class StateTracker(object):
def __init__(self, data_dir, config):
self.time_step = 0
self.cfg = config
self.db = DBQuery(data_dir, config)
self.topic = ''
self.evaluator = MultiWozEvaluator(data_dir)
self.lock_evalutor = False
def set_rollout(self, rollout):
if rollout:
self.save_time_step = self.time_step
self.save_topic = self.topic
self.lock_evalutor = True
else:
self.time_step = self.save_time_step
self.save_topic = self.topic
self.lock_evalutor = False
def get_entities(self, s, domain):
origin = s['belief_state'][domain].items()
constraint = []
for k, v in origin:
if v != '?' and k in self.cfg.mapping[domain]:
constraint.append((self.cfg.mapping[domain][k], v))
entities = self.db.query(domain, constraint)
random.shuffle(entities)
return entities
def update_belief_sys(self, old_s, a):
"""
update belief/goal state with sys action
"""
s = deepcopy(old_s)
a_index = torch.nonzero(a) # get multiple da indices
self.time_step += 1
s['others']['turn'] = self.time_step
# update sys/user dialog act
s['sys_action'] = dict()
# update belief part
das = [self.cfg.idx2da[idx.item()] for idx in a_index]
das = [da.split('-') for da in das]
sorted(das, key=lambda x: x[0]) # sort by domain
entities = [] if self.topic == '' else self.get_entities(s, self.topic)
return_flag = False
for domain, intent, slot, p in das:
if domain in self.cfg.belief_domains and domain != self.topic:
self.topic = domain
entities = self.get_entities(s, domain)
da = '-'.join((domain, intent, slot, p))
if intent == 'request':
s['sys_action'][da] = '?'
elif intent in ['nooffer', 'nobook'] and self.topic != '':
return_flag = True
if slot in s['belief_state'][self.topic] and s['belief_state'][
self.topic][slot] != '?':
s['sys_action'][da] = s['belief_state'][self.topic][slot]
else:
s['sys_action'][da] = 'none'
elif slot == 'choice':
s['sys_action'][da] = str(len(entities))
elif slot == 'none':
s['sys_action'][da] = 'none'
else:
num = int(p) - 1
if self.topic and len(
entities) > num and slot in self.cfg.mapping[
self.topic]:
typ = self.cfg.mapping[self.topic][slot]
if typ in entities[num]:
s['sys_action'][da] = entities[num][typ]
else:
s['sys_action'][da] = 'none'
else:
s['sys_action'][da] = 'none'
if not self.topic:
continue
if intent in [
'inform', 'recommend', 'offerbook', 'offerbooked',
'book'
]:
discard(s['belief_state'][self.topic], slot, '?')
if slot in s['user_goal'][self.topic] and s['user_goal'][
self.topic][slot] == '?':
s['goal_state'][self.topic][slot] = s['sys_action'][da]
# booked
if intent == 'inform' and slot == 'car': # taxi
if 'booked' not in s['belief_state']['taxi']:
s['belief_state']['taxi']['booked'] = 'taxi-booked'
elif intent in ['offerbooked', 'book'
] and slot == 'ref': # train
if self.topic in ['taxi', 'hospital', 'police']:
s['belief_state'][
self.topic]['booked'] = f'{self.topic}-booked'
s['sys_action'][da] = f'{self.topic}-booked'
elif entities:
book_domain = entities[0]['ref'].split('-')[0]
if 'booked' not in s['belief_state'][
book_domain] and entities:
s['belief_state'][book_domain][
'booked'] = entities[0]['ref']
s['sys_action'][da] = entities[0]['ref']
if return_flag:
for da in s['user_action']:
d_usr, i_usr, s_usr = da.split('-')
if i_usr == 'inform' and d_usr == self.topic:
discard(s['belief_state'][d_usr], s_usr)
reload(s['goal_state'], s['user_goal'], self.topic)
if not self.lock_evalutor:
self.evaluator.add_sys_da(s['sys_action'])
return s
def update_belief_usr(self, old_s, a):
"""
update belief/goal state with user action
"""
s = deepcopy(old_s)
a_index = torch.nonzero(a) # get multiple da indices
self.time_step += 1
s['others']['turn'] = self.time_step
s['others']['terminal'] = 1 if (self.cfg.a_dim_usr -
1) in a_index else 0
# update sys/user dialog act
s['user_action'] = dict()
# update belief part
das = [
self.cfg.idx2da_u[idx.item()] for idx in a_index
if idx.item() != self.cfg.a_dim_usr - 1
]
das = [da.split('-') for da in das]
if s['invisible_domains']:
for da in das:
if da[0] == s['next_available_domain']:
s['next_available_domain'] = s['invisible_domains'][0]
s['invisible_domains'].remove(s['next_available_domain'])
break
sorted(das, key=lambda x: x[0]) # sort by domain
for domain, intent, slot in das:
if domain in self.cfg.belief_domains and domain != self.topic:
self.topic = domain
da = '-'.join((domain, intent, slot))
if intent == 'request':
s['user_action'][da] = '?'
s['belief_state'][self.topic][slot] = '?'
elif slot == 'none':
s['user_action'][da] = 'none'
else:
if self.topic and slot in s['user_goal'][
self.topic] and s['user_goal'][domain][slot] != '?':
s['user_action'][da] = s['user_goal'][domain][slot]
else:
s['user_action'][da] = 'dont care'
if not self.topic:
continue
if intent == 'inform':
s['belief_state'][domain][slot] = s['user_action'][da]
if slot in s['user_goal'][self.topic] and s['user_goal'][
self.topic][slot] != '?':
discard(s['goal_state'][self.topic], slot)
if not self.lock_evalutor:
self.evaluator.add_usr_da(s['user_action'])
return s
def reset(self, random_seed=None):
"""
Args:
random_seed (int):
Returns:
init_state (dict):
"""
pass
def step(self, s, sys_a):
"""
Args:
s (dict):
sys_a (vector):
Returns:
next_s (dict):
terminal (bool):
"""
pass
class GoalGenerator:
"""User goal generator"""
def __init__(self, data_dir,
goal_model_path,
corpus_path=None,
boldify=False):
"""
Args:
goal_model_path: path to a goal model
corpus_path: path to a dialog corpus to build a goal model
"""
self.dbquery = DBQuery(data_dir)
self.goal_model_path = data_dir + '/' + goal_model_path
self.corpus_path = data_dir + '/' + corpus_path if corpus_path is not None else None
self.boldify = do_boldify if boldify else null_boldify
if os.path.exists(self.goal_model_path):
with open(self.goal_model_path, 'rb') as f:
self.ind_slot_dist, self.ind_slot_value_dist, self.domain_ordering_dist, self.book_dist = pickle.load(f)
logging.info('Loading goal model is done')
else:
self._build_goal_model()
logging.info('Building goal model is done')
# remove some slot
del self.ind_slot_dist['police']['reqt']['postcode']
del self.ind_slot_value_dist['police']['reqt']['postcode']
del self.ind_slot_dist['hospital']['reqt']['postcode']
del self.ind_slot_value_dist['hospital']['reqt']['postcode']
del self.ind_slot_dist['hospital']['reqt']['address']
del self.ind_slot_value_dist['hospital']['reqt']['address']
def _build_goal_model(self):
with open(self.corpus_path) as f:
dialogs = json.load(f)
# domain ordering
def _get_dialog_domains(dialog):
