diff --git a/mongiris/api.py b/mongiris/api.py
index cfc70b8792819b5dc0ddca1304131589bf0d1428..e1ca9c2aa2830f3124522ee276a1aa15747c761f 100755
--- a/mongiris/api.py
+++ b/mongiris/api.py
@@ -15,10 +15,10 @@ max_timeout = 3  # delay before connection timeout
 
 class Mongiris:
     """
-    The Mongiris class is an API to manipulate data from the MongoDB `dbinsee` datatase.
+    The Mongiris class is an API to manipulate data from a MongoDB database containing neighbourhoods (GeoJSON format).
 
     Several methods accepts a 'collection' parameter for flexibility (i.e., be able to query other collections than the
-    iris collection).
+    neighbourhoods collection).
     Most methods convert resulting documents from the BSON format (MongoDB) to JSON. This mainly avoids the issue of
     ObjectId type (for MongoDB '_id' field).
 
@@ -29,11 +29,12 @@ class Mongiris:
 
     Examples of usages, including testing geospatial queries, are available in `tests/api_tests.py`.
 
-    An example of IRIS following the GeoJSON format is provided in `data/example-iris.json`.
+    An example of neighbourhood following the GeoJSON format is provided in `data/example-neighbourhood.json`.
 
     Args:
-        db: the database name to connect to (string)
-        collection: the collection name containing neighbourhoods (string)
+        db: the MongoDB database name to connect to (string)
+            coll_neighbourhoods: the name of the neighbourhoods collection, inside database db (string)
+            coll_indic: the name of the indicators collection, inside database db (string)
 
     Additional resources:
 
@@ -45,13 +46,14 @@ class Mongiris:
 
     """
 
-    def __init__(self, db, collection):
+    def __init__(self, db, coll_neighbourhoods, coll_indic='collindic'):
         logging.basicConfig(format='[%(levelname)s] - %(name)s - %(asctime)s : %(message)s')
         self.logger = logging.getLogger()
         self.logger.setLevel(logging.INFO)
         self.connection, self.connection_status = self.init_connection()  # default connection on 'localhost', 27017
         self.database = self.connection[db]  # link to database
-        self.collection_neighbourhoods = self.database[collection]  # link to collection
+        self.collection_neighbourhoods = self.database[coll_neighbourhoods]  # link to neighbourhoods collection
+        self.collection_indicators = self.database[coll_indic]  # link to indicators collection (used for prediction)
 
     @staticmethod
     def bson_to_json(doc_bson):
diff --git a/mongiris/data/example-iris.json b/mongiris/data/example-neighbourhood.json
similarity index 100%
rename from mongiris/data/example-iris.json
rename to mongiris/data/example-neighbourhood.json