| Classification of Documents Based on the Structure of Their DOM Trees Recent countries visiting this post |  |
 | 9 | United States |
 | 1 | |
 | 1 | Austria |
 | 1 | China |
| Classification of Documents Based on the Structure of Their DOM Trees Recent countries visiting this post | |
| 9 | United States |
| 1 | |
| 1 | Austria |
| 1 | China |