return list(filter(lambda x: x in domains and len(dialog['goal'][x]) > 0, dialog['goal']))
domain_orderings = []
for d in dialogs:
d_domains = _get_dialog_domains(dialogs[d])
first_index = []
for domain in d_domains:
message = [dialogs[d]['goal']['message']] if type(dialogs[d]['goal']['message']) == str else \
dialogs[d]['goal']['message']
for i, m in enumerate(message):
if domain_keywords[domain].lower() in m.lower() or domain.lower() in m.lower():
first_index.append(i)
break
domain_orderings.append(tuple(map(lambda x: x[1], sorted(zip(first_index, d_domains), key=lambda x: x[0]))))
domain_ordering_cnt = Counter(domain_orderings)
self.domain_ordering_dist = deepcopy(domain_ordering_cnt)
for order in domain_ordering_cnt.keys():
self.domain_ordering_dist[order] = domain_ordering_cnt[order] / sum(domain_ordering_cnt.values())
# independent goal slot distribution
ind_slot_value_cnt = dict([(domain, {}) for domain in domains])
domain_cnt = Counter()
book_cnt = Counter()
for d in dialogs:
for domain in domains:
if dialogs[d]['goal'][domain] != {}:
domain_cnt[domain] += 1
if 'info' in dialogs[d]['goal'][domain]:
for slot in dialogs[d]['goal'][domain]['info']:
if 'invalid' in slot:
continue
if 'info' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['info'] = {}
if slot not in ind_slot_value_cnt[domain]['info']:
ind_slot_value_cnt[domain]['info'][slot] = Counter()
if 'care' in dialogs[d]['goal'][domain]['info'][slot]:
continue
ind_slot_value_cnt[domain]['info'][slot][dialogs[d]['goal'][domain]['info'][slot]] += 1
if 'reqt' in dialogs[d]['goal'][domain]:
for slot in dialogs[d]['goal'][domain]['reqt']:
if 'reqt' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['reqt'] = Counter()
ind_slot_value_cnt[domain]['reqt'][slot] += 1
if 'book' in dialogs[d]['goal'][domain]:
book_cnt[domain] += 1
for slot in dialogs[d]['goal'][domain]['book']:
if 'invalid' in slot:
continue
if 'book' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['book'] = {}
if slot not in ind_slot_value_cnt[domain]['book']:
ind_slot_value_cnt[domain]['book'][slot] = Counter()
if 'care' in dialogs[d]['goal'][domain]['book'][slot]:
continue
ind_slot_value_cnt[domain]['book'][slot][dialogs[d]['goal'][domain]['book'][slot]] += 1
self.ind_slot_value_dist = deepcopy(ind_slot_value_cnt)
self.ind_slot_dist = dict([(domain, {}) for domain in domains])
self.book_dist = {}
for domain in domains:
if 'info' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['info']:
if 'info' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['info'] = {}
if slot not in self.ind_slot_dist[domain]['info']:
self.ind_slot_dist[domain]['info'][slot] = {}
self.ind_slot_dist[domain]['info'][slot] = sum(ind_slot_value_cnt[domain]['info'][slot].values()) / \
domain_cnt[domain]
slot_total = sum(ind_slot_value_cnt[domain]['info'][slot].values())
for val in self.ind_slot_value_dist[domain]['info'][slot]:
self.ind_slot_value_dist[domain]['info'][slot][val] = ind_slot_value_cnt[domain]['info'][slot][
val] / slot_total
if 'reqt' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['reqt']:
if 'reqt' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['reqt'] = {}
self.ind_slot_dist[domain]['reqt'][slot] = ind_slot_value_cnt[domain]['reqt'][slot] / domain_cnt[
domain]
self.ind_slot_value_dist[domain]['reqt'][slot] = ind_slot_value_cnt[domain]['reqt'][slot] / \
domain_cnt[domain]
if 'book' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['book']:
if 'book' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['book'] = {}
if slot not in self.ind_slot_dist[domain]['book']:
self.ind_slot_dist[domain]['book'][slot] = {}
self.ind_slot_dist[domain]['book'][slot] = sum(ind_slot_value_cnt[domain]['book'][slot].values()) / \
domain_cnt[domain]
slot_total = sum(ind_slot_value_cnt[domain]['book'][slot].values())
for val in self.ind_slot_value_dist[domain]['book'][slot]:
self.ind_slot_value_dist[domain]['book'][slot][val] = ind_slot_value_cnt[domain]['book'][slot][
val] / slot_total
self.book_dist[domain] = book_cnt[domain] / len(dialogs)
with open(self.goal_model_path, 'wb') as f:
pickle.dump((self.ind_slot_dist, self.ind_slot_value_dist, self.domain_ordering_dist, self.book_dist), f)
def _get_domain_goal(self, domain):
cnt_slot = self.ind_slot_dist[domain]
cnt_slot_value = self.ind_slot_value_dist[domain]
pro_book = self.book_dist[domain]
while True:
# domain_goal = defaultdict(lambda: {})
# domain_goal = {'info': {}, 'fail_info': {}, 'reqt': {}, 'book': {}, 'fail_book': {}}
domain_goal = {'info': {}}
# inform
if 'info' in cnt_slot:
for slot in cnt_slot['info']:
if random.random() < cnt_slot['info'][slot] + pro_correction['info']:
domain_goal['info'][slot] = nomial_sample(cnt_slot_value['info'][slot])
if domain in ['hotel', 'restaurant', 'attraction'] and 'name' in domain_goal['info'] and len(
domain_goal['info']) > 1:
if random.random() < cnt_slot['info']['name']:
domain_goal['info'] = {'name': domain_goal['info']['name']}
else:
del domain_goal['info']['name']
if domain in ['taxi', 'train'] and 'arriveBy' in domain_goal['info'] and 'leaveAt' in domain_goal[
'info']:
if random.random() < (
cnt_slot['info']['leaveAt'] / (cnt_slot['info']['arriveBy'] + cnt_slot['info']['leaveAt'])):
del domain_goal['info']['arriveBy']
else:
del domain_goal['info']['leaveAt']
if domain in ['taxi', 'train'] and 'arriveBy' not in domain_goal['info'] and 'leaveAt' not in \
domain_goal['info']:
if random.random() < (cnt_slot['info']['arriveBy'] / (
cnt_slot['info']['arriveBy'] + cnt_slot['info']['leaveAt'])):
domain_goal['info']['arriveBy'] = nomial_sample(cnt_slot_value['info']['arriveBy'])
else:
domain_goal['info']['leaveAt'] = nomial_sample(cnt_slot_value['info']['leaveAt'])
if domain in ['taxi', 'train'] and 'departure' not in domain_goal['info']:
domain_goal['info']['departure'] = nomial_sample(cnt_slot_value['info']['departure'])
if domain in ['taxi', 'train'] and 'destination' not in domain_goal['info']:
domain_goal['info']['destination'] = nomial_sample(cnt_slot_value['info']['destination'])
if domain in ['taxi', 'train'] and \
'departure' in domain_goal['info'] and \
'destination' in domain_goal['info'] and \
domain_goal['info']['departure'] == domain_goal['info']['destination']:
if random.random() < (cnt_slot['info']['departure'] / (
cnt_slot['info']['departure'] + cnt_slot['info']['destination'])):
domain_goal['info']['departure'] = nomial_sample(cnt_slot_value['info']['departure'])
else:
