A Clojure project to kick the tires on Apache Mahout.
Start compojure with ring call:
lein ring server-headless
Example call:
(use 'matchbox.services.recommender)
(find-similar-users 7 3)
To start running the tests and watch for updates use:
lein midje :autotest
MongoDB server
Under Mac OSX install by using brew install mongo and then start with the help of:
sudo mongod --config /usr/local/etc/mongod.conf
http POST http://matchbox.nava.de:3000/items/ name=Billard
http GET http://matchbox.nava.de:3000/items/
Leads to the following sample result:
HTTP/1.1 200 OK
Content-Length: 317
Content-Type: application/json; charset=utf-8
Date: Sun, 14 Dec 2014 00:44:29 GMT
Server: Jetty(7.6.8.v20121106)
{
"items": [
{
"_id": "548cdd3ed282a2a47b2492a9",
"name": "Kino"
},
{
"_id": "548cdd54d282a2a47b2492ab",
"name": "Boxen"
},
{
"_id": "548cdd64d282a2a47b2492ae",
"name": "Billard"
}
]
}
Create a new user
http POST http://matchbox.nava.de:3000/users/ alias=rocko first_name=Rocko last_name=Schamoni
Get all users:
http GET http://matchbox.nava.de:3000/users
{
"users": [
{
"_id": "548dbf1bd2829fb7bf535bbf",
"alias": "heinz",
"first_name": "heinz",
"last_name": "Strunk"
},
{
"_id": "548dbf49d2829fb7bf535bc0",
"alias": "rocko",
"first_name": "Rocko",
"last_name": "Schamoni"
},
{
"_id": "548dbf5fd2829fb7bf535bc1",
"alias": "jac",
"first_name": "Jacques",
"last_name": "Palminger"
}
]
}
Add a new rating:
http POST http://matchbox.nava.de:3000/ratings/ item_id=548cdd3ed282a2a47b2492a9 user_id=548dbf1bd2829fb7bf535bbf preference:=1.0
HTTP/1.1 201 Created
Content-Length: 149
Content-Type: application/json; charset=utf-8
Date: Sun, 14 Dec 2014 16:54:00 GMT
Location: /ratings/548dc0a8d2829fb7bf535bc2
Server: Jetty(7.6.8.v20121106)
{
"_id": "548dc0a8d2829fb7bf535bc2",
"created_at": 1418576041,
"item_id": "548cdd3ed282a2a47b2492a9",
"preference": 1.0,
"user_id": "548dbf1bd2829fb7bf535bbf"
}
Get all ratings
http GET http://matchbox.nava.de:3000/ratings
Get similar users
http GET http://matchbox.nava.de:3000/users/548dbf49d2829fb7bf535bc0/similar-users
HTTP/1.1 200 OK
Content-Length: 110
Content-Type: application/json; charset=utf-8
Date: Sun, 14 Dec 2014 17:01:10 GMT
Server: Jetty(7.6.8.v20121106)
{
"recommended": [
{
"_id": "548dbf1bd2829fb7bf535bbf",
"alias": "heinz",
"first_name": "heinz",
"last_name": "Strunk"
}
]
}
Analyze a sentence and rate a sentiment.
Current mapping is:
- strong negative: -5
- weak negative: -2
- neutral: 0
- weak positive: 2
- strong positive: 5
Example for creating a new sentiment:
http -v POST localhost:3000/sentiments sentence="I do not like George Clooney and don't like rain." user_id=54cf2fdb0364fac8bb99c08b
POST /sentiments HTTP/1.1
Accept: application/json
Accept-Encoding: gzip, deflate
Connection: keep-alive
Content-Length: 104
Content-Type: application/json; charset=utf-8
Host: localhost:3000
User-Agent: HTTPie/0.8.0
{
"sentence": "I do not like George Clooney and don't like rain.",
"user_id": "54cf2fdb0364fac8bb99c08b"
}
HTTP/1.1 201 Created
Access-Control-Allow-Origin: *
Access-Control-Request-Methods: GET,POST,PUT
Content-Length: 1022
Content-Type: application/json; charset=utf-8
Date: Thu, 05 Feb 2015 11:28:33 GMT
Location: /sentiments/54d353e10364f68ce067ae77
Server: Jetty(7.6.13.v20130916)
{
"_id": "54d353e10364f68ce067ae77",
"ratings": [
{
"_id": "54d353e10364f68ce067ae78",
"created_at": 1423135714,
"item": {
"_id": "54d34e1d0364862278b2778b",
"name": "rain"
},
"item_id": "54d34e1d0364862278b2778b",
"preference": -5.0,
"sentiment": "I do not like George Clooney and don't like rain.",
"user": {
"_id": "54cf2fdb0364fac8bb99c08b",
"alias": "werner",
"first_name": "Werner",
"last_name": "Schneeberger"
},
"user_id": "54cf2fdb0364fac8bb99c08b"
},
{
"_id": "54d353e10364f68ce067ae79",
"created_at": 1423135714,
"item": {
"_id": "54d34e1d0364862278b2778d",
"name": "George Clooney"
},
"item_id": "54d34e1d0364862278b2778d",
"preference": -5.0,
"sentiment": "I do not like George Clooney and don't like rain.",
"user": {
"_id": "54cf2fdb0364fac8bb99c08b",
"alias": "werner",
"first_name": "Werner",
"last_name": "Schneeberger"
},
"user_id": "54cf2fdb0364fac8bb99c08b"
}
],
"sentence": "I do not like George Clooney and don't like rain.",
"user": {
"_id": "54cf2fdb0364fac8bb99c08b",
"alias": "werner",
"first_name": "Werner",
"last_name": "Schneeberger"
},
"user_id": "54cf2fdb0364fac8bb99c08b"
}
POST /ratings -> neue Vorliebe anlegen
GET /ratings -> liefert alle vorhandenen Vorlieben zurück
POST /users -> neuen User anlegen
GET /users/<userid> -> liefert User zurück, inkl. seiner Vorlieben
POST /users/<userid>/ratings -> hinzufügen einer neuen Vorliebe
DELETE /users/<userid>/ratings/<rating-id> -> löscht eine Vorliebe
GET /users/<userid>/similar-users -> liefert eine Liste mit Usern, die ähnliche Vorlieben haben
JSON für rating:
{
"id": "vom-Server-vergeben",
"name": {
"en": "Cinema films",
"de": "Kinofilme",
"ru": "фильмкинолента"
}
}
Recommender (user/item) system using Mahout and MongoDB, wrapped by a REST service. https://github.com/nellaivijay/Mahout-MongoDB-Recommender