| Group Bitmap Index: A Structure for Association Rules Retrieval Recent countries visiting this post |  |
 | 7 | United States |
 | 3 | Russian Federation |
 | 3 | Europe |
 | 1 | Germany |
 | 1 |
| Group Bitmap Index: A Structure for Association Rules Retrieval Recent countries visiting this post | |
| 7 | United States |
| 3 | Russian Federation |
| 3 | Europe |
| 1 | Germany |
| 1 |