【作者】 王恺；

【导师】 曾伟；

【作者基本信息】 华中科技大学 ， 系统工程， 2005， 硕士

【摘要】 近20 年来,智能决策支持系统(IDSS)的应用研究取得了巨大的进步,并且在咨询、诊断、预测、设计和管理等领域得到了广泛的应用。随着internet/intranet 技术的不断发展和人工智能技术的兴起,IDSS 也获得了更为广阔的发展空间。为解决智能决策支持系统研究中知识表示和知识推理的困难,本文在介绍了基于案例推理的相关理论、工作机制和推理中所存在的问题的基础上,将基于案例推理理论与决策支持系统相结合,提出了基于案例推理的决策支持系统模型。重点阐述了模型中的案例表示和案例检索两项关键技术,提出了用XML 语言表示案例的方法和自学习案例检索模型。基于XML 的案例表示可以解决与同一领域不同CBR 系统或其他应用系统之间的信息流重组,从而可以实现分布式的案例存储与检索,异构系统间的信息整合; 自学习案例检索模型则缓解了案例检索时间随案例数目呈线性增长的问题。本文结合作者的科研实践,详细分析了龙滩工程物资调运的体系结构,并详细论证了将基于XML 的案例推理技术应用到龙滩南丹转运站物资调运的可行性,从而将基于XML 的案例推理决策支持系统引入到南丹转运站日调度计划的制定中。作为应用研究,本文采用J2EE 的思想进行系统总体设计,并对业务过程和业务实体进行了分析,最终在J2EE 平台上实现了转运站日调度计划的案例推理决策支持原型系统。更多还原

【Abstract】 In the past 20 years, the application of Intelligent Decision Support System (IDSS) has made enormous progress and been widely used in domains of consultation, diagnosis, prediction, design, and management. And IDSS has got wider space with the continuous development of internet/intranet technology and flourish of the artificial intelligence technology. In order to solve the difficulties of knowledge expressing and knowledge reasoning in IDSS, an IDSS model, which combines case-based reasoning with Decision Support System (DSS), is proposed after introducing theories, working mechanism and existing problem of case-based reasoning (CBR). Subsequently the thesis focuses on case presentation and case retrieval, two key technologies in CBR. Representing cases with XML meets the need of the integration between different CBR systems and other application systems. Thus it is easy to realize information integration, distributed case store and search. Then a retrieval model of introspective learning is given to decrease the time of case retrieval, which can vary with the number of cases in case base obviously. Combining the author’s research practice, the thesis analyzes the system structure of material dispatching in Longtan project in detail, and points out that scientific daily plan of Nandan is the crucial factor to ensure the progress of Longtan project. Then case-based reasoning is used to make daily dispatching plan of Nandan after the feasible demonstration of case-based reasoning which is applied in material dispatching of Longtan project. As an application research, operation processes have been analyzed with the thought of J2EE. Then a soft prototype system of DDPIDSS (Daily Dispatching Plan Intelligent Decision Support System), based on J2EE, is fulfilled.更多还原