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本体是研究客观事物的系统化表达,即研究主观认识与客观存在之间的关系。在知识工程中,主要研究如何描述知识更加准确,使其更加贴近知识的本来面目。本文提出层次式本体模型,按照知识的通用程度,将本体划分为建模元数据层、顶层本体层和子领域本体层,各层的元素之间具有清晰的、明确的语义关系,从而具有更加丰富和强大的知识表达和建模能力。在领域工程中,层次式本体模型可以用于领域知识建模,并在领域分析和领域设计之间建立规则联系。本文以MES领域为背景,应用上述方法作研究。
Ontology is the systematic expression of the study of objective things, that is, the study of the relationship between subjective knowledge and objective existence. In knowledge engineering, the main research on how to describe knowledge is more accurate and make it closer to the true nature of knowledge. In this paper, a hierarchical ontology model is proposed. According to the common level of knowledge, the ontology is divided into modeling metadata layer, top ontology layer and subdomain ontology layer. The elements of each layer have clear and definite semantic relations and thus have more abundant And powerful knowledge expression and modeling skills. In domain engineering, a hierarchical ontology model can be used to model domain knowledge and establish a regular relationship between domain analysis and domain design. In this paper, MES field as the background, the application of the above methods for research.