单线铁路技术改造决策专家系统

AN EXPERT SYSTEM FOR REFORM SCHEME DECISION OF SINGLE TRACK RAILWAY

本专家系统模仿铁路专家确定技术改造方案的复杂思维过程,利用多知识库、动态变量规则、元知识等知识表示方法,采用正反向两阶段联合推理方式和基于区间表示的不精确推理模型,拟定出可行的技术改造方案,并运用模糊数学的相似优先比理论,依据模糊总体水平概念确定推荐方案,最终完成全部决策。

This article presents how ESORR simulates the complex thinking process of railway experts in producing feasible reform schemes and making the final choice. ESORR utilizes knowledge representations of multi-rulebase, rules with dynamic variables and metaknowledge. It adopts forward-backward inexact inference strategy and an interval-valued-based uncertain reasoning model. Based on similar priority ratio theory of fuzzy logic, the article proposes the overall level concept of a fuzzy set for use with ESORR to decide a recommended scheme from feasible Ones.