共查询到18条相似文献,搜索用时 102 毫秒
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计算机仿真系统的可信度评估 总被引:6,自引:0,他引:6
相似理论是计算机仿真的基础,它在建立仿真模型、仿真可信性评估等方面都有很好的指导作用,在文中分析相似理论中的序结构定律的基础上,将序结构定律运用于计算机仿真系统的相似评定中,并给出了具体的算法。对如何评估仿真系统的相似度问题,在理论上作了一定的研究和探讨。 相似文献
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基于TFN-FAHP的舰船作战仿真系统可信度评估 总被引:1,自引:1,他引:1
龚琳 《计算机工程与设计》2010,31(12)
为了对舰船作战仿真系统的可信度进行科学的评估,提出了基于TFN-FAHP的舰船作战仿真系统可信度评估的方法和具体步骤.首先分析影响舰船作战仿真系统可信度评估的具体指标因素,再将三角模糊数的概念与其基本运算应用在层次分析法之中,同时建立各个相关指标因素权重集,然后应用模糊综合评估法对对舰船作战仿真系统的可信度进行全面综合的评价,实验结果表明,该评估方法的应用解决了传统模糊层次分析法中人的主观判断模糊性的缺点,使评估结果更加趋于合理,是一个实用,有效的方法. 相似文献
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AHP-Fuzzy在仿真系统可信度综合评价中的应用 总被引:9,自引:0,他引:9
该文在介绍层次分析法(AHP)和模糊评价(Fuzzy)两种系统评价理论和方法的基础上,把两种方法结合起来,对仿真系统可信度评价进行分析。根据仿真系统可信度的特点,从概念模型、仿真模型、软件模型、结果分析等因素出发,建立系统可信度评价指标体系。通过计算影响仿真系统可信度评价的各因素权重,并应用AHP—Fuzzy来评价系统可信度,进而提出了多级综合评价方法。实例证明,该方法具有两种方法的优点,而且能较好地保证评价结果的客观性。 相似文献
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基于AHP-Fuzzy的航电综合化仿真系统可信度评估 总被引:2,自引:0,他引:2
朱岩 《计算机测量与控制》2008,16(3):404-406
航电综合化仿真系统的可信度研究越来越成为航电综合化仿真方面的一个重要研究课题;采用层次分析法和模糊综合评判相结合的方法,对航电综合化仿真系统的可信度评判进行了初步的探讨;针对航电综合化仿真系统的具体特点,用层次分析法建立了航电综合化仿真系统的层次模型并确定各子系统的权重,并利用模糊综合评判方法对整个系统的可信度进行评判,充分体现评价因素和评价过程所固有的模糊性,比一般的评价打分等方法更符合客观实际,从而使得评价结果可信、可靠。 相似文献
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基于MATLAB(SIMULINK)的模糊控制系统计算机仿真 总被引:12,自引:1,他引:12
将MATLAB的FUZZY TOOLBOX中的模糊推理系统(Fuzzy Interence System)编辑器与SIMULINK有机结合起来,充分利用它们各自的优势,方便地实现了模糊控制系统(FCS)的计算机仿真。从而克服了对复杂控制律无法直接应用SIMULINK进行仿真的缺点,了SIMULINK的应用范围。 相似文献
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基于模糊粗糙集的因素权重分配方法 总被引:6,自引:0,他引:6
基于模糊集与粗糙集的融合,提出一种对多因素分配权重的简单方法.该方法与传统的权重分配方法有明显的区别.首先利用模糊聚类分析对数据进行聚类,并提取最佳聚类;然后应用粗糙集中属性的重要程度对各个特征因素进行客观地分配权重.实例分析验证了所提出方法的有效性. 相似文献
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Based on the credibility distributions which are analytic expressions of fuzzy variables, Fourier spectrum of credibility distribution for fuzzy variable, a useful mathematical analytic tool dealing with fuzzy variables, is introduced. Then several elementary properties of Fourier spectrums of credibility distributions for fuzzy variables are studied. Furthermore some relations between credibility distributions and Fourier spectrums such as inversion formula and uniqueness theorem are established. 相似文献
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Roughness based on fuzzy ideals 总被引:1,自引:0,他引:1
B. Davvaz 《Information Sciences》2006,176(16):2417-2437
The theory of rough set, proposed by Pawlak and the theory of fuzzy set, proposed by Zadeh are complementary generalizations of classical set theory. Many sets are naturally endowed with two binary operations: addition and multiplication. One concept which does this is a ring. This paper concerns a relationship between rough sets, fuzzy sets and ring theory. It is a continuation of ideas presented by Kuroki and Wang [N. Kuroki, P.P. Wang, The lower and upper approximations in a fuzzy group, Inform. Sci. 90 (1996) 203-220]. We consider a ring as a universal set and we assume that the knowledge about objects is restricted by a fuzzy ideal. In fact, we apply the notion of fuzzy ideal of a ring for definitions of the lower and upper approximations in a ring. Some characterizations of the above approximations are made and some examples are presented. 相似文献
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Simulation Cloud can help users to carry out the simulation tasks in various stages quickly and easily by renting instead of buying all the needed resources, such as the computing hardware, simulation devices, software, and models. A monitoring system is necessary, which can dynamically collect information about the characteristics and status of resources in real time. In this paper, we design a Simulation Cloud Monitoring Framework (SCMF), which is a Monitoring Framework based on Simulation Cloud. The main functions of SCMF include: 1. Collecting performance information of Simulation Cloud (including physical resources and virtual resources). 2. Processing the collected performance information, providing ranking information about resource consumption as the customized service to service layer. 3. Detecting abnormal behaviors on Simulation Cloud in real time.The SCMF is based on hierarchical design. It consists of Root Monitoring Node (RMN), Federation Monitoring Node (RMN), and Main Monitoring Node (MMN). There is only one RMN in SCMF. It is responsible for collecting metadata about Simulation Cloud. For robustness, there are several FMNs in a federation. One is primary FMN and others are backup FMNs. MMN is implementing on every host in Simulation Cloud., MMN is responsible for collecting performance information about the host and virtual nodes. In the paper, it designs Sequence-Bucket strategy, which supports quick response for ranking information about resource consumption. It also designs two strategies: Rank-FMN (Federation Monitor Node) strategy and Huffman-Like Strategy. Huffman-Like Strategy combines small federations to reduce total consumption of SCMF, while Rank-FMN strategy is a load balancing strategy, which relieves the bottleneck of FMNs and spreads the loads equally among FMNs. The characteristics of SCMF are real-time, scalability, robustness, light weight, manageability, and archivability. Meanwhile, we design evaluation models for SCMF, which can provide quantitative results of monitoring accuracy and monitoring cost. The simulation results show that SCMF is accurate, low cost and can response in real-time. 相似文献