From the basic conceptions of SDM,introduces characteristics of spatial data,spatial neighborhood relation and its operation. Also discusses typical spatial data mining methods based on spatial neighborhood relation.
Delaunay Triangulation, which can represent neighborhood relation between spatial objects expediently, is a triangle partition according to the maximizing smallest angles rule.
In this paper, spatial neighborhood relation is represented by Delaunay Triangulation, Based on that, methods of spatial neighborhood relation reasoning are presented.
In this paper, the concept of spatial neighborhood relation is discussed, spatial neighborhood relation is represented by Delaunay triangulation. Based on these, methods of spatial neighborhood relation reasoning are presented.
Based on the idea of fuzzy logic, it is proved that (IX, ∧a,∨a,)is an α-F lattice and the fuzzification of fuzzy topological space (IX,δ) is introduced by using a new neighborhood relation for fuzzy subsets.
DEM(Discrete Element Method) is a newly developed and prospective numerical simulation method. However, it takes tremendous time to determine the neighborhood relation among elements.
Based on the idea of fuzzy logic, it is proved that (IX, ∧a,∨a,)is an α-F lattice and the fuzzification of fuzzy topological space (IX,δ) is introduced by using a new neighborhood relation for fuzzy subsets. The idea of open degree function is given and it is proved that τa is an F topology. The new idea of neighborhood and remote neighborhood of fuzzification topological space and their relations are studied.
DEM(Discrete Element Method) is a newly developed and prospective numerical simulation method. However, it takes tremendous time to determine the neighborhood relation among elements. In this paper an improved algorithm (Region Method) is introduced to reduce the time. The analysis of the complication of the algoritm and the comparison with the previous method (Window Method) are also presented. It illustrates the obvious advantage of the new algorithm.
The article elaborates contemporary socilogical theories and methods of urban community. Firstly, it discusses the conception of community, the development and characteristics of the definition of community. Secondly, it expounds main sociological theories and methods of urban community since the Chicago School. Of the two most influential theories, one dimension is the research on neighborhood relation in the community and the social network, which includes"the community abandonment", "the comm...