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usersim_rule.py
434 lines (348 loc) · 21.9 KB
/
usersim_rule.py
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"""
Created on May 14, 2016
a rule-based user simulator
-- user_goals_first_turn_template.revised.v1.p: all goals
-- user_goals_first_turn_template.part.movie.v1.p: moviename in goal.inform_slots
-- user_goals_first_turn_template.part.nomovie.v1.p: no moviename in goal.inform_slots
@author: xiul, t-zalipt
"""
from .usersim import UserSimulator
import argparse, json, random, copy
from deep_dialog import dialog_config
class RuleSimulator(UserSimulator):
""" A rule-based user simulator for testing dialog policy """
def __init__(self, movie_dict=None, act_set=None, slot_set=None, start_set=None, params=None):
""" Constructor shared by all user simulators """
self.movie_dict = movie_dict
self.act_set = act_set
self.slot_set = slot_set
self.start_set = start_set
self.max_turn = params['max_turn']
self.slot_err_probability = params['slot_err_probability']
self.slot_err_mode = params['slot_err_mode']
self.intent_err_probability = params['intent_err_probability']
self.simulator_run_mode = params['simulator_run_mode']
self.simulator_act_level = params['simulator_act_level']
self.learning_phase = params['learning_phase']
def initialize_episode(self):
""" Initialize a new episode (dialog)
state['history_slots']: keeps all the informed_slots
state['rest_slots']: keep all the slots (which is still in the stack yet)
"""
self.state = {}
self.state['history_slots'] = {}
self.state['inform_slots'] = {}
self.state['request_slots'] = {}
self.state['rest_slots'] = []
self.state['turn'] = 0
self.episode_over = False
self.dialog_status = dialog_config.NO_OUTCOME_YET
#self.goal = random.choice(self.start_set)
self.goal = self._sample_goal(self.start_set)
self.goal['request_slots']['ticket'] = 'UNK'
self.constraint_check = dialog_config.CONSTRAINT_CHECK_FAILURE
""" Debug: build a fake goal mannually """
#self.debug_falk_goal()
# sample first action
user_action = self._sample_action()
assert (self.episode_over != 1),' but we just started'
return user_action
def _sample_action(self):
""" randomly sample a start action based on user goal """
self.state['diaact'] = random.choice(dialog_config.start_dia_acts.keys())
# "sample" informed slots
if len(self.goal['inform_slots']) > 0:
known_slot = random.choice(self.goal['inform_slots'].keys())
self.state['inform_slots'][known_slot] = self.goal['inform_slots'][known_slot]
if 'moviename' in self.goal['inform_slots'].keys(): # 'moviename' must appear in the first user turn
self.state['inform_slots']['moviename'] = self.goal['inform_slots']['moviename']
for slot in self.goal['inform_slots'].keys():
if known_slot == slot or slot == 'moviename': continue
self.state['rest_slots'].append(slot)
self.state['rest_slots'].extend(self.goal['request_slots'].keys())
# "sample" a requested slot
request_slot_set = list(self.goal['request_slots'].keys())
request_slot_set.remove('ticket')
if len(request_slot_set) > 0:
request_slot = random.choice(request_slot_set)
else:
request_slot = 'ticket'
self.state['request_slots'][request_slot] = 'UNK'
if len(self.state['request_slots']) == 0:
self.state['diaact'] = 'inform'
if (self.state['diaact'] in ['thanks','closing']): self.episode_over = True #episode_over = True
else: self.episode_over = False #episode_over = False
sample_action = {}
sample_action['diaact'] = self.state['diaact']
sample_action['inform_slots'] = self.state['inform_slots']
sample_action['request_slots'] = self.state['request_slots']
sample_action['turn'] = self.state['turn']
self.add_nl_to_action(sample_action)
return sample_action
def _sample_goal(self, goal_set):
""" sample a user goal """
sample_goal = random.choice(self.start_set[self.learning_phase])
return sample_goal
def corrupt(self, user_action):
""" Randomly corrupt an action with error probs (slot_err_probability and slot_err_mode) on Slot and Intent (intent_err_probability). """
for slot in user_action['inform_slots'].keys():
slot_err_prob_sample = random.random()
if slot_err_prob_sample < self.slot_err_probability: # add noise for slot level
