4.1.3. Bus Network

The idea of establishing a bus station model is to use a docking station as a node. Since the geographical location of the bus stop was not considered, the cyclic operation of the bus line was ignored in the statistical process, and the first and last bus stops on each line were not connected. The shortest path length between the two nodes represents the minimum number of bus stops that pass from the point of departure to the destination.

According to the above modeling method, all stations were numbered, and 0/1 adjacency matrix of 2808 × 2808 was generated using Python, and UCINET and Netdraw drew the network topology map of the bus stations. Then, we performed the centrality analysis, selected "centrality measures" in the menu of "analysis", and chose "degree" when setting the node size. The connection represents the direct connection between the sites. The size of the point reflects the importance of the node. The final bus network is visualized in Figure 1.

**Figure 1.** Topology of Xi'an bus network.

### *4.2. Evaluation Results of Transportation Network Property*

This part uses complex network theory and UCINET, and takes the Xi'an bus station network as an example to calculate and analyze the characteristic and topological properties of the network.