domain_goal['info']['destination'] = nomial_sample(cnt_slot_value['info']['destination'])
if domain_goal['info'] == {}:
continue
# request
if 'reqt' in cnt_slot:
reqt = [slot for slot in cnt_slot['reqt']
if random.random() < cnt_slot['reqt'][slot] + pro_correction['reqt'] and slot not in
domain_goal['info']]
if len(reqt) > 0:
domain_goal['reqt'] = reqt
# book
if 'book' in cnt_slot and random.random() < pro_book + pro_correction['book']:
if 'book' not in domain_goal:
domain_goal['book'] = {}
for slot in cnt_slot['book']:
if random.random() < cnt_slot['book'][slot] + pro_correction['book']:
domain_goal['book'][slot] = nomial_sample(cnt_slot_value['book'][slot])
# makes sure that there are all necessary slots for booking
if domain == 'restaurant' and 'time' not in domain_goal['book']:
domain_goal['book']['time'] = nomial_sample(cnt_slot_value['book']['time'])
if domain == 'hotel' and 'stay' not in domain_goal['book']:
domain_goal['book']['stay'] = nomial_sample(cnt_slot_value['book']['stay'])
if domain in ['hotel', 'restaurant'] and 'day' not in domain_goal['book']:
domain_goal['book']['day'] = nomial_sample(cnt_slot_value['book']['day'])
if domain in ['hotel', 'restaurant'] and 'people' not in domain_goal['book']:
domain_goal['book']['people'] = nomial_sample(cnt_slot_value['book']['people'])
if domain == 'train' and len(domain_goal['book']) <= 0:
domain_goal['book']['people'] = nomial_sample(cnt_slot_value['book']['people'])
# fail_book
if 'book' in domain_goal and random.random() < 0.5:
if domain == 'hotel':
domain_goal['fail_book'] = deepcopy(domain_goal['book'])
if 'stay' in domain_goal['book'] and random.random() < 0.5:
# increase hotel-stay
domain_goal['fail_book']['stay'] = str(int(domain_goal['book']['stay']) + 1)
elif 'day' in domain_goal['book']:
# push back hotel-day by a day
domain_goal['fail_book']['day'] = days[(days.index(domain_goal['book']['day']) - 1) % 7]
elif domain == 'restaurant':
domain_goal['fail_book'] = deepcopy(domain_goal['book'])
if 'time' in domain_goal['book'] and random.random() < 0.5:
hour, minute = domain_goal['book']['time'].split(':')
domain_goal['fail_book']['time'] = str((int(hour) + 1) % 24) + ':' + minute
elif 'day' in domain_goal['book']:
if random.random() < 0.5:
domain_goal['fail_book']['day'] = days[(days.index(domain_goal['book']['day']) - 1) % 7]
else:
domain_goal['fail_book']['day'] = days[(days.index(domain_goal['book']['day']) + 1) % 7]
# fail_info
if 'info' in domain_goal and len(self.dbquery.query(domain, domain_goal['info'].items())) == 0:
num_trial = 0
while num_trial < 100:
adjusted_info = self._adjust_info(domain, domain_goal['info'])
if len(self.dbquery.query(domain, adjusted_info.items())) > 0:
if domain == 'train':
domain_goal['info'] = adjusted_info
else:
domain_goal['fail_info'] = domain_goal['info']
domain_goal['info'] = adjusted_info
break
num_trial += 1
if num_trial >= 100:
continue
# at least there is one request and book
if 'reqt' in domain_goal or 'book' in domain_goal:
break
return domain_goal
def get_user_goal(self, seed=None):
# seed the generator to get fixed goal
if seed is not None:
random.seed(seed)
np.random.seed(seed)
domain_ordering = ()
while len(domain_ordering) <= 0:
domain_ordering = nomial_sample(self.domain_ordering_dist)
#domain_ordering = ('attraction', 'restaurant', 'taxi')
user_goal = {dom: self._get_domain_goal(dom) for dom in domain_ordering}
assert len(user_goal.keys()) > 0
# using taxi to communte between places, removing destination and departure.
if 'taxi' in domain_ordering:
places = [dom for dom in domain_ordering[: domain_ordering.index('taxi')] if 'address' in self.ind_slot_dist[dom]['reqt'].keys()]
if len(places) >= 1:
del user_goal['taxi']['info']['destination']
user_goal[places[-1]]['reqt'] = list(set(user_goal[places[-1]].get('reqt', [])).union({'address'}))
if places[-1] == 'restaurant' and 'book' in user_goal['restaurant']:
user_goal['taxi']['info']['arriveBy'] = user_goal['restaurant']['book']['time']
if 'leaveAt' in user_goal['taxi']['info']:
del user_goal['taxi']['info']['leaveAt']
if len(places) >= 2:
del user_goal['taxi']['info']['departure']
user_goal[places[-2]]['reqt'] = list(set(user_goal[places[-2]].get('reqt', [])).union({'address'}))
# match area of attraction and restaurant
if 'restaurant' in domain_ordering and \
'attraction' in domain_ordering and \
'fail_info' not in user_goal['restaurant'] and \
domain_ordering.index('restaurant') > domain_ordering.index('attraction') and \
'area' in user_goal['restaurant']['info'] and 'area' in user_goal['attraction']['info']:
adjusted_restaurant_goal = deepcopy(user_goal['restaurant']['info'])
adjusted_restaurant_goal['area'] = user_goal['attraction']['info']['area']
if len(self.dbquery.query('restaurant', adjusted_restaurant_goal.items())) > 0 and random.random() < 0.5:
user_goal['restaurant']['info']['area'] = user_goal['attraction']['info']['area']
# match day and people of restaurant and hotel
if 'restaurant' in domain_ordering and 'hotel' in domain_ordering and \
'book' in user_goal['restaurant'] and 'book' in user_goal['hotel']:
if random.random() < 0.5:
user_goal['restaurant']['book']['people'] = user_goal['hotel']['book']['people']
if 'fail_book' in user_goal['restaurant']:
user_goal['restaurant']['fail_book']['people'] = user_goal['hotel']['book']['people']
if random.random() < 1.0:
user_goal['restaurant']['book']['day'] = user_goal['hotel']['book']['day']
if 'fail_book' in user_goal['restaurant']:
user_goal['restaurant']['fail_book']['day'] = user_goal['hotel']['book']['day']
if user_goal['restaurant']['book']['day'] == user_goal['restaurant']['fail_book']['day'] and \
user_goal['restaurant']['book']['time'] == user_goal['restaurant']['fail_book']['time'] and \
user_goal['restaurant']['book']['people'] == user_goal['restaurant']['fail_book']['people']:
del user_goal['restaurant']['fail_book']
# match day and people of hotel and train
if 'hotel' in domain_ordering and 'train' in domain_ordering and \
'book' in user_goal['hotel'] and 'info' in user_goal['train']:
if user_goal['train']['info']['destination'] == 'cambridge' and \
'day' in user_goal['hotel']['book']:
user_goal['train']['info']['day'] = user_goal['hotel']['book']['day']
elif user_goal['train']['info']['departure'] == 'cambridge' and \
'day' in user_goal['hotel']['book'] and 'stay' in user_goal['hotel']['book']:
user_goal['train']['info']['day'] = days[
(days.index(user_goal['hotel']['book']['day']) + int(
user_goal['hotel']['book']['stay'])) % 7]
