时态粒度约束下的时态元素定性关系探讨

Research on qualitative relationship among temporal elements with temporal granularities constraints

针对时态粒度约束下的时态元素之间的定性关系,引入向量空间思想,将时态粒点间的关系转换为向量空间中的运算。提出时态粒点的向量判别方法以比较两个时态粒点的先后关系,通过粒度缩放操作探讨了时态粒区之间的关系、时态粒点与时态粒区之间的定性关系,对时态数据库、时态知识推理、时态数据挖掘等时态应用研究领域起到了良好的基础支持作用。

Qualitative relationship among temporal elements with the constraints of temporal granularity, is one of the most fundamental issues. The vector space is introduced to solve the complexity of the temporal relationship with the constraints of temporal granularity. Thus, the relationship between two temporal points can be converted to the operation in the vector space. Furthermore, the granularity scaling operators are used to analyze the relationship between different temporal elements, such as temporal point, temporal interval. The proposed method has a fundamental support to the temporal research and applications such as temporal database, temporal knowledge reasoning and temporal data mining.