if self.slot_err_mode == 0: # replace the slot_value only
if slot in self.movie_dict.keys(): user_action['inform_slots'][slot] = random.choice(self.movie_dict[slot])
elif self.slot_err_mode == 1: # combined
slot_err_random = random.random()
if slot_err_random <= 0.33:
if slot in self.movie_dict.keys(): user_action['inform_slots'][slot] = random.choice(self.movie_dict[slot])
elif slot_err_random > 0.33 and slot_err_random <= 0.66:
del user_action['inform_slots'][slot]
random_slot = random.choice(self.movie_dict.keys())
user_action[random_slot] = random.choice(self.movie_dict[random_slot])
else:
del user_action['inform_slots'][slot]
elif self.slot_err_mode == 2: #replace slot and its values
del user_action['inform_slots'][slot]
random_slot = random.choice(self.movie_dict.keys())
user_action[random_slot] = random.choice(self.movie_dict[random_slot])
elif self.slot_err_mode == 3: # delete the slot
del user_action['inform_slots'][slot]
intent_err_sample = random.random()
if intent_err_sample < self.intent_err_probability: # add noise for intent level
user_action['diaact'] = random.choice(self.act_set.keys())
def debug_falk_goal(self):
""" Debug function: build a fake goal mannually (Can be moved in future) """
self.goal['inform_slots'].clear()
#self.goal['inform_slots']['city'] = 'seattle'
self.goal['inform_slots']['numberofpeople'] = '2'
#self.goal['inform_slots']['theater'] = 'amc pacific place 11 theater'
#self.goal['inform_slots']['starttime'] = '10:00 pm'
#self.goal['inform_slots']['date'] = 'tomorrow'
self.goal['inform_slots']['moviename'] = 'zoology'
self.goal['inform_slots']['distanceconstraints'] = 'close to 95833'
self.goal['request_slots'].clear()
self.goal['request_slots']['ticket'] = 'UNK'
self.goal['request_slots']['theater'] = 'UNK'
self.goal['request_slots']['starttime'] = 'UNK'
self.goal['request_slots']['date'] = 'UNK'
def next(self, system_action):
""" Generate next User Action based on last System Action """
self.state['turn'] += 2
self.episode_over = False
self.dialog_status = dialog_config.NO_OUTCOME_YET
sys_act = system_action['diaact']
if (self.max_turn > 0 and self.state['turn'] > self.max_turn):
self.dialog_status = dialog_config.FAILED_DIALOG
self.episode_over = True
self.state['diaact'] = "closing"
else:
self.state['history_slots'].update(self.state['inform_slots'])
self.state['inform_slots'].clear()
if sys_act == "inform":
self.response_inform(system_action)
elif sys_act == "multiple_choice":
self.response_multiple_choice(system_action)
elif sys_act == "request":
self.response_request(system_action)
elif sys_act == "thanks":
self.response_thanks(system_action)
elif sys_act == "confirm_answer":
self.response_confirm_answer(system_action)
elif sys_act == "closing":
self.episode_over = True
self.state['diaact'] = "thanks"
self.corrupt(self.state)
response_action = {}
response_action['diaact'] = self.state['diaact']
response_action['inform_slots'] = self.state['inform_slots']
response_action['request_slots'] = self.state['request_slots']
response_action['turn'] = self.state['turn']
response_action['nl'] = ""
# add NL to dia_act
self.add_nl_to_action(response_action)
return response_action, self.episode_over, self.dialog_status
def response_confirm_answer(self, system_action):
""" Response for Confirm_Answer (System Action) """
if len(self.state['rest_slots']) > 0:
request_slot = random.choice(self.state['rest_slots'])
if request_slot in self.goal['request_slots'].keys():
self.state['diaact'] = "request"
self.state['request_slots'][request_slot] = "UNK"
elif request_slot in self.goal['inform_slots'].keys():
self.state['diaact'] = "inform"
self.state['inform_slots'][request_slot] = self.goal['inform_slots'][request_slot]
if request_slot in self.state['rest_slots']:
self.state['rest_slots'].remove(request_slot)
else:
self.state['diaact'] = "thanks"
def response_thanks(self, system_action):
""" Response for Thanks (System Action) """
self.episode_over = True
self.dialog_status = dialog_config.SUCCESS_DIALOG
request_slot_set = copy.deepcopy(self.state['request_slots'].keys())
if 'ticket' in request_slot_set:
request_slot_set.remove('ticket')
rest_slot_set = copy.deepcopy(self.state['rest_slots'])