# In case, we have no query results with adjusted train goal, we simply drop the train goal.
if len(self.dbquery.query('train', user_goal['train']['info'].items())) == 0:
del user_goal['train']
domain_ordering = tuple(list(domain_ordering).remove('train'))
user_goal['domain_ordering'] = domain_ordering
return user_goal
def _adjust_info(self, domain, info):
# adjust one of the slots of the info
adjusted_info = deepcopy(info)
slot = random.choice(list(info.keys()))
adjusted_info[slot] = random.choice(list(self.ind_slot_value_dist[domain]['info'][slot].keys()))
return adjusted_info
def build_message(self, user_goal, boldify=null_boldify):
message = []
state = deepcopy(user_goal)
for dom in user_goal['domain_ordering']:
state = deepcopy(user_goal[dom])
if not (dom == 'taxi' and len(state['info']) == 1):
# intro
m = [templates[dom]['intro']]
# info
def fill_info_template(user_goal, domain, slot, info):
if slot != 'area' or not ('restaurant' in user_goal and
'attraction' in user_goal and
info in user_goal['restaurant'].keys() and
info in user_goal['attraction'].keys() and
'area' in user_goal['restaurant'][info] and
'area' in user_goal['attraction'][info] and
user_goal['restaurant'][info]['area'] == user_goal['attraction'][info]['area']):
return templates[domain][slot].format(self.boldify(user_goal[domain][info][slot]))
else:
restaurant_index = user_goal['domain_ordering'].index('restaurant')
attraction_index = user_goal['domain_ordering'].index('attraction')
if restaurant_index > attraction_index and domain == 'restaurant':
return templates[domain][slot].format(self.boldify('same area as the attraction'))
elif attraction_index > restaurant_index and domain == 'attraction':
return templates[domain][slot].format(self.boldify('same area as the restaurant'))
return templates[domain][slot].format(self.boldify(user_goal[domain][info][slot]))
info = 'info'
if 'fail_info' in user_goal[dom]:
info = 'fail_info'
if dom == 'taxi' and len(state[info]) == 1:
taxi_index = user_goal['domain_ordering'].index('taxi')
places = [dom for dom in user_goal['domain_ordering'][: taxi_index] if
dom in ['attraction', 'hotel', 'restaurant']]
if len(places) >= 2:
random.shuffle(places)
m.append(templates['taxi']['commute'])
if 'arriveBy' in state[info]:
m.append('The taxi should arrive at the {} from the {} by {}.'.format(self.boldify(places[0]),
self.boldify(places[1]),
self.boldify(state[info]['arriveBy'])))
elif 'leaveAt' in state[info]:
m.append('The taxi should leave from the {} to the {} after {}.'.format(self.boldify(places[0]),
self.boldify(places[1]),
self.boldify(state[info]['leaveAt'])))
message.append(' '.join(m))
else:
while len(state[info]) > 0:
num_acts = random.randint(1, min(len(state[info]), 3))
slots = random.sample(list(state[info].keys()), num_acts)
sents = [fill_info_template(user_goal, dom, slot, info) for slot in slots if slot not in ['parking', 'internet']]
if 'parking' in slots:
sents.append(templates[dom]['parking ' + state[info]['parking']])
if 'internet' in slots:
sents.append(templates[dom]['internet ' + state[info]['internet']])
m.extend(sents)
message.append(' '.join(m))
m = []
for slot in slots:
del state[info][slot]
# fail_info
if 'fail_info' in user_goal[dom]:
# if 'fail_info' in user_goal[dom]:
adjusted_slot = list(filter(lambda x: x[0][1] != x[1][1],
zip(user_goal[dom]['info'].items(), user_goal[dom]['fail_info'].items())))[0][0][0]
if adjusted_slot in ['internet', 'parking']:
message.append(templates[dom]['fail_info ' + adjusted_slot + ' ' + user_goal[dom]['info'][adjusted_slot]])
else:
message.append(templates[dom]['fail_info ' + adjusted_slot].format(self.boldify(user_goal[dom]['info'][adjusted_slot])))
# reqt
if 'reqt' in state:
slot_strings = []
for slot in state['reqt']:
if slot in ['internet', 'parking', 'food']:
continue
slot_strings.append(slot if slot not in request_slot_string_map else request_slot_string_map[slot])
if len(slot_strings) > 0:
message.append(templates[dom]['request'].format(self.boldify(', '.join(slot_strings))))
if 'internet' in state['reqt']:
message.append('Make sure to ask if the hotel includes free wifi.')
if 'parking' in state['reqt']:
message.append('Make sure to ask if the hotel includes free parking.')
if 'food' in state['reqt']:
message.append('Make sure to ask about what food it serves.')
def get_same_people_domain(user_goal, domain, slot):
if slot not in ['day', 'people']:
return None
domain_index = user_goal['domain_ordering'].index(domain)
previous_domains = user_goal['domain_ordering'][:domain_index]
for prev in previous_domains:
if prev in ['restaurant', 'hotel', 'train'] and 'book' in user_goal[prev] and \
slot in user_goal[prev]['book'] and user_goal[prev]['book'][slot] == \
user_goal[domain]['book'][slot]:
return prev
return None
# book
book = 'book'
if 'fail_book' in user_goal[dom]:
book = 'fail_book'
if 'book' in state:
slot_strings = []
for slot in ['people', 'time', 'day', 'stay']:
if slot in state[book]:
if slot == 'people':
same_people_domain = get_same_people_domain(user_goal, dom, slot)
if same_people_domain is None:
slot_strings.append('for {} people'.format(self.boldify(state[book][slot])))
else:
slot_strings.append(self.boldify(
'for the same group of people as the {} booking'.format(same_people_domain)))
elif slot == 'time':
slot_strings.append('at {}'.format(self.boldify(state[book][slot])))
elif slot == 'day':
same_people_domain = get_same_people_domain(user_goal, dom, slot)
if same_people_domain is None:
slot_strings.append('on {}'.format(self.boldify(state[book][slot])))
else:
slot_strings.append(
self.boldify('on the same day as the {} booking'.format(same_people_domain)))
elif slot == 'stay':
slot_strings.append('for {} nights'.format(self.boldify(state[book][slot])))
del state[book][slot]
assert len(state[book]) <= 0, state[book]
if len(slot_strings) > 0:
message.append(templates[dom]['book'].format(' '.join(slot_strings)))
# fail_book
if 'fail_book' in user_goal[dom]:
adjusted_slot = list(filter(lambda x: x[0][1] != x[1][1], zip(user_goal[dom]['book'].items(),
user_goal[dom]['fail_book'].items())))[0][0][0]
if adjusted_slot in ['internet', 'parking']:
message.append(
templates[dom]['fail_book ' + adjusted_slot + ' ' + user_goal[dom]['book'][adjusted_slot]])
else:
message.append(templates[dom]['fail_book ' + adjusted_slot].format(
self.boldify(user_goal[dom]['book'][adjusted_slot])))
if boldify == do_boldify:
for i, m in enumerate(message):
message[i] = message[i].replace('wifi', "<b>wifi</b>")
message[i] = message[i].replace('internet', "<b>internet</b>")
message[i] = message[i].replace('parking', "<b>parking</b>")
return message
class StateTracker(object):
def __init__(self, data_dir, config):
self.time_step = 0
self.cfg = config
self.db = DBQuery(data_dir)
self.topic = 'NONE'
def _action_to_dict(self, das):
da_dict = {}
for da, value in das.items():
domain, intent, slot, p = da.split('-')
domint = '-'.join((domain, intent))
if domint not in da_dict:
da_dict[domint] = []
da_dict[domint].append([slot, value])
return da_dict
def _dict_to_vec(self, das):
da_vector = torch.zeros(self.cfg.a_dim_usr, dtype=torch.int32)
expand_da(das)
for domint in das:
pairs = das[domint]
for slot, p, value in pairs:
da = '-'.join((domint, slot, p)).lower()
if da in self.cfg.dau2idx:
idx = self.cfg.dau2idx[da]
da_vector[idx] = 1
return da_vector
def _mask_user_goal(self, goal):
domain_ordering = list(goal['domain_ordering'])
if 'hospital' in goal:
del (goal['hospital'])
domain_ordering.remove('hospital')
if 'police' in goal:
del (goal['police'])
domain_ordering.remove('police')
goal['domain_ordering'] = tuple(domain_ordering)
def get_entities(self, s, domain):
origin = s['belief_state']['inform'][domain].items()
constraint = []
for k, v in origin:
if k in self.cfg.mapping[domain]:
constraint.append((self.cfg.mapping[domain][k], v))
entities = self.db.query(domain, constraint)
random.shuffle(entities)
return entities
def update_belief_sys(self, old_s, a):
"""
update belief state with sys action
"""
s = deepcopy(old_s)
a_index = torch.nonzero(a) # get multiple da indices
self.time_step += 1
s['others']['turn'] = self.time_step
# update sys/user dialog act
s['history']['sys'] = dict(s['history']['sys'], **s['last_sys_action'])
del (s['last_sys_action'])
s['last_user_action'] = s['user_action']
s['user_action'] = dict()
# update belief part
das = [self.cfg.idx2da[idx.item()] for idx in a_index]
das = [da.split('-') for da in das]
sorted(das, key=lambda x: x[0]) # sort by domain
entities = [] if self.topic == 'NONE' else self.get_entities(
s, self.topic)
for domain, intent, slot, p in das:
_domain = self.topic if domain == 'booking' else domain
if domain in self.cfg.belief_domains and domain != self.topic:
self.topic = domain
entities = self.get_entities(s, domain)
da = '-'.join((domain, intent, slot, p))
if p == 'none':
s['sys_action'][da] = 'none'
elif p == '?':
s['sys_action'][da] = '?'
