Generic_DialogSystem/DialogManager.ipynb

import json
import os


class DST():
    def __init__(self):
        self.state = json.load(open('dictionary.json'))

    def update(self, user_act=None):
        for intent, domain, slot, value in user_act:
            domain = domain.lower()
            intent = intent.lower()
            slot = slot.lower()
            
            if domain not in self.state['belief_state']:
                continue

            if intent == 'inform':
                if slot == 'none' or slot == '':
                    continue

                domain_dic = self.state['belief_state'][domain]

                if slot in domain_dic:
                    self.state['belief_state'][domain][slot] = value

            elif intent == 'request':
                if domain not in self.state['request_state']:
                    self.state['request_state'][domain] = {}
                if slot not in self.state['request_state'][domain]:
                    self.state['request_state'][domain][slot] = 0

        return self.state

dst = DST()
user_act = [('inform', 'payment', 'type', 'credit card'), ('inform', 'product', 'name', 'iPhone')]
state = dst.update(user_act)

print(state['belief_state'])
print(state['request_state'])

{'payment': {'type': 'credit card', 'amount': '', 'loyalty_card': ''}, 'delivery': {'type': '', 'address': '', 'time': ''}, 'product': {'name': 'iPhone', 'type': '', 'brand': '', 'price': '', 'quantity': '', 'quality': ''}}
{}