if 'ticket' in rest_slot_set:
rest_slot_set.remove('ticket')
if len(request_slot_set) > 0 or len(rest_slot_set) > 0:
self.dialog_status = dialog_config.FAILED_DIALOG
for info_slot in self.state['history_slots'].keys():
if self.state['history_slots'][info_slot] == dialog_config.NO_VALUE_MATCH:
self.dialog_status = dialog_config.FAILED_DIALOG
if info_slot in self.goal['inform_slots'].keys():
if self.state['history_slots'][info_slot] != self.goal['inform_slots'][info_slot]:
self.dialog_status = dialog_config.FAILED_DIALOG
if 'ticket' in system_action['inform_slots'].keys():
if system_action['inform_slots']['ticket'] == dialog_config.NO_VALUE_MATCH:
self.dialog_status = dialog_config.FAILED_DIALOG
if self.constraint_check == dialog_config.CONSTRAINT_CHECK_FAILURE:
self.dialog_status = dialog_config.FAILED_DIALOG
def response_request(self, system_action):
""" Response for Request (System Action) """
if len(system_action['request_slots'].keys()) > 0:
slot = system_action['request_slots'].keys()[0] # only one slot
if slot in self.goal['inform_slots'].keys(): # request slot in user's constraints #and slot not in self.state['request_slots'].keys():
self.state['inform_slots'][slot] = self.goal['inform_slots'][slot]
self.state['diaact'] = "inform"
if slot in self.state['rest_slots']: self.state['rest_slots'].remove(slot)
if slot in self.state['request_slots'].keys(): del self.state['request_slots'][slot]
self.state['request_slots'].clear()
elif slot in self.goal['request_slots'].keys() and slot not in self.state['rest_slots'] and slot in self.state['history_slots'].keys(): # the requested slot has been answered
self.state['inform_slots'][slot] = self.state['history_slots'][slot]
self.state['request_slots'].clear()
self.state['diaact'] = "inform"
elif slot in self.goal['request_slots'].keys() and slot in self.state['rest_slots']: # request slot in user's goal's request slots, and not answered yet
self.state['diaact'] = "request" # "confirm_question"
self.state['request_slots'][slot] = "UNK"
########################################################################
# Inform the rest of informable slots
########################################################################
for info_slot in self.state['rest_slots']:
if info_slot in self.goal['inform_slots'].keys():
self.state['inform_slots'][info_slot] = self.goal['inform_slots'][info_slot]
for info_slot in self.state['inform_slots'].keys():
if info_slot in self.state['rest_slots']:
self.state['rest_slots'].remove(info_slot)
else:
if len(self.state['request_slots']) == 0 and len(self.state['rest_slots']) == 0:
self.state['diaact'] = "thanks"
else:
self.state['diaact'] = "inform"
self.state['inform_slots'][slot] = dialog_config.I_DO_NOT_CARE
else: # this case should not appear
if len(self.state['rest_slots']) > 0:
random_slot = random.choice(self.state['rest_slots'])
if random_slot in self.goal['inform_slots'].keys():
self.state['inform_slots'][random_slot] = self.goal['inform_slots'][random_slot]
self.state['rest_slots'].remove(random_slot)
self.state['diaact'] = "inform"
elif random_slot in self.goal['request_slots'].keys():
self.state['request_slots'][random_slot] = self.goal['request_slots'][random_slot]
self.state['diaact'] = "request"
def response_multiple_choice(self, system_action):
""" Response for Multiple_Choice (System Action) """
slot = system_action['inform_slots'].keys()[0]
if slot in self.goal['inform_slots'].keys():
self.state['inform_slots'][slot] = self.goal['inform_slots'][slot]
elif slot in self.goal['request_slots'].keys():
self.state['inform_slots'][slot] = random.choice(system_action['inform_slots'][slot])
self.state['diaact'] = "inform"
if slot in self.state['rest_slots']: self.state['rest_slots'].remove(slot)
if slot in self.state['request_slots'].keys(): del self.state['request_slots'][slot]
def response_inform(self, system_action):
""" Response for Inform (System Action) """
if 'taskcomplete' in system_action['inform_slots'].keys(): # check all the constraints from agents with user goal
self.state['diaact'] = "thanks"
#if 'ticket' in self.state['rest_slots']: self.state['request_slots']['ticket'] = 'UNK'