elif intent in ['nooffer', 'nobook']:
if slot in s['belief_state']['inform'][_domain]:
s['sys_action'][da] = s['belief_state']['inform'][_domain][
slot]
else:
s['sys_action'][da] = 'none'
elif slot == 'choice':
s['sys_action'][da] = str(len(entities))
else:
num = int(p) - 1
if len(entities) > num and slot in self.cfg.mapping[_domain]:
typ = self.cfg.mapping[_domain][slot]
s['sys_action'][da] = entities[num][typ]
else:
s['sys_action'][da] = 'none'
if intent == 'inform' and _domain != 'NONE':
s['belief_state']['request'][_domain].discard(slot)
# booked
if intent == 'inform' and slot == 'car': # taxi
if not s['belief_state']['booked']['taxi']:
s['belief_state']['booked']['taxi'] == 'booked'
elif intent == 'offerbooked' and slot == 'ref': # train
s['belief_state']['request']['train'].discard('ref')
if not s['belief_state']['booked']['train'] and entities:
s['belief_state']['booked']['train'] = entities[0]['ref']
elif intent == 'book' and slot == 'ref': # attraction, hotel, restaurant
if _domain not in ['attraction', 'hotel', 'restaurant']:
continue
s['belief_state']['request'][_domain].discard('ref')
if not s['belief_state']['booked'][_domain] and entities:
# save entity id
s['belief_state']['booked'][_domain] = entities[0]['ref']
return s
def update_belief_usr(self, old_s, a, terminal):
"""
update belief state with user action
"""
s = deepcopy(old_s)
a_index = torch.nonzero(a) # get multiple da indices
self.time_step += 1
s['others']['turn'] = self.time_step
s['others']['terminal'] = terminal
# update sys/user dialog act
s['history']['user'] = dict(s['history']['user'],
**s['last_user_action'])
del (s['last_user_action'])
s['last_sys_action'] = s['sys_action']
s['sys_action'] = dict()
# update belief part
das = [self.cfg.idx2dau[idx.item()] for idx in a_index]
das = [da.split('-') for da in das]
sorted(das, key=lambda x: x[0]) # sort by domain
for domain, intent, slot, p in das:
if domain in self.cfg.belief_domains and domain != self.topic:
self.topic = domain
da = '-'.join((domain, intent, slot, p))
if p == 'none':
s['user_action'][da] = 'none'
elif p == '?':
s['user_action'][da] = '?'
else:
if slot in s['user_goal']['inform'][domain]:
s['user_action'][da] = s['user_goal']['inform'][domain][
slot]
else:
s['user_action'][da] = 'none'
if slot != 'none':
if intent == 'inform':
# update constraints with reasonable value according to user goal
if slot in s['user_goal']['inform'][domain]:
s['belief_state']['inform'][domain][slot] = s[
'user_goal']['inform'][domain][slot] # value
else:
s['belief_state']['inform'][domain][slot] = 'none'
elif intent == 'request':
s['belief_state']['request'][domain].add(slot)
return s
def reset(self, random_seed=None):
"""
Args:
random_seed (int):
Returns:
init_state (dict):
"""
pass
def step(self, s, sys_a):
"""
Args:
s (dict):
sys_a (vector):
Returns:
next_s (dict):
terminal (bool):
"""
pass
class GoalGenerator:
"""User goal generator"""
def __init__(self,
data_dir,
cfg,
goal_model_path,
corpus_path=None,
boldify=False):
"""
生成各种分布：
cfg 这里只用于为dbquery提供地址，并没有提供对数据分布进行控制
self.ind_slot_dist: 独立实体分布
self.ind_slot_value_dist: 独立实体值分布
self.domain_ordering_dist: domain请求分布
self.book_dist: 订阅分布
Args:
goal_model_path: path to a goal model
corpus_path: path to a dialog corpus to build a goal model
"""
self.cfg = cfg
if self.cfg.d:
self.domains = [self.cfg.d]
else:
print(self.cfg)
self.domains = {
'attraction', 'hotel', 'restaurant', 'train', 'taxi',
'hospital', 'police'
}
self.dbquery = DBQuery(data_dir, cfg)
self.goal_model_path = data_dir + '/' + goal_model_path
self.corpus_path = data_dir + '/' + corpus_path if corpus_path is not None else None
self.boldify = do_boldify if boldify else null_boldify
if os.path.exists(self.goal_model_path):
with open(self.goal_model_path, 'rb') as f:
self.ind_slot_dist, self.ind_slot_value_dist, self.domain_ordering_dist, self.book_dist = pickle.load(
f)
logging.info('Loading goal model is done')
else:
self._build_goal_model()
logging.info('Building goal model is done')
# remove some slot
if 'police' in self.ind_slot_dist:
del self.ind_slot_dist['police']['reqt']['postcode']
del self.ind_slot_value_dist['police']['reqt']['postcode']
if 'hospital' in self.ind_slot_dist:
del self.ind_slot_dist['hospital']['reqt']['postcode']
del self.ind_slot_value_dist['hospital']['reqt']['postcode']
del self.ind_slot_dist['hospital']['reqt']['address']
del self.ind_slot_value_dist['hospital']['reqt']['address']
def _build_goal_model(self):
with open(self.corpus_path) as f:
dialogs = json.load(f)
# domain ordering
def _get_dialog_domains(dialog):
"""收集dialog中的有效domains"""
return list(
filter(
lambda x: x in self.domains and len(dialog['goal'][x]) > 0,
dialog['goal']))
domain_orderings = []
for d in dialogs:
d_domains = _get_dialog_domains(dialogs[d])
if self.cfg.d:
# 直接跳过多场景切换问题, 如果需要增加对多场景切换问题的研究，则需要注释掉这段
if len(d_domains) > 1 or len(d_domains) == 0:
continue
# print("d_domains: ", d_domains)
first_index = []
# 找到每个domain的首行message
for domain in d_domains:
message = [dialogs[d]['goal']['message']] if type(dialogs[d]['goal']['message']) == str else \
dialogs[d]['goal']['message']
for i, m in enumerate(message):
if domain_keywords[domain].lower() in m.lower(
) or domain.lower() in m.lower():
first_index.append(i)
break
# 根据首行message的实际序号，调整domains的出现顺序
domain_orderings.append(
tuple(
map(
lambda x: x[1],
sorted(zip(first_index, d_domains),
key=lambda x: x[0]))))
domain_ordering_cnt = Counter(domain_orderings)
self.domain_ordering_dist = deepcopy(domain_ordering_cnt)
# 转化为概率值
for order in domain_ordering_cnt.keys():
self.domain_ordering_dist[order] = domain_ordering_cnt[
order] / sum(domain_ordering_cnt.values())
# independent goal slot distribution
ind_slot_value_cnt = dict([(domain, {}) for domain in self.domains])
domain_cnt = Counter()
book_cnt = Counter()
# 对各个用户的用户目标进行统计
for d in dialogs:
for domain in self.domains:
# 统计domain出现的次数
if dialogs[d]['goal'][domain] != {}:
domain_cnt[domain] += 1
# 统计info中各个slot及其slot-value出现的次数
if 'info' in dialogs[d]['goal'][domain]:
for slot in dialogs[d]['goal'][domain]['info']:
if 'invalid' in slot:
continue
if 'info' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['info'] = {}
if slot not in ind_slot_value_cnt[domain]['info']:
ind_slot_value_cnt[domain]['info'][slot] = Counter(
)
if 'care' in dialogs[d]['goal'][domain]['info'][slot]:
continue
slot_value = dialogs[d]['goal'][domain]['info'][slot]
