Database Reference
In-Depth Information
moviesForUser.sortBy(-_.rating).take(10).map(rating =>
(titles(rating.product), rating.rating)).foreach(println)
You will see the following output displayed:
(Godfather, The (1972),5.0)
(Trainspotting (1996),5.0)
(Dead Man Walking (1995),5.0)
(Star Wars (1977),5.0)
(Swingers (1996),5.0)
(Leaving Las Vegas (1995),5.0)
(Bound (1996),5.0)
(Fargo (1996),5.0)
(Last Supper, The (1995),5.0)
(Private Parts (1997),4.0)
Now, let's take a look at the top 10 recommendations for this user and see what the titles
are using the same approach as the one we used earlier (note that the recommendations are
already sorted):
topKRecs.map(rating => (titles(rating.product),
rating.rating)).foreach(println)
The output is as follows:
(To Die For (1995),5.931851273771102)
(Usual Suspects, The (1995),5.582301095666215)
(Dazed and Confused (1993),5.516272981542168)
(Clerks (1994),5.458065302395629)
(Secret Garden, The (1993),5.449949837103569)
(Amistad (1997),5.348768847643657)
(Being There (1979),5.30832117499004)
(Citizen Kane (1941),5.278933936827717)
(Reservoir Dogs (1992),5.250959077906759)
(Fantasia (1940),5.169863417126231)
We leave it to you to decide whether these recommendations make sense.
