Upload database.py

database.py

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+import json
+import os
+import random
+from fuzzywuzzy import fuzz
+from itertools import chain
+from zipfile import ZipFile
+from copy import deepcopy
+from convlab.util.unified_datasets_util import BaseDatabase
+
+
+class Database(BaseDatabase):
+    def __init__(self):
+        """extract data.zip and load the database."""
+        archive = ZipFile(os.path.join(os.path.dirname(os.path.abspath(__file__)), 'data.zip'))
+        self.domains = ['restaurant', 'hotel', 'attraction', 'train', 'hospital', 'police']
+        self.dbs = {}
+        for domain in self.domains:
+            with archive.open('data/{}_db.json'.format(domain)) as f:
+                self.dbs[domain] = json.loads(f.read())
+        # add some missing information
+        self.dbs['taxi'] = {
+            "taxi_colors": ["black","white","red","yellow","blue","grey"],
+            "taxi_types":  ["toyota","skoda","bmw","honda","ford","audi","lexus","volvo","volkswagen","tesla"],
+            "taxi_phone": ["^[0-9]{10}$"]
+        }
+        self.dbs['police'][0]['postcode'] = "cb11jg"
+        for entity in self.dbs['hospital']:
+            entity['postcode'] = "cb20qq"
+            entity['address'] = "Hills Rd, Cambridge"
+
+        self.slot2dbattr = {
+            'open hours': 'openhours',
+            'price range': 'pricerange',
+            'arrive by': 'arriveBy',
+            'leave at': 'leaveAt',
+            'train id': 'trainID'
+        }
+
+    def query(self, domain: str, state: dict, topk: int, ignore_open=False, soft_contraints=(), fuzzy_match_ratio=60) -> list:
+        """return a list of topk entities (dict containing slot-value pairs) for a given domain based on the dialogue state."""
+        # query the db
+        if domain == 'taxi':
+            return [{'taxi_colors': random.choice(self.dbs[domain]['taxi_colors']),
+            'taxi_types': random.choice(self.dbs[domain]['taxi_types']),
+            'taxi_phone': ''.join([str(random.randint(1, 9)) for _ in range(11)])}]
+        if domain == 'police':
+            return deepcopy(self.dbs['police'])
+        if domain == 'hospital':
+            department = None
+            for key, val in state:
+                if key == 'department':
+                    department = val
+            if not department:
+                return deepcopy(self.dbs['hospital'])
+            else:
+                return [deepcopy(x) for x in self.dbs['hospital'] if x['department'].lower() == department.strip().lower()]
+        state = list(map(lambda ele: (self.slot2dbattr.get(ele[0], ele[0]), ele[1]) if not(ele[0] == 'area' and ele[1] == 'center') else ('area', 'centre'), state))
+
+        found = []
+        for i, record in enumerate(self.dbs[domain]):
+            constraints_iterator = zip(state, [False] * len(state))
+            soft_contraints_iterator = zip(soft_contraints, [True] * len(soft_contraints))
+            for (key, val), fuzzy_match in chain(constraints_iterator, soft_contraints_iterator):
+                if val in ["", "dont care", 'not mentioned', "don't care", "dontcare", "do n't care"]:
+                    pass
+                else:
+                    try:
+                        if key not in record:
+                            continue
+                        if key == 'leaveAt':
+                            val1 = int(val.split(':')[0]) * 100 + int(val.split(':')[1])
+                            val2 = int(record['leaveAt'].split(':')[0]) * 100 + int(record['leaveAt'].split(':')[1])
+                            if val1 > val2:
+                                break
+                        elif key == 'arriveBy':
+                            val1 = int(val.split(':')[0]) * 100 + int(val.split(':')[1])
+                            val2 = int(record['arriveBy'].split(':')[0]) * 100 + int(record['arriveBy'].split(':')[1])
+                            if val1 < val2:
+                                break
+                        # elif ignore_open and key in ['destination', 'departure', 'name']:
+                        elif ignore_open and key in ['destination', 'departure']:
+                            continue
+                        elif record[key].strip() == '?':
+                            # '?' matches any constraint
+                            continue
+                        else:
+                            if not fuzzy_match:
+                                if val.strip().lower() != record[key].strip().lower():
+                                    break
+                            else:
+                                if fuzz.partial_ratio(val.strip().lower(), record[key].strip().lower()) < fuzzy_match_ratio:
+                                    break
+                    except:
+                        continue
+            else:
+                res = deepcopy(record)
+                res['Ref'] = '{0:08d}'.format(i)
+                found.append(res)
+                if len(found) == topk:
+                    return found
+        return found
+
+
+if __name__ == '__main__':
+    db = Database()
+    assert issubclass(Database, BaseDatabase)
+    assert isinstance(db, BaseDatabase)
+    res = db.query("restaurant", [['price range', 'expensive']], topk=3)
+    print(res, len(res))
+    # print(db.query("hotel", [['price range', 'moderate'], ['stars','4'], ['type', 'guesthouse'], ['internet', 'yes'], ['parking', 'no'], ['area', 'east']]))