Computing direction similarity based on two-layer domain graph

A quantitative calculation model for the direction similarity of composite spatial objects is introduced in this paper. First, it quantifies the compound expression model, defines the distance between the domain map and direction slices suitable for the model; then, it uses the decomposition idea to decompose the composite spatial object, decompose the reference target, and the source target as a whole; finally, it uses the balanced transmission problem. The minimum element method is used to solve the distance between the direction relationship matrix of the compound expression model, and finally the similarity between the composite spatial objects is obtained. The directional similarity experiment of composite spatial objects at different scales proves the feasibility, and the results are in line with human cognition.