A Unified Model for Multi-Task Drone Routing in Post-Disaster Road Assessment

• URL: http://arxiv.org/abs/2510.21525v1
• Date: Fri, 24 Oct 2025 14:48:57 GMT
• Title: A Unified Model for Multi-Task Drone Routing in Post-Disaster Road Assessment
• Authors: Huatian Gong, Jiuh-Biing Sheu, Zheng Wang, Xiaoguang Yang, Ran Yan,
• Abstract summary: Post-disaster road assessment (PDRA) is essential for emergency response, enabling rapid evaluation of infrastructure conditions.<n>Drones provide a flexible and effective tool for PDRA, routing them in large-scale networks remains challenging.<n>This study proposes a unified model (UM) for drone routing that simultaneously addresses eight PDRA variants.
• Score: 14.07560120879767
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Post-disaster road assessment (PDRA) is essential for emergency response, enabling rapid evaluation of infrastructure conditions and efficient allocation of resources. Although drones provide a flexible and effective tool for PDRA, routing them in large-scale networks remains challenging. Traditional optimization methods scale poorly and demand domain expertise, while existing deep reinforcement learning (DRL) approaches adopt a single-task paradigm, requiring separate models for each problem variant and lacking adaptability to evolving operational needs. This study proposes a unified model (UM) for drone routing that simultaneously addresses eight PDRA variants. By training a single neural network across multiple problem configurations, UM captures shared structural knowledge while adapting to variant-specific constraints through a modern transformer encoder-decoder architecture. A lightweight adapter mechanism further enables efficient finetuning to unseen attributes without retraining, enhancing deployment flexibility in dynamic disaster scenarios. Extensive experiments demonstrate that the UM reduces training time and parameters by a factor of eight compared with training separate models, while consistently outperforming single-task DRL methods by 6--14\% and traditional optimization approaches by 24--82\% in terms of solution quality (total collected information value). The model achieves real-time solutions (1--10 seconds) across networks of up to 1,000 nodes, with robustness confirmed through sensitivity analyses. Moreover, finetuning experiments show that unseen attributes can be effectively incorporated with minimal cost while retaining high solution quality. The proposed UM advances neural combinatorial optimization for time-critical applications, offering a computationally efficient, high-quality, and adaptable solution for drone-based PDRA.

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