Table 1 Utility matrix
From: A systematic review and research perspective on recommender systems
| Â | Item 1 | Item 2 | Item 3 | Item 4 |
|---|---|---|---|---|
User 1 | 3 | – | 2 | – |
User 2 | – | 4 | – | 2 |
User 3 | 4 | – | 3 | – |
User 4 | – | 5 | 4 | 1 |
From: A systematic review and research perspective on recommender systems
| Â | Item 1 | Item 2 | Item 3 | Item 4 |
|---|---|---|---|---|
User 1 | 3 | – | 2 | – |
User 2 | – | 4 | – | 2 |
User 3 | 4 | – | 3 | – |
User 4 | – | 5 | 4 | 1 |