))
return
for child in expansion.children:
get_slots(child, slots)
if not expansion.children and isinstance(expansion, jsgf.NamedRuleRef):
get_slots(expansion.referenced_rule.expansion, slots)
def nlu(utterance):
matched = book_grammar.find_matching_rules(utterance)
if matched:
return get_dialog_act(matched[0])
else:
return {'act': 'null', 'slots': []}
def predict(utterance):
utterance = utterance.lower()
punctuation = '''!;:/?,.'''
for i in utterance:
if i in punctuation:
utterance = utterance.replace(i, "")
matched = book_grammar.find_matching_rules(utterance)
nlu(utterance)
try:
print(get_dialog_act(matched[0]))
except:
pass
return matched