| Notion | Description |
| N | Number of nodes |
| F | Dimension of node attributes |
| S | Window size of historical traffic conditions |
| T | Window size of future traffic conditions |
| x | Node attributes that record historical traffic conditions |
| y | Real future traffic conditions |
| ลท G = (V, E, A) | Predicted future traffic conditions Graph defined by nodes, edges and adjacency matrix |
| L (·, ·) P (·, ·) | Graph structure learner Multi-step traffic condition predictor |