self.constraint_check = dialog_config.CONSTRAINT_CHECK_SUCCESS
if system_action['inform_slots']['taskcomplete'] == dialog_config.NO_VALUE_MATCH:
self.state['history_slots']['ticket'] = dialog_config.NO_VALUE_MATCH
if 'ticket' in self.state['rest_slots']: self.state['rest_slots'].remove('ticket')
if 'ticket' in self.state['request_slots'].keys(): del self.state['request_slots']['ticket']
for slot in self.goal['inform_slots'].keys():
# Deny, if the answers from agent can not meet the constraints of user
if slot not in system_action['inform_slots'].keys() or (self.goal['inform_slots'][slot].lower() != system_action['inform_slots'][slot].lower()):
self.state['diaact'] = "deny"
self.state['request_slots'].clear()
self.state['inform_slots'].clear()
self.constraint_check = dialog_config.CONSTRAINT_CHECK_FAILURE
break
else:
for slot in system_action['inform_slots'].keys():
self.state['history_slots'][slot] = system_action['inform_slots'][slot]
if slot in self.goal['inform_slots'].keys():
if system_action['inform_slots'][slot] == self.goal['inform_slots'][slot]:
if slot in self.state['rest_slots']: self.state['rest_slots'].remove(slot)
if len(self.state['request_slots']) > 0:
self.state['diaact'] = "request"
elif len(self.state['rest_slots']) > 0:
rest_slot_set = copy.deepcopy(self.state['rest_slots'])
if 'ticket' in rest_slot_set:
rest_slot_set.remove('ticket')
if len(rest_slot_set) > 0:
inform_slot = random.choice(rest_slot_set) # self.state['rest_slots']
if inform_slot in self.goal['inform_slots'].keys():
self.state['inform_slots'][inform_slot] = self.goal['inform_slots'][inform_slot]
self.state['diaact'] = "inform"
self.state['rest_slots'].remove(inform_slot)
elif inform_slot in self.goal['request_slots'].keys():
self.state['request_slots'][inform_slot] = 'UNK'
self.state['diaact'] = "request"
else:
self.state['request_slots']['ticket'] = 'UNK'
self.state['diaact'] = "request"
else: # how to reply here?
self.state['diaact'] = "thanks" # replies "closing"? or replies "confirm_answer"
else: # != value Should we deny here or ?
########################################################################
# TODO When agent informs(slot=value), where the value is different with the constraint in user goal, Should we deny or just inform the correct value?
########################################################################
self.state['diaact'] = "inform"
self.state['inform_slots'][slot] = self.goal['inform_slots'][slot]
if slot in self.state['rest_slots']: self.state['rest_slots'].remove(slot)
else:
if slot in self.state['rest_slots']:
self.state['rest_slots'].remove(slot)
if slot in self.state['request_slots'].keys():
del self.state['request_slots'][slot]
if len(self.state['request_slots']) > 0:
request_set = list(self.state['request_slots'].keys())
if 'ticket' in request_set:
request_set.remove('ticket')
if len(request_set) > 0:
request_slot = random.choice(request_set)
else:
request_slot = 'ticket'
self.state['request_slots'][request_slot] = "UNK"
self.state['diaact'] = "request"
elif len(self.state['rest_slots']) > 0:
rest_slot_set = copy.deepcopy(self.state['rest_slots'])
if 'ticket' in rest_slot_set:
rest_slot_set.remove('ticket')
if len(rest_slot_set) > 0:
inform_slot = random.choice(rest_slot_set) #self.state['rest_slots']
if inform_slot in self.goal['inform_slots'].keys():
self.state['inform_slots'][inform_slot] = self.goal['inform_slots'][inform_slot]
self.state['diaact'] = "inform"
self.state['rest_slots'].remove(inform_slot)
if 'ticket' in self.state['rest_slots']:
self.state['request_slots']['ticket'] = 'UNK'
self.state['diaact'] = "request"
elif inform_slot in self.goal['request_slots'].keys():
self.state['request_slots'][inform_slot] = self.goal['request_slots'][inform_slot]
self.state['diaact'] = "request"
else:
self.state['request_slots']['ticket'] = 'UNK'
self.state['diaact'] = "request"
else:
self.state['diaact'] = "thanks" # or replies "confirm_answer"
def main(params):
user_sim = RuleSimulator()
user_sim.initialize_episode()
if __name__ == "__main__":
parser = argparse.ArgumentParser()
args = parser.parse_args()
params = vars(args)
print ("User Simulator Parameters:")
print (json.dumps(params, indent=2))
main(params)