06-ZDIAUI0-Systemy-dialogow.../nlu.py
2023-04-20 22:38:00 +02:00

50 lines
1.2 KiB
Python

import jsgf
from os import listdir
from os.path import isfile, join
gram_dir = './gramatyki/'
grammar_files = [file for file in listdir(gram_dir) if isfile(join(gram_dir, file))]
grammars = []
for grammarFile in grammar_files:
grammar = jsgf.parse_grammar_file(gram_dir + grammarFile)
grammars.append(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 = None
for _grammar in grammars:
matched = _grammar.find_matching_rules(utterance)
if matched:
break
if matched:
return get_dialog_act(matched[0])
else:
return {'act': 'null', 'slots': []}
print(nlu('chciałbym zamowic pizze vesuvio XXL na dwie osoby'))
print(nlu('na dowoz'))
print(nlu('dowoz'))