Topology transformation-based multi-path algorithm for urban rail transit network
place - urban, place - asia, mode - rail, planning - methods
Multiple paths, Urban rail transit system, Topology transformation, 9-intersection model, Streamlined hierarchical topology network
In the large-scale rail network, it is easy to suffer from the dilemma of inefficiency for existing multi-path algorithms. The majority of research has been devoted to improving the search ability of multi-path algorithms. However, a few investigations focus on simplifying the network, and the research with a rigorous methodology is in early childhood. This study proposes a novel multi-path algorithm with compression network space to search the multiple paths. First, a bi-layer transformation operator is developed to streamline the topology structure of the rail network. Specifically, a first-layer transformation operator employs the station extraction function to simplify the type of stations. After that, a second-layer transformation operator with a path filter function is designed to eliminate the non-effective connection structure. Therefore, a streamlined hierarchical topology network (SHTN) is generated. Sequentially, for the four types of Origin–Destination pairs (ODs), K-shortest paths between an ODs are found by executing four matching mechanisms and the modified Yen’s algorithm. Finally, to verify the effectiveness and efficiency, a series of experiments run on the selected Beijing rail network. The results show that the proposed algorithm has obvious superiority or competitiveness over state-of-the-art algorithms.
Permission to publish the abstract has been given by Elsevier, copyright remains with them.
Hao, Y., Si, B., & Zhao, C. (2022). Topology transformation-based multi-path algorithm for urban rail transit network. Transportation Research Part C: Emerging Technologies, Vol. 136, 103540.