基于时变网络的多粒度时空对象关系演化过程表达与建模

发布时间：2018-02-10 22:16

  本文关键词： 时变网络 多粒度时空对象关系 演化过程　出处：《地球信息科学学报》2017年09期 　论文类型：期刊论文

【摘要】：对空间事物的表达与研究模型主要针对多粒度时空数据本身的描述,而不是描述多粒度时空对象的相关性。多粒度时空对象是一种新的时空对象表达方法,其中时空对象关系的演化过程是一种抽象的复杂的网络的过程。本文在多粒度时空对象表达的基础上,对其演化过程进行形式化定义,提出以时变网络的方法构建初步的关系演化过程模型。通过对基于时间切片的退耕还林演化过程关系的描述与表达,形成动态实时变化的网络模型,从而抽象表达退耕还林过程中的对象关系的演化过程。应用时变网络明确多粒度时空对象关系的演化过程,并对演化过程进行初步的表达和建模,可以使对象关系变化更加清晰化,提高其层次性和效率性,为今后研究多粒度时空对象关系变化规律奠定基础。
[Abstract]:The representation and research model of spatial objects is mainly focused on the description of multi-granularity spatio-temporal data itself, rather than describing the correlation of multi-grained spatio-temporal objects, which is a new representation method of spatio-temporal objects. The evolution process of spatio-temporal object relationship is an abstract and complex network process. Based on the representation of multi-granularity spatio-temporal objects, the evolution process is formally defined in this paper. This paper presents a preliminary relational evolution process model based on time-varying network, and forms a dynamic and real-time changing network model by describing and expressing the evolutionary process of returning cropland to forest based on time slice. Therefore, the evolution process of object relationship in the process of returning farmland to forest is expressed abstractly. The evolution process of multi-granularity spatio-temporal object relationship is defined by time-varying network, and the evolution process is expressed and modeled preliminarily. It can make the change of object relation more clear, improve its hierarchy and efficiency, and lay a foundation for the future study of the changing law of multi-granularity spatio-temporal object relationship.
【作者单位】： 南京师范大学地理科学学院;南京师范大学虚拟地理环境教育部重点实验室;江苏省地理信息资源开发与利用协同创新中心;
【基金】：国家重点研发计划项目(2016YFB0502300) 国家自然科学基金项目(41571379)
【分类号】：P208
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本文编号：1501567