A Hybrid Recommender System for Gaussian Mixture Model and Enhanced Social Matrix Factorization Technology Based on Multiple Interests

Table 1

An example of user-item rating matrix.

User	Item 1	Item 2	Item 3	Item 4	Item 5
u1	2.5	—	5	2.5	—
u2	—	3	—	3	3
u3	1	—	2	1	—
u4	—	5	—	5	5
u5	1.5	—	3	1.5	—
u6	—	4	—	4	4