Construction method and device of railway system model, equipment and medium

The invention discloses a railway system model construction method and device, equipment and a medium, and the method comprises the steps: inputting each piece of corpus data contained in a pre-constructed corpus into a pre-trained model, and obtaining at least one group of triple information corresponding to each piece of corpus data; generating a knowledge graph based on the triple information corresponding to all corpus data; searching a first node matched with the target demand from the knowledge graph, searching a second type of nodes and a third type of nodes associated with the first node from the knowledge graph, and obtaining an association relationship among all the nodes; acquiring node information corresponding to the third type of nodes; constructing a railway system model based on the first node, the second type of nodes, the third type of nodes, the incidence relation among all the nodes and the node information corresponding to the third type of nodes; through the mode, the labor cost and the