View-angles of spatial data mining

This paper proposes a view-angle of spatial data mining to match the various demands on spatial data mining.Describing the various demands from different users under different spatial conditions,the view-angles of spatial data mining is to discover the knowledge with various granularities from amounts of spatial data by using a certain mining algorithms.First,the view-angle of spatial data mining is defined within its intension and extension.Second,the view-angle based algorithms are presented.Finally,as a case study, the techniques are applied to mine Baota landslide-monitoring database.The results are satisfactory.