挖掘机的液压系统设计(6)

挖掘机的液压系统设计

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The difficulty of analyzing and processing for spatial data becomes more and

more complicated, because many uncertain spatial relations are born with position attributes of spatial objects, such as spatial topology relations, spatial orientation relations, spatial distance relations and the combinations among them. And these spatial relations are always hidden in spatial data by the undisclosed form. SDMKD (Spatial data mining and knowledge discovery) is emerging when abundant of spatial data and scarce of spatial knowledge coexist, which has become the hot topic of data mining area.

Keywords：Spatial data mining；Spatial clustering；Database；