class PadaosEngine(IntentEngine):
def __init__(self):
self.name = "padaos"
IntentEngine.__init__(self, self.name)
self.config = Configuration.get().get(self.name, {})
self.container = IntentContainer()
def add_intent(self, name, samples):
self.container.add_intent(name, samples)
def remove_intent(self, name):
self.container.remove_intent(name)
def add_entity(self, name, samples):
self.container.add_entity(name, samples)
def remove_entity(self, name):
self.container.remove_entity(name)
def train(self, single_thread=False):
""" train all registered intents and entities"""
# Padaos is simply regex, it handles this when registering
pass
def calc_intent(self, query):
""" return best intent for this query """
data = {"conf": 0, "utterance": query, "name": None}
data.update(self.container.calc_intent(query))
return data
class BasicTeacher(object):
"""
Poor-man's english connection extractor. Not even close to complete
"""
nlp = None
coref = None
def __init__(self, nlp=None, coref=None, use_nlp=False):
if use_nlp:
self.nlp = nlp or self.nlp or get_nlp()
self.coref = coref or self.coref
self.container = IntentContainer()
self.register_utterances()
def register_utterances(self):
self.container.add_intent('instance of',
['{source} (is|are|instance) {target}'])
self.container.add_intent('sample of',
['{source} is (sample|example) {target}'])
self.container.add_intent(
'incompatible',
['{source} (can not|is forbidden|is not allowed) {target}'])
self.container.add_intent('synonym',
['{source} is (same|synonym) {target}'])
self.container.add_intent('antonym',
['{source} is (opposite|antonym) {target}'])
self.container.add_intent('part of', [
'{source} is part {target}', '{target} is (composed|made) {source}'
])
self.container.add_intent('capable of',
['{source} (is capable|can) {target}'])
self.container.add_intent('created by',
['{source} is created {target}'])
self.container.add_intent('used for', ['{source} is used {target}'])
def normalize(self, text):
text = normalize(text, True, True, nlp=self.nlp, coref_nlp=self.coref)
# lets be aggressive to improve parsing
text = text.lower().replace("did you know that", "")
text = text.replace("example", "sample of")
words = text.split(" ")
removes = [
"a", "an", "of", "that", "this", "to", "with", "as", "by", "for"
]
replaces = {
"be": "is",
"are": "is",
"you": "self",
"was": "is",
"i": "user",
"were": "is"
}
for idx, word in enumerate(words):
if word in removes:
words[idx] = ""
if word in replaces:
words[idx] = replaces[word]
return " ".join([w for w in words if w])
def parse(self, utterance):
utterance = self.normalize(utterance)
match = self.container.calc_intent(utterance)
data = match["entities"]
data["normalized_text"] = utterance
data["connection_type"] = match["name"]
return data
class PadaosExtractor(IntentExtractor):
keyword_based = False
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
self.container = IntentContainer()
self.registered_intents = []
def detach_intent(self, intent_name):
if intent_name in self.registered_intents:
LOG.debug("Detaching padaous intent: " + intent_name)
self.container.remove_intent(intent_name)
self.registered_intents.remove(intent_name)
def detach_skill(self, skill_id):
LOG.debug("Detaching padaos skill: " + str(skill_id))
remove_list = [i for i in self.registered_intents if skill_id in i]
for i in remove_list:
self.detach_intent(i)
def register_entity(self, entity_name, samples=None):
samples = samples or [entity_name]
self.container.add_entity(entity_name, samples)
def register_intent(self, intent_name, samples=None):
samples = samples or [intent_name]
if intent_name not in self._intent_samples:
self._intent_samples[intent_name] = samples
else:
self._intent_samples[intent_name] += samples
self.container.add_intent(intent_name, samples)
self.registered_intents.append(intent_name)
def register_entity_from_file(self, entity_name, file_name):
with open(file_name) as f:
samples = f.read().split("\n")
self.register_entity(entity_name, samples)
def register_intent_from_file(self, intent_name, file_name):
with open(file_name) as f:
samples = f.read().split("\n")
self.register_intent(intent_name, samples)
def calc_intent(self, utterance, min_conf=0.5):
utterance = utterance.strip().lower()
intent = self.container.calc_intent(utterance)
if intent["name"]:
remainder = get_utterance_remainder(
utterance, samples=self._intent_samples[intent["name"]])
intent["intent_engine"] = "padaos"
intent["intent_type"] = intent.pop("name")
intent["utterance"] = utterance
intent["utterance_remainder"] = remainder
modifier = len(self.segmenter.segment(utterance))
intent["conf"] = 1 / modifier - 0.1
return intent
return {
'conf': 0,
'intent_type': 'unknown',
'entities': {},
'utterance': utterance,
'utterance_remainder': utterance,
'intent_engine': 'padaos'
