地理专家系统的知识表示与知识库组织

THE EXPRESSION OF KNOWLEDGE AND ORGANIZATION OF KNOWLEDGE BASE IN GEOGRAPHICAL EXPERT SYSTEM

介绍了地理专家系统的知识表示和知识库组织的基本原理和方法，并以水土保持专家系统为例，阐述了水土保持专家知识的分类分级方法，以及在水土保持专家系统中知识表示的基本规则和知识库中专家知识的组织方式．在知识获取机构中，系统提供了以辅助编辑手段为主，自然语言理解为辅的人机交互界面，从而简化了专家知识的录入过程，提高了系统的工作效率．

This paper presents basic approaches and principles for how to express knowledge and to organize the knowledge base in Geographical Expert System(GES),and taking Water and Soil Conservation Expert System (WSCES) as an example, the author expounds the methods of classification and gradation for Water and Soil Conservation Expert Knowledge (WSCEK), and discusses the basic rules of knowledge expression in the WSCES and the organization patterns of expert knowledge in the knowledge base. In the mechanism of knowledge capture the system provides the mutual interface for taking supplemental edit of knowledge as a primary and understanding of natural language as a complement between man and system. Therefore, the input process of expert knowledge is simplified greatly, and working efficiency of thesystem is promoted to a high degree.