C-OWL2:OWL2在云模型上的扩展

C-OWL2:OWL2 Extension on the Cloud Model

为了表示现实生活中广泛存在的模糊性和随机性不确定知识,引入云模型对OWL2语法进行了不确定扩展,提出不确定本体语言C-OWL2.这种方法不改变OWL2的现有结构,用OWL2的注释属性annotation进行语法扩展,并给出了相应概念、角色等的C-OWL2语法,最后举例说明其具体使用方法.研究结果表明,该方法将OWL2本体分为精确部分和不确定部分,并且当不考虑不确定部分时,不影响精确部分知识的表示和推理;该方法是对模糊描述逻辑功能的扩展,解决了OWL2语言只能处理精确本体的问题.

In order to describe uncertain knowledge in the objective world,including fuzziness and randomness,uncertain extension of OWL2 syntax was carried out by introducing cloud model,and an uncertain ontology language C-OWL2 was proposed.The method was proposed without changing the existing structure of OWL2,syntax extension was carried out by using the annotation property of OWL2,and the corresponding C-OWL2 description of concepts,roles,etc.was given.Finally,the specific methods of application were illustrated with examples.In this method,OWL2 ontology was divided into two parts,precise ontology and uncertain ontology.In addition,when ignoring the uncertain part,the expression and reasoning of precise knowledge is not affected.This method is an extension of the function of fuzzy description logic,and overcomes OWL2 language＇s limitation of dealing with the precise ontology only.