基于UML类图的模糊时空数据建模

Fuzzy spatiotemporal data modeling with UML class diagram

模糊性广泛存在于时空应用领域,现有的时空数据模型缺乏描述和表达模糊时空对象内在机制和语义关系的能力。通过研究模糊时空数据语义,给出了模糊时空数据模型的形式化定义,在此基础上对UML类图进行扩展,提出一种模糊时空UML数据模型,并用例子说明了模糊时空数据模型的可用性。

Fuzziness widely exists in many spatio-temporal applications. The existing spatio-temporal data models lack the ability to describe and represent the internal mechanisms or semantic relation of fuzzy spatio-temporal objects. After investigating the semantics of fuzzy spatio-temporal data,this paper proposed a formal definition about fuzzy spatio-temporal data model.On this basis,it extended the UML data model to express fuzzy temporal and spatial data. Finally,an example demonstrates the potential usefulness of the proposed method.