Recommendation System
Loss Function of Training and Test
Output of the code M
[[5. 4. 0. ... 5. 0. 0.]
[3. 0. 0. ... 0. 0. 5.]
[4. 0. 0. ... 0. 0. 0.]
...
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]]
...............................................................................................................................
Otraining
[[1. 1. 0. ... 1. 0. 0.]
[1. 0. 0. ... 0. 0. 1.]
[1. 0. 0. ... 0. 0. 0.]
...
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]]
..................................................................................................................................
Otest
[[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
...
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]
[0. 0. 0. ... 0. 0. 0.]]
.................................................................................................................................................
W_movies
['data' 'ir' 'jc']
............................................................................................................................................
W_users
['data' 'ir' 'jc']
............................................................................................................................................
Number of 0 in M = 1486126
Shape of M = (943, 1682)
Number of 0 in Training = 1506126
Number of 0 in Test = 1566126
Shape of Training = (943, 1682)
Shape of Test = (943, 1682)
Users Shape = (943, 943)
Movies Shape = (1682, 1682)
Number of data samples: (40000.0,)
Number of training samples: (40000.0,)
Number of training + data samples: (80000.0,)
(943, 943)
(943,)
(943, 1682)
[268.17402035 110.0910939 99.37433058 77.97280296 75.07883397
72.27461596 70.24918496 64.19805813 62.87750106 61.96979953]
Initial User Shape (943, 10)
Initial Items Shape (1682, 10)
Original Training Matrix Odata*M
(943, 1682)
Reconstructed Training Matrix initial_W.initial_H.T
Final Matrix of Users and Movies
............................................................................................................................................
Recommend How many top Movies for user: 4
User Id: 65
We will recommend these movies to the user
[197 Nikita (La Femme Nikita) (1990)
355 Client, The (1994)
518 Treasure of the Sierra Madre, The (1948)
185 Blues Brothers, The (1980)
Name: 1, dtype: object]
............................................................................................................................................
Mean of all Ratings: 3.1963606
Shape of final Matrix: (943, 1682)