ind_slot_value_cnt[domain]['info'][slot][
slot_value] += 1
# 统计用户目标汇总reqt的slot出现的次数，由于没有value，因此直接对slot进行统计
if 'reqt' in dialogs[d]['goal'][domain]:
for slot in dialogs[d]['goal'][domain]['reqt']:
if 'reqt' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['reqt'] = Counter()
ind_slot_value_cnt[domain]['reqt'][slot] += 1
# 统计用户目标中book的信息
if 'book' in dialogs[d]['goal'][domain]:
# 各个domain book的概率
book_cnt[domain] += 1
# book中限制slot的value的次数
for slot in dialogs[d]['goal'][domain]['book']:
if 'invalid' in slot:
continue
if 'book' not in ind_slot_value_cnt[domain]:
ind_slot_value_cnt[domain]['book'] = {}
if slot not in ind_slot_value_cnt[domain]['book']:
ind_slot_value_cnt[domain]['book'][slot] = Counter(
)
if 'care' in dialogs[d]['goal'][domain]['book'][slot]:
continue
ind_slot_value_cnt[domain]['book'][slot][
dialogs[d]['goal'][domain]['book'][slot]] += 1
# 收集完成ind_slot_value_cnt 和 domain_cnt 和 book_cnt 的信息
# 计算得到 ind_slot_dist ind_slot_value_dist 基于不同domain的分布
self.ind_slot_value_dist = deepcopy(ind_slot_value_cnt)
self.ind_slot_dist = dict([(domain, {}) for domain in self.domains])
self.book_dist = {}
for domain in self.domains:
if 'info' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['info']:
if 'info' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['info'] = {}
if slot not in self.ind_slot_dist[domain]['info']:
self.ind_slot_dist[domain]['info'][slot] = {}
self.ind_slot_dist[domain]['info'][slot] = sum(ind_slot_value_cnt[domain]['info'][slot].values()) / \
domain_cnt[domain]
slot_total = sum(
ind_slot_value_cnt[domain]['info'][slot].values())
for val in self.ind_slot_value_dist[domain]['info'][slot]:
self.ind_slot_value_dist[domain]['info'][slot][
val] = ind_slot_value_cnt[domain]['info'][slot][
val] / slot_total
if 'reqt' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['reqt']:
if 'reqt' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['reqt'] = {}
self.ind_slot_dist[domain]['reqt'][
slot] = ind_slot_value_cnt[domain]['reqt'][
slot] / domain_cnt[domain]
self.ind_slot_value_dist[domain]['reqt'][slot] = ind_slot_value_cnt[domain]['reqt'][slot] / \
domain_cnt[domain]
if 'book' in ind_slot_value_cnt[domain]:
for slot in ind_slot_value_cnt[domain]['book']:
if 'book' not in self.ind_slot_dist[domain]:
self.ind_slot_dist[domain]['book'] = {}
if slot not in self.ind_slot_dist[domain]['book']:
self.ind_slot_dist[domain]['book'][slot] = {}
self.ind_slot_dist[domain]['book'][slot] = sum(ind_slot_value_cnt[domain]['book'][slot].values()) / \
domain_cnt[domain]
slot_total = sum(
ind_slot_value_cnt[domain]['book'][slot].values())
for val in self.ind_slot_value_dist[domain]['book'][slot]:
self.ind_slot_value_dist[domain]['book'][slot][
val] = ind_slot_value_cnt[domain]['book'][slot][
val] / slot_total
self.book_dist[domain] = book_cnt[domain] / len(dialogs)
# print()
# print("ind_slot_dist:", self.ind_slot_dist)
# print("ind_slot_value_dist ", self.ind_slot_value_dist)
# print("domain_ordering_dist:", self.domain_ordering_dist)
# print("book_dist:", self.book_dist)
# print()
goal_model_path_dir = os.path.dirname(self.goal_model_path)
if len(goal_model_path_dir) > 0 and not os.path.exists(
goal_model_path_dir):
os.makedirs(goal_model_path_dir)
with open(self.goal_model_path, 'wb') as f:
pickle.dump((self.ind_slot_dist, self.ind_slot_value_dist,
self.domain_ordering_dist, self.book_dist), f)
def _get_domain_goal(self, domain):
"""按照domain的设定，生成对应的目标"""
cnt_slot = self.ind_slot_dist[domain]
cnt_slot_value = self.ind_slot_value_dist[domain]
pro_book = self.book_dist[domain]
while True:
domain_goal = {'info': {}}
# inform
if 'info' in cnt_slot:
for slot in cnt_slot['info']:
# 一定概率增加对该slot的限制
if random.random(
) < cnt_slot['info'][slot] + pro_correction['info']:
domain_goal['info'][slot] = nomial_sample(
cnt_slot_value['info'][slot])
# 对hotel restaurant attraction的限制，
if domain in ['hotel', 'restaurant', 'attraction'
] and 'name' in domain_goal['info'] and len(
domain_goal['info']) > 1:
# 一定概率提供name，但是只需要提供name就可以了，其他的信息已经不重要了
if random.random() < cnt_slot['info']['name']:
domain_goal['info'] = {
'name': domain_goal['info']['name']
}
else:
# 或者删掉name
del domain_goal['info']['name']
# 对于taxi 和train， 采用一定的概率删除leaveAt和arriveBy中的一个，不然答案就唯一了
if domain in ['taxi', 'train'] and 'arriveBy' in domain_goal[
'info'] and 'leaveAt' in domain_goal['info']:
if random.random() < (cnt_slot['info']['leaveAt'] /
(cnt_slot['info']['arriveBy'] +
cnt_slot['info']['leaveAt'])):
del domain_goal['info']['arriveBy']
else:
del domain_goal['info']['leaveAt']
# 但是arriveBy和leaveAt又必须提供一个
if domain in ['taxi', 'train'] and 'arriveBy' not in domain_goal['info'] and 'leaveAt' not in \
domain_goal['info']:
if random.random() < (cnt_slot['info']['arriveBy'] /
(cnt_slot['info']['arriveBy'] +
cnt_slot['info']['leaveAt'])):
domain_goal['info']['arriveBy'] = nomial_sample(
cnt_slot_value['info']['arriveBy'])
else:
domain_goal['info']['leaveAt'] = nomial_sample(
cnt_slot_value['info']['leaveAt'])
# 需要告知出发地点和目的地
if domain in ['taxi', 'train'
] and 'departure' not in domain_goal['info']:
domain_goal['info']['departure'] = nomial_sample(
cnt_slot_value['info']['departure'])
if domain in ['taxi', 'train'
] and 'destination' not in domain_goal['info']:
domain_goal['info']['destination'] = nomial_sample(
cnt_slot_value['info']['destination'])
# 如果出发地和目的地一样，一定概率重新采样
if domain in ['taxi', 'train'] and \
'departure' in domain_goal['info'] and \
'destination' in domain_goal['info']:
while domain_goal['info']['departure'] == domain_goal[
'info']['destination']:
if random.random() < (
cnt_slot['info']['departure'] /
(cnt_slot['info']['departure'] +
cnt_slot['info']['destination'])):
domain_goal['info']['departure'] = nomial_sample(
cnt_slot_value['info']['departure'])
else:
domain_goal['info']['destination'] = nomial_sample(
cnt_slot_value['info']['destination'])
# print("same destination departure")
if domain_goal['info'] == {}:
# 如果没有用户提供的信息，则重新生成
continue
# request
# 针对infor的设定，随机选择request的限制
if 'reqt' in cnt_slot:
reqt = [
slot for slot in cnt_slot['reqt']
if random.random() < cnt_slot['reqt'][slot] +
pro_correction['reqt'] and slot not in domain_goal['info']
]
if len(reqt) > 0:
domain_goal['reqt'] = reqt
# book
# 一定概率决定是否book， 但是对于book的信息并没有和info生成的信息进行协调
if 'book' in cnt_slot and random.random(
) < pro_book + pro_correction['book']:
if 'book' not in domain_goal:
domain_goal['book'] = {}
for slot in cnt_slot['book']:
