Describe the logical relations among mining survey objects using quotient topological space
Liang Xiao, Gis Enterprise · Meitan xuebao · 2002
A suitable data model and data structure make mining survey objects maintained and operated easier. The mining survey objects are divided into many sorts in this paper and defined. The objects and relations among them are described by a triple (X,f,S) . This paper proved that control and transfer relations among the survey objects are partially ordered relations. To solve different problems in our domain, we study the survey objects quotient set, the domain is simplified and a larger granularity of the domain is got. Then the problem (X,f,S) is transferred into a new problem ,,. In order to find relations among the different granularities, we wish that was also partially ordered relation. In (X,S) , we define u(x)={y|xy,y∈X}.The element u(x)is a mining survey object which is controlled or transferred by x . Let P={u(x)|x∈X}, then P is a family of the mining survey objects. By P we can construct an order topology of X , denoted as (X,S) . Now, we get a topological space (X,S) from partially ordered space (X,S) . Let be quotient set, then the quotient topological space of (X,S) is ( ,). This paper attempts to use the properties of the quotient topological space to analyze and describe the mining survey objects. Finally, an actual example is given to show the data model's possible applications.