这粗糙集理论于1982年由波兰数学家Z. Pawlak提出,它是一种对不完整数据进行分析、推理、学习、发现的新方法。本文在理论研究的基础上,将粗糙集理论应用在列车运行调整的实际案例中,说明粗糙集在决策简化过程中的实际应用意义。
本文首先研究了的粗糙集理论中的基本概念,讨论了粗糙集理论提出的背景、集合的等价关系、知识的分类观点及粗糙集的定义。然后研究了决策表约简中有关知识约简的方法,具体分为属性约简算法和属性值约简算法俩种。最后为了说明粗糙集理论的实际应用性,将粗糙集理论运用于列车运行调整的实际案例中,基于调度指挥管理系统(Dispatch Management Information Syatem,简称DMIS)中列车运行调整的经验数据,对列车运行调整的决策系统做了知识的约简,从而得出最终的列车运行调整的决策规则。论文为粗糙集理论和知识约简的应用提供了理论基础和可借鉴的实例。9189
关键词 粗糙集 多源信息 知识约简 决策毕 业 论 文 外 文 摘 要
Title Decision-making Knowledge Redact Of Multi-source Information Based On Rough Set Theory
Abstract The rough set theory was raised by the Polish mathematician Z.Pawlak,in 1982.It is a new method of incomplete data analysis,reasoning,discovery.In this paper, based on theoretical studies, the rough set theory is applied in the actual case of train operation adjustment, indicting the rough set theory have a practical significance in the simplified process of decision-making.
Based on the study of the rough set concept and decision table reduction, the rough set theory is applied in the actual case, in order to illustrate the practical application. By simplifying the data of the train operation adjustment in the Dispatch Management Information System, the final train operation adjustment decision rules are received. Paper provides a theoretical foundation and the reference for the future study of the rough set and knowledge reduction.
Keywords Rough Set Multi-information Knowledge Redact
Decision-making