# 随机选取book的限制
if random.random(
) < cnt_slot['book'][slot] + pro_correction['book']:
domain_goal['book'][slot] = nomial_sample(
cnt_slot_value['book'][slot])
# makes sure that there are all necessary slots for booking
# 预定餐馆需要告知时间
if domain == 'restaurant' and 'time' not in domain_goal['book']:
domain_goal['book']['time'] = nomial_sample(
cnt_slot_value['book']['time'])
# 预定旅馆需要告知几天
if domain == 'hotel' and 'stay' not in domain_goal['book']:
domain_goal['book']['stay'] = nomial_sample(
cnt_slot_value['book']['stay'])
# 预定残旅馆需要告知哪天几个人
if domain in ['hotel', 'restaurant'
] and 'day' not in domain_goal['book']:
domain_goal['book']['day'] = nomial_sample(
cnt_slot_value['book']['day'])
if domain in ['hotel', 'restaurant'
] and 'people' not in domain_goal['book']:
domain_goal['book']['people'] = nomial_sample(
cnt_slot_value['book']['people'])
# 如果是train，需要告知几个人
if domain == 'train' and len(domain_goal['book']) <= 0:
domain_goal['book']['people'] = nomial_sample(
cnt_slot_value['book']['people'])
# fail_book
# 只有残旅馆会出现fail_book
if 'book' in domain_goal and random.random() < 0.5:
# 对于旅馆的订购失败设定
if domain == 'hotel':
domain_goal['fail_book'] = deepcopy(domain_goal['book'])
if 'stay' in domain_goal['book'] and random.random() < 0.5:
# increase hotel-stay
# 一定概率增加天数
domain_goal['fail_book']['stay'] = str(
int(domain_goal['book']['stay']) + 1)
elif 'day' in domain_goal['book']:
# push back hotel-day by a day
# 一定概率提前日期
domain_goal['fail_book']['day'] = days[
(days.index(domain_goal['book']['day']) - 1) % 7]
elif domain == 'restaurant':
domain_goal['fail_book'] = deepcopy(domain_goal['book'])
if 'time' in domain_goal['book'] and random.random() < 0.5:
hour, minute = domain_goal['book']['time'].split(':')
# 增加1小时
domain_goal['fail_book']['time'] = str(
(int(hour) + 1) % 24) + ':' + minute
elif 'day' in domain_goal['book']:
if random.random() < 0.5:
# 提前一天
domain_goal['fail_book']['day'] = days[
(days.index(domain_goal['book']['day']) - 1) %
7]
else:
# 推迟一天
domain_goal['fail_book']['day'] = days[
(days.index(domain_goal['book']['day']) + 1) %
7]
# fail_info
if 'info' in domain_goal and len(
self.dbquery.query(domain,
domain_goal['info'].items())) == 0:
# 随机生成的信息查询不到时，设置fail_info
num_trial = 0
# 尝试重新生成，尝试次数不超过100次
while num_trial < 100:
adjusted_info = self._adjust_info(domain,
domain_goal['info'])
if len(self.dbquery.query(domain,
adjusted_info.items())) > 0:
# train不经行fail_info
if domain == 'train':
domain_goal['info'] = adjusted_info
else:
domain_goal['fail_info'] = domain_goal['info']
domain_goal['info'] = adjusted_info
break
num_trial += 1
if num_trial >= 100:
# 大于100次尝试失败，重新生成用户目标
continue
# at least there is one request and book
# 用户至少需要提一个要求
if 'reqt' in domain_goal or 'book' in domain_goal:
break
return domain_goal
def get_user_goal(self, seed=None):
# seed the generator to get fixed goal
if seed is not None:
random.seed(seed)
np.random.seed(seed)
# 先确定domain_ordering
domain_ordering = []
while not domain_ordering:
domain_ordering = list(nomial_sample(self.domain_ordering_dist))
np.random.shuffle(domain_ordering)
user_goal = {
dom: self._get_domain_goal(dom)
for dom in domain_ordering
}
assert len(user_goal.keys()) > 0
# using taxi to communte between places, removing destination and departure.
# 如果taxi中有地址出现，则需要跟之前的domain一致,
if 'taxi' in domain_ordering:
places = [
dom for dom in domain_ordering[:domain_ordering.index('taxi')]
if 'address' in self.ind_slot_dist[dom]['reqt'].keys()
]
if len(places) >= 1:
del user_goal['taxi']['info']['destination']
user_goal[places[-1]]['reqt'] = list(
set(user_goal[places[-1]].get('reqt',
[])).union({'address'}))
# 时间上也要保持一致
if places[-1] == 'restaurant' and 'book' in user_goal[
'restaurant']:
user_goal['taxi']['info']['arriveBy'] = user_goal[
'restaurant']['book']['time']
if 'leaveAt' in user_goal['taxi']['info']:
del user_goal['taxi']['info']['leaveAt']
# 起点和终点
if len(places) >= 2:
del user_goal['taxi']['info']['departure']
user_goal[places[-2]]['reqt'] = list(
set(user_goal[places[-2]].get('reqt',
[])).union({'address'}))
# match area of attraction and restaurant
# 景点和饭店地点应该在一起
if 'restaurant' in domain_ordering and \
'attraction' in domain_ordering and \
'fail_info' not in user_goal['restaurant'] and \
domain_ordering.index('restaurant') > domain_ordering.index('attraction') and \
'area' in user_goal['restaurant']['info'] and 'area' in user_goal['attraction']['info']:
adjusted_restaurant_goal = deepcopy(
user_goal['restaurant']['info'])
adjusted_restaurant_goal['area'] = user_goal['attraction']['info'][
'area']
# 数据库有的话，一定程度转移
if len(
self.dbquery.query('restaurant',
adjusted_restaurant_goal.items())
) > 0 and random.random() < 0.5:
user_goal['restaurant']['info']['area'] = user_goal[
'attraction']['info']['area']
# match day and people of restaurant and hotel
# 餐旅馆的人数和天数应该一致，调整之后检查是不是和fail_book冲突了，如果是删掉fail_book
if 'restaurant' in domain_ordering and 'hotel' in domain_ordering and \
'book' in user_goal['restaurant'] and 'book' in user_goal['hotel']:
if random.random() < 0.5:
user_goal['restaurant']['book']['people'] = user_goal['hotel'][
'book']['people']
if 'fail_book' in user_goal['restaurant']:
user_goal['restaurant']['fail_book']['people'] = user_goal[
'hotel']['book']['people']
if random.random() < 1.0:
user_goal['restaurant']['book']['day'] = user_goal['hotel'][
'book']['day']
if 'fail_book' in user_goal['restaurant']:
user_goal['restaurant']['fail_book']['day'] = user_goal[
'hotel']['book']['day']
if user_goal['restaurant']['book']['day'] == user_goal['restaurant']['fail_book']['day'] and \
user_goal['restaurant']['book']['time'] == user_goal['restaurant']['fail_book']['time'] and \
user_goal['restaurant']['book']['people'] == user_goal['restaurant']['fail_book']['people']:
del user_goal['restaurant']['fail_book']
# match day and people of hotel and train
if 'hotel' in domain_ordering and 'train' in domain_ordering and \
'book' in user_goal['hotel'] and 'info' in user_goal['train']:
if user_goal['train']['info']['destination'] == 'cambridge' and \
'day' in user_goal['hotel']['book']:
user_goal['train']['info']['day'] = user_goal['hotel']['book'][
'day']
elif user_goal['train']['info']['departure'] == 'cambridge' and \
'day' in user_goal['hotel']['book'] and 'stay' in user_goal['hotel']['book']:
user_goal['train']['info']['day'] = days[
(days.index(user_goal['hotel']['book']['day']) +
int(user_goal['hotel']['book']['stay'])) % 7]
