地学专家系统的知识化数据模式研究  

Research on Intellectual Data Model of Geo-expert System

作　　者：付炜[1,2] 邢广忠[1] 

机构地区：[1]燕山大学信息学院通信与电子工程系,秦皇岛066004 [2]新疆大学电子科学与信息工程学院

出　　处：《地球信息科学》2006年第1期61-66,78,共7页Geo-information Science

基　　金：河北省教育厅自然科学基金项目"资源环境遥感信息反演机理研究"(批准号:2003114)

摘　　要：介绍了地学专家系统的知识化数据结构的设计原理与实现方法,采用知识表示的框架网络结构描述地理环境的实体单元,将各级专家知识的表示以指针链接,形成了由知识到语义的框架网络。采用了基于知识的扩展R-F 关系数据模式进行专家知识的表示,并讨论了系统知识库的组织结构和推理机的设计原理。该数据结构可以实现地理实体及其相互关系的完整性描述,并使系统知识库的操作简便易行,保证了推理机的实现。以乌鲁木齐河流域为试验区,阐述了流域土地合理利用规划决策专家知识的表示方法,以及专家知识表示的基本规则和系统专家知识的组织方式。此外,还讨论了系统推理机推理规则的设计原理与组织方法及推理算法。This paper presents design principle and realizable approach for Intellectual Data Structure of Geographic Expert System. With the frame network structure of knowledge, the author describes the entity units of geo-environment, and links the expression of expert knowledge at different levels with the pointer so that it becomes the frame network from knowledge to semantics. Also, the author expresses expert knowledge with extended R-F relational model based on intelligence, and discusses organization structure of knowledge base in the system and design principle of inference engine. The data structure can be used to realize an integrated description for geographic entities and their interrelations, and the knowledge base of the system can be operated simply and easily with the model, and therefore, the inference mechanism can he assuredly realized. Taking Urumqi river basin as a test region, the author expounds expression approach of expert knowledge for planning and decision expert system of land rational use in the watershed, as well as the basic rules of expert knowledge expression and the organization models of expert knowledge in the system. Furthermore, the author also discusses the design principles and organization method of inference rules and the inference algorithms of inference engine in the system.

关 键 词：知识表示 框架网络结构 知识化数据模式 

分 类 号：TP182[自动化与计算机技术—控制理论与控制工程]