| Reducing the Cold-Start Problem in Content Recommendation through Opinion Classification Recent countries visiting this post |  |
 | 8 | United States |
 | 5 | Brazil |
 | 1 | Germany |
 | 1 |
| Reducing the Cold-Start Problem in Content Recommendation through Opinion Classification Recent countries visiting this post | |
| 8 | United States |
| 5 | Brazil |
| 1 | Germany |
| 1 |