| Simultaneous Feature Selection and Classifier Training via Linear Programming: A Case Study for Face Expression Recognition Recent countries visiting this post |  |
 | 5 | United States |
 | 3 | |
 | 2 | China |
 | 1 | Germany |
| Simultaneous Feature Selection and Classifier Training via Linear Programming: A Case Study for Face Expression Recognition Recent countries visiting this post | |
| 5 | United States |
| 3 | |
| 2 | China |
| 1 | Germany |