| Development of Recommender Systems Using User Preference Tendencies: An Algorithm for Diversifying Recommendation Recent countries visiting this post |  |
 | 23 | United States |
 | 4 | |
 | 1 | Japan |
 | 1 | Indonesia |
| Development of Recommender Systems Using User Preference Tendencies: An Algorithm for Diversifying Recommendation Recent countries visiting this post | |
| 23 | United States |
| 4 | |
| 1 | Japan |
| 1 | Indonesia |