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Dynamic Spatial Reasoning Based on Action

  

  1. (1. College of Electronics and Information Science, Fujian Jiangxia University, Fuzhou 350108, China;
    2. School of Electrical Engineering and Automation, Xiamen University of Technology, Xiamen 361024, China)
  • Received:2017-09-28 Online:2018-04-03 Published:2018-04-03

Abstract: Dynamic spatial relations representation and reasoning have always been a focus of research in qualitative spatial reasoning. In this paper, the qualitative spatial relation of spatial primitive area is represented by rectangle relation. Some elaboration and extension are made for dynamic spatial system defined by Bhatt. Eight moving actions are defined for spatial entity, and the state transition graph and the state transition table are given under different actions for interval relation in spatial situation with multiple spatial entities. A tuple is used to formalize spatial situation, a basic missions is defined in dynamic spatial system, what the new spatial situation is when an entity takes action in the history situation. The method to solve the missions is given, and the limitation and shortages of the method are also presented. Furthermore, an application situation is given in this paper.

Key words: dynamic spatial system, spatial reasoning, spatial situation, action, state transition graph

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