# In case, we have no query results with adjusted train goal, we simply drop the train goal.
if len(
self.dbquery.query(
'train', user_goal['train']['info'].items())) == 0:
del user_goal['train']
domain_ordering.remove('train')
user_goal['domain_ordering'] = domain_ordering
return user_goal
def _adjust_info(self, domain, info):
# adjust one of the slots of the info
# 随机选择一个slot进行随机替换
adjusted_info = deepcopy(info)
slot = random.choice(list(info.keys()))
adjusted_info[slot] = random.choice(
list(self.ind_slot_value_dist[domain]['info'][slot].keys()))
return adjusted_info
def build_message(self, user_goal, boldify=null_boldify):
message = []
state = deepcopy(user_goal)
for dom in user_goal['domain_ordering']:
state = deepcopy(user_goal[dom])
if not (dom == 'taxi' and len(state['info']) == 1):
# intro
m = [templates[dom]['intro']]
# info
def fill_info_template(user_goal, domain, slot, info):
if slot != 'area' or not (
'restaurant' in user_goal and 'attraction' in user_goal
and info in user_goal['restaurant'].keys()
and info in user_goal['attraction'].keys()
and 'area' in user_goal['restaurant'][info]
and 'area' in user_goal['attraction'][info]
and user_goal['restaurant'][info]['area']
== user_goal['attraction'][info]['area']):
return templates[domain][slot].format(
self.boldify(user_goal[domain][info][slot]))
else:
restaurant_index = user_goal['domain_ordering'].index(
'restaurant')
attraction_index = user_goal['domain_ordering'].index(
'attraction')
if restaurant_index > attraction_index and domain == 'restaurant':
return templates[domain][slot].format(
self.boldify('same area as the attraction'))
elif attraction_index > restaurant_index and domain == 'attraction':
return templates[domain][slot].format(
self.boldify('same area as the restaurant'))
return templates[domain][slot].format(
self.boldify(user_goal[domain][info][slot]))
info = 'info'
if 'fail_info' in user_goal[dom]:
info = 'fail_info'
if dom == 'taxi' and len(state[info]) == 1:
taxi_index = user_goal['domain_ordering'].index('taxi')
places = [
dom for dom in user_goal['domain_ordering'][:taxi_index]
if dom in ['attraction', 'hotel', 'restaurant']
]
if len(places) >= 2:
random.shuffle(places)
m.append(templates['taxi']['commute'])
if 'arriveBy' in state[info]:
m.append(
'The taxi should arrive at the {} from the {} by {}.'
.format(self.boldify(places[0]),
self.boldify(places[1]),
self.boldify(state[info]['arriveBy'])))
elif 'leaveAt' in state[info]:
m.append(
'The taxi should leave from the {} to the {} after {}.'
.format(self.boldify(places[0]),
self.boldify(places[1]),
self.boldify(state[info]['leaveAt'])))
message.append(' '.join(m))
else:
while len(state[info]) > 0:
num_acts = random.randint(1, min(len(state[info]), 3))
slots = random.sample(list(state[info].keys()), num_acts)
sents = [
fill_info_template(user_goal, dom, slot, info)
for slot in slots
if slot not in ['parking', 'internet']
]
if 'parking' in slots:
sents.append(templates[dom]['parking ' +
state[info]['parking']])
if 'internet' in slots:
sents.append(templates[dom]['internet ' +
state[info]['internet']])
m.extend(sents)
message.append(' '.join(m))
m = []
for slot in slots:
del state[info][slot]
# fail_info
if 'fail_info' in user_goal[dom]:
adjusted_slot = list(
filter(
lambda x: x[0][1] != x[1][1],
zip(user_goal[dom]['info'].items(),
user_goal[dom]['fail_info'].items())))[0][0][0]
if adjusted_slot in ['internet', 'parking']:
message.append(
templates[dom]['fail_info ' + adjusted_slot + ' ' +
user_goal[dom]['info'][adjusted_slot]])
else:
message.append(
templates[dom]['fail_info ' + adjusted_slot].format(
self.boldify(
user_goal[dom]['info'][adjusted_slot])))
# reqt
if 'reqt' in state:
slot_strings = []
for slot in state['reqt']:
if slot in ['internet', 'parking', 'food']:
continue
slot_strings.append(slot if slot not in
request_slot_string_map else
request_slot_string_map[slot])
if len(slot_strings) > 0:
message.append(templates[dom]['request'].format(
self.boldify(', '.join(slot_strings))))
if 'internet' in state['reqt']:
message.append(
'Make sure to ask if the hotel includes free wifi.')
if 'parking' in state['reqt']:
message.append(
'Make sure to ask if the hotel includes free parking.')
if 'food' in state['reqt']:
message.append(
'Make sure to ask about what food it serves.')
def get_same_people_domain(user_goal, domain, slot):
if slot not in ['day', 'people']:
return None
domain_index = user_goal['domain_ordering'].index(domain)
previous_domains = user_goal['domain_ordering'][:domain_index]
for prev in previous_domains:
if prev in ['restaurant', 'hotel', 'train'] and 'book' in user_goal[prev] and \
slot in user_goal[prev]['book'] and user_goal[prev]['book'][slot] == \
user_goal[domain]['book'][slot]:
return prev
return None
# book
book = 'book'
if 'fail_book' in user_goal[dom]:
book = 'fail_book'
if 'book' in state:
slot_strings = []
for slot in ['people', 'time', 'day', 'stay']:
if slot in state[book]:
if slot == 'people':
same_people_domain = get_same_people_domain(
user_goal, dom, slot)
if same_people_domain is None:
slot_strings.append('for {} people'.format(
self.boldify(state[book][slot])))
else:
slot_strings.append(
self.boldify(
'for the same group of people as the {} booking'
.format(same_people_domain)))
elif slot == 'time':
slot_strings.append('at {}'.format(
self.boldify(state[book][slot])))
elif slot == 'day':
same_people_domain = get_same_people_domain(
user_goal, dom, slot)
if same_people_domain is None:
slot_strings.append('on {}'.format(
self.boldify(state[book][slot])))
else:
slot_strings.append(
self.boldify(
'on the same day as the {} booking'.
format(same_people_domain)))
elif slot == 'stay':
slot_strings.append('for {} nights'.format(
self.boldify(state[book][slot])))
del state[book][slot]
assert len(state[book]) <= 0, state[book]
if len(slot_strings) > 0:
message.append(templates[dom]['book'].format(
' '.join(slot_strings)))
# fail_book
if 'fail_book' in user_goal[dom]:
adjusted_slot = list(
filter(
lambda x: x[0][1] != x[1][1],
zip(user_goal[dom]['book'].items(),
user_goal[dom]['fail_book'].items())))[0][0][0]
if adjusted_slot in ['internet', 'parking']:
message.append(
templates[dom]['fail_book ' + adjusted_slot + ' ' +
user_goal[dom]['book'][adjusted_slot]])
else:
message.append(
templates[dom]['fail_book ' + adjusted_slot].format(
self.boldify(
user_goal[dom]['book'][adjusted_slot])))
if boldify == do_boldify:
for i, m in enumerate(message):
message[i] = message[i].replace('wifi', "<b>wifi</b>")
message[i] = message[i].replace('internet', "<b>internet</b>")
message[i] = message[i].replace('parking', "<b>parking</b>")
return message