}
def intent_scores(self, utterance):
utterance = utterance.strip().lower()
intents = []
bucket = self.calc_intents(utterance)
for utt in bucket:
intent = bucket[utt]
if not intent:
continue
intents.append(intent)
return intents
def calc_intents(self, utterance, min_conf=0.5):
utterance = utterance.strip().lower()
bucket = {}
for ut in self.segmenter.segment(utterance):
intent = self.calc_intent(ut)
bucket[ut] = intent
return bucket
def calc_intents_list(self, utterance):
utterance = utterance.strip().lower()
bucket = {}
for ut in self.segmenter.segment(utterance):
bucket[ut] = self.filter_intents(ut)
return bucket
def manifest(self):
# TODO vocab, skill ids, intent_data
return {"intent_names": self.registered_intents}
class TestIntentContainer:
def setup(self):
self.container = IntentContainer()
def test(self):
self.container.add_intent('hello',
['hello', 'hi', 'how are you', "what's up"])
self.container.add_intent('buy', [
'buy {item}', 'purchase {item}', 'get {item}', 'get {item} for me'
])
self.container.add_entity('item', ['milk', 'cheese'])
self.container.add_intent('drive', [
'drive me to {place}', 'take me to {place}', 'navigate to {place}'
])
self.container.add_intent(
'eat',
['eat {fruit}', 'eat some {fruit}', 'munch on (some|) {fruit}'])
self.container.compile()
assert self.container.calc_intent('hello')['name'] == 'hello'
assert not self.container.calc_intent('bye')['name']
assert self.container.calc_intent('buy milk') == {
'name': 'buy',
'entities': {
'item': 'milk'
}
}
assert self.container.calc_intent('eat some bananas') == {
'name': 'eat',
'entities': {
'fruit': 'bananas'
}
}
def test_case(self):
self.container.add_intent('test', ['Testing cAPitalizAtion'])
assert self.container.calc_intent(
'teStiNg CapitalIzation')['name'] == 'test'
def test_punctuation(self):
self.container.add_intent('test', ['Test! Of: Punctuation'])
assert self.container.calc_intent(
'test of !punctuation...')['name'] == 'test'
def test_spaces(self):
self.container.add_intent('test', ['this is a test'])
assert self.container.calc_intent('thisisatest')['name'] is None
self.container.add_intent('test2', ['this has(one|two)options'])
assert self.container.calc_intent(
'this has two options')['name'] == 'test2'
assert self.container.calc_intent('th is is a test')['name'] is None
self.container.add_intent('test3', ['I see {thing} (in|on) {place}'])
assert self.container.calc_intent('I see a bin test')['name'] is None
assert self.container.calc_intent('I see a bin in there') == {
'name': 'test3',
'entities': {
'thing': 'a bin',
'place': 'there'
}
}
class RegexQuestionParser(BasicQuestionParser):
"""
Dead Simple Regex intent parser
"""
def __init__(self, lang="en-us"):
super().__init__(lang)
self.container = IntentContainer()
self._intents = []
self.lang = lang
self.register_default_intents()
def normalize(self, text):
# pos parsing normalization
text = text.replace(" 's", "'s").replace("''", "").replace("``", "")
text = normalize(text)
text = text.lower()
words = text.split(" ")
questions = [
'what', 'when', 'where', 'why', 'how', 'which', 'whose', 'who'
]
removes = [
"a", "an", "of", "that", "this", "to", "with", "as", "by", "for",
"me", "do", "have", "does", "is", "your", "in", "i"
] + questions
replaces = {"are": "is", "was": "is", "were": "is"}
for idx, word in enumerate(words):
if word in replaces:
words[idx] = replaces[word]
if word in removes:
words[idx] = ""
return " ".join([w for w in words if w])
@property
def intents(self):
return self._intents
def register_intent(self, name, rules):
self._intents.append(name)
self.container.add_intent(name, rules)
def register_default_intents(self):
self.container.add_entity(
'question',
['what', 'when', 'where', 'why', 'how', 'which', 'whose', 'who'])
self.from_folder(join(RESOURCES_PATH, self.lang))
def from_folder(self, folder_path, reset=False):
assert isdir(folder_path)
if reset:
self.container = IntentContainer()
self._intents = []
for f in listdir(folder_path):
if f.endswith(".intent"):
intent = f.replace(".intent", "")
with open(join(folder_path, f)) as fi:
rules = fi.readlines()
rules = [
r.strip() for r in rules if r and not r.startswith("#")
]
self.register_intent(intent, rules)
def parse(self, utterance):
# normalization pre-parsing
data = super().parse(utterance)
utterance = normalize(str(utterance)).lower()
COMMON_STARTERS = ["on average", "about", "tell me", "approximately"]
for c in COMMON_STARTERS:
if utterance.startswith(c):
utterance = utterance.replace(c, "").strip()
utterance = " ".join(utterance.split(" "))
match = self.container.calc_intent(utterance)
if match.get("name"):
data["QuestionIntent"] = match["name"] or "unknown"
entities = match["entities"]
data.update(entities)
if "query" in data:
data["query"] = self.normalize(data["query"])
return data