气象灾害本体设计

提出了一种基于W3C标准的气象灾害本体化设计思路及其实现方法.在理解中国国家气象灾害预警体系中气象灾害的概念定义、命名规范、等级划分的基础上,提出用阶梯函数表达自然灾害指标,以—阶谓词逻辑的描述逻辑将气象灾害表达为基于气象要素的逻辑判断.随后,气象灾害的逻辑表达被应用于本体化设计中,以此建立起气象灾害分类树、等价公理、对象属性集合和数据属性集合,最终构建得到气象灾害本体知识库.在智能代理的作用下,地面观测气象数据被转化为气象灾害知识.基于本文构建的气象灾害本体知识库已应用于近实时气象灾害GIS分析图的网站发布,可初步实现气象灾害的自动化预警分析.

Ontology Design of Meteorological Disasters

An ontology representation of severe weather based on the W3C standard is proposed. According to the understanding of the concept definition, naming and categorization, the concepts of severe weather are logically represented with a step function expression and a first order logic expression. The logical representation is applied in the ontology design, in which the class tree, the class of equivalent axiom, and the collections of object properties and data properties are built up, as well as the ontology library. By the intelligent agent, the surface observation of weather data is transformed into knowledge of meteorological disasters. The ontology library of the severe weathers built with the proposed representation is tested in the near real time GIS mapping and Web posting system. The positive performance in the automatic warning analysis of severe weather proved the efficiency of the ontology representation.