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Genetic algorithm for λ-optimal translation sequence of rough communication

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Journal of Systems Engineering and Electronics 2011年第4期22卷 609-614页

作者： hongkai wang yanyong guan Chunhua Yuan School of Mathematics University of Jinan Jinan 250022 R R. China

In rough communication, because each agent has a different language and can not provide precise communication to each other, the concept translated among multi-agents will loss some information, and this results in a less or rougher concept. With different translation sequences the amount of the missed knowledge is varied. The λ-optimal translation sequence of rough communication, which concerns both every agent and the last agent taking part in rough communication to get information as much as he （or she） can, is given. In order to get the λ-optimal translation sequence, a genetic algorithm is used. Analysis and simulation of the algorithm demonstrate the effectiveness of the approach.

关键词： rough sets rough communication λ-optimal trans-lation sequence genetic algorithm.

Simulated annealing algorithm for the optimal translation sequence of the jth agent in rough communication

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Journal of Systems Engineering and Electronics 2008年第3期19卷 507-512页

作者： wang hongkai guan yanyong Xue Peijun School of Sciences Univ. of Jinan Jinan 250022 P. R. China School of Mathematics and System Sciences Shandong Univ. Jinan 250100 P. R. China

In rough communication, because each agent has a different language and cannot provide precise communication to each other, the concept translated among multi-agents will loss some information and this results in a less or rougher concept. With different translation sequences, the problem of information loss is varied. To get the translation sequence, in which the jth agent taking part in rough communication gets maximum information, a simulated annealing algorithm is used. Analysis and simulation of this algorithm demonstrate its effectiveness.

关键词： rough sets rough communication translation sequence optimal simulated annealing algorithm.

Rough communication of crisp concept in fuzzy approximation spaces

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Journal of Systems Engineering and Electronics 2009年第2期20卷 327-331页

作者： wang hongkai guan yanyong Yu Zhaoxia School of Sciences Univ. of Jinan Jinan 250022 P. R. China

To study the problem of knowledge translation in fuzzy approximation spaces, the concept of rough communication of crisp set in fuzzy approximation spaces is proposed. In a rough communication of crisp set in fuzzy approximation spaces, the problem of uncertainty exists, for each agent has a different language and cannot provide precise communication to each other. By means of some concepts, such as CF rough communication cut, which is a bridge between fuzzy concept and crisp concept, cut analysis of CF rough communication is made, and the relation theorem between CF rough communication and rough communication of crisp concept is obtained. Finally, in order to give an intuitive analysis of the relation between CF rough communication and rough communication of crisp concept, an example is given.

关键词： rough sets fuzzy approximation space crisp concept rough communication CF rough communication cut

Attributes reduct and decision rules optimization based on maximal tolerance classification in incomplete information systems with fuzzy decisions

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Journal of Systems Engineering and Electronics 2010年第6期21卷 995-999页

作者： Fang Yang yanyong guan Shujin Li lei du School of Science University of Jinan Jinan 250022 P. R. China Department of Computer Qilu Normal University Jinan 250013 E R. China

A new approach to knowledge acquisition in incomplete information system with fuzzy decisions is proposed. In such incomplete information system, the universe of discourse is classified by the maximal tolerance classes, and fuzzy approximations are defined based on them. Three types of relative reducts of maximal tolerance classes are then proposed, and three types of fuzzy decision rules based on the proposed attribute description are defined. The judgment theorems and approximation discernibility functions with respect to them are presented to compute the relative reduct by using Boolean reasoning techniques, from which we can derive optimal fuzzy decision rules from the systems. At last, three types of relative reducts of the system and their computing methods are given.

关键词： rough sets information systems maximal tolerance class attribute reduct decision rules.

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粗集间的相似度量及其应用

计算机工程与应用 2004年第31期40卷 29-30页

作者：王洪凯管延勇史开泉山东大学数学与系统科学学院济南大学理学院济南250022

以粗隶属函数为工具,给出一种粗集间相似度量的数值算式,并将粗集间的相似度量应用于一类决策条件与结论的匹配问题上。最后通过一个实际例子说明这种方法的合理性。

关键词：粗集相似度量不确定性推理匹配

嫦娥五号着陆上升组合体GNC系统设计与实现

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中国科学：技术科学 2021年第7期51卷 763-777页

作者：于萍张洪华李骥关轶峰王立赵宇陈尧杨巍于洁王华强王志文王泽国王磊张晓文陈上上胡洪凯徐建北京控制工程研究所北京100190 空间智能控制技术国家级重点实验室北京100190

嫦娥五号(CE-5)着陆上升组合体实现了我国首次月球着陆并起飞的任务,着陆上升组合体的制导、导航与控制(GNC)系统是最重要的分系统之一.为了满足任务的重量要求、安全性要求和智能需求, GNC系统开展了轻量一体化设计,单一控制系统即可... 详细信息

嫦娥五号(CE-5)着陆上升组合体实现了我国首次月球着陆并起飞的任务,着陆上升组合体的制导、导航与控制(GNC)系统是最重要的分系统之一.为了满足任务的重量要求、安全性要求和智能需求, GNC系统开展了轻量一体化设计,单一控制系统即可满足着陆、起飞、交会的全过程任务需求;以分层控制器为核心构建了高速鲁棒视觉避障系统,有效地节约了燃料并确保了着陆安全;在上升任务中首次实现了月面定姿定位及轨道自主入射,而交会过程主要依靠轮控保证姿态稳定度;此外,系统还具有全功能冗余和自主管理能力,提升了故障检测率和故障隔离能力.本文介绍了着陆上升组合体GNC系统的设计要点和实现情况.

关键词：嫦娥五号着陆上升组合体 GNC 月球