Research Article
Prediction of Highway Tunnel Pavement Performance Based on Digital Twin and Multiple Time Series Stacking
Table 2
Extraction results of time series feature.
| Sample | IRI (m/km) | Maintenance status | Year | t−5 | t−4 | t−3 | t−2 | t−1 | t−1 | t−2 | t−3 | t−4 | t−5 |
| 0 | 2.84 | 2.23 | 3.14 | 3.37 | 2.83 | Natural decay | Overhaul | Minor repair | Natural decay | Overhaul | 2015 | 1 | 2.23 | 3.14 | 3.37 | 2.83 | 3.56 | Overhaul | Minor repair | Natural decay | Overhaul | Minor repair | 2016 | 2 | 3.14 | 3.37 | 2.83 | 3.56 | 3.77 | Minor repair | Natural decay | Overhaul | Minor repair | Natural decay | 2017 | 3 | 3.37 | 2.83 | 3.56 | 3.77 | 3.22 | Natural decay | Overhaul | Minor repair | Natural decay | Minor repair | 2018 | 4 | 2.83 | 3.56 | 3.77 | 3.22 | 3.20 | Overhaul | Minor repair | Natural decay | Minor repair | Minor repair | 2019 |
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