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In order to effectively extract interaction features among vehicles in high-speed traffic scenarios, thus accurately predict the trajectories of dynamic obstacles, this paper proposes a multi-vehicle interaction trajectory prediction model using the coding-decoding framework based on the graph spatial-temporal attention mechanism. The vehicle-to-vehicle graph interaction field is established by combining the repulsive force field and the graph model, the node feature matrix and the adjacency feature matrix are used to characterize the dynamic interaction between the vehicle and the surrounding vehicles, and the deep spatial-temporal interaction features are extracted by the graph spatial attention and temporal polytope attention to obtain the graph spatial-temporal fusion coding features. The one-hot encoding of the longitudinal and lateral behavior intentions of the vehicles is concatenated with the encoding to achieve multimodal trajectory prediction for the target vehicles. Validation using the NGSIM dataset shows that, compared with 6 other models, the proposed model achieves the lowest RMSE and NLL values. Ablation experiments further validate the effectiveness of the graph interaction field, demonstrating that the model can significantly improve the accuracy of vehicle trajectory prediction.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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