Research Article
Random Forests-Based Operational Status Perception Model in Extra-Long Highway Tunnels with Longitudinal Ventilation: A Case Study in China
Table 2
Confusion matrix for in-tunnel operational status.
| Actual status | Perception status | Total | Lightly polluted () | Moderately polluted () | Heavily polluted () | Severely polluted () |
| Lightly polluted () | | | | | | Moderately polluted () | | | | | | Heavily polluted () | | | | | | Severely polluted () | | | | | |
| Total | | | | | |
|
|