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随着互联网和社交媒体的快速发展,我国的经济活动对网络依赖性逐步增强,涉及到资金和财产的网络活动加剧,对用户身份进行认证的需求变得更加迫切。因此,提出了一种将层次分析法(Analytic Hierarchy Process)和灰色关联分析(Grey Relation Analysis)结合使用的用户身份可信评价方法(Analytic Hierarchy Process-Grey Relation Analysis,AHP-GRA),以现有的权威身份认证提供商提供的身份信息为原始输入,个体用户后续输入的身份属性信息通过属性聚类及相似度计算进行评分,使用层次分析法和灰色关联分析将各条属性可信评价进行多层次关联决策分析,并得到用户身份的可信评价。 相似文献
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组网雷达的抗干扰能力是整体作战效能的一个重要指标,然而其具有参数的不确定性,应用灰色层次分析法对组网雷达的抗干扰效能进行综合的评估。通过建立层次评价指标体系,采用专家评分法来确定评估指标权重,运用灰色聚类来评估模型,计算出组网雷达抗干扰效能的代数值。研究结果表明,该方法具有客观性,能够有效地降低人为因素的影响,为决策者提供比较可靠的数量依据。 相似文献
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基于灰色理论的机载预警雷达效能评估技术 总被引:2,自引:0,他引:2
以机载预警雷达为研究对象,提出基于灰色系统理论的效能评估模型。采用层次分析法建立多层次效能评估指标体系结构,确定评估体系指标权重。通过专家对指标评分,建立评估指标值矩阵,运用灰色系统理论进行计算,给出4种型号主要机载预警雷达效能评估代数值。结果表明,利用该方法对机载预警雷达效能进行评估是可行的,评估结果也可为发展机载预警雷达提供一定的借鉴。 相似文献
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The situation is constructed when the tests are considered as events and the spare test equipments are considered as strategies. The model of grey situation decision for the test equipment selection and deployment (TESD) is founded. Through analyzing each decision objectives, their relative weights are calculated via analytic hierarchy process (AHP). The grey situation effect matrix under each objective is computed so that the comprehensive effect measure matrix can be obtained when all of the objectives are traded off by their weights. Finally, the decision-maker can select the optimal situations by the value of the measures and such situations form the overall concept for TESD. The paper combines the AHP with grey situation decision to select and deploy the test equipments optimally. Our experimental results show that the proposed method is effective and efficient. 相似文献
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The increasing demand for interactive mobile multimedia service is causing the integration of 3rd generation (3G) cellular systems and wireless broadcast systems. The key challenge is to support data dissemination with low response time, request drop rate, and the unfairness of request drop. This article proposes a novel scheduling algorithm called DAG (on-demand scheduling utilizing analytic hierarchy process (AHP) and grey relational analysis (GRA)), which takes multiple factors-waiting time, number of active requests, deadline-into consideration, and models the data scheduling process as a multiple factors' decision-making and best option-selecting process. The proposed approach comprises two parts. The first part applies AHP to decide the relative weights of multiple decision factors according to user requests, while the second adopts GRA to rank the data item alternatives through the similarity between each option and the ideal option. Simulation results are presented to demonstrate that DAG performs well in the multiple criterions mentioned above. 相似文献
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对于由雷达探测、火力控制和攻击单元3个子系统组成的一类超近程防空武器拦截系统,解决拦截系统攻击单元分布优化设计的问题,是提高拦截系统效率的关键,而解决攻击单元优化设计的问题,首先要优选分布设计方案。对于攻击单元可能的6种分布设计方案:中心布置、内四角布置、中心加内四角布置、外四角布置、中心加外四角布置、圆周布置,进行灰色关联分析,结合层次分析方法,得到中心加内四角布置方案为优选方案的结论。将灰色关联分析与层次分析方法结合,进行分布方案的评选,克服了靠专家对样本指标进行赋值的主观性,而且简单、有效。 相似文献
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In communication networks with policy-based Transport Control on-Demand (TCoD) function, the transport control policies play a great impact on the network effectiveness. To evaluate and optimize the transport policies in communication network, a policy-based TCoD network model is given and a compre-hensive evaluation index system of the network effectiveness is put forward from both network application and handling mechanism perspectives. A TCoD network prototype system based on Asynchronous Transfer Mode/Multi-Protocol Label Switching (ATM/MPLS) is introduced and some experiments are performed on it. The prototype system is evaluated and analyzed with the comprehensive evaluation index system. The re-sults show that the index system can be used to judge whether the communication network can meet the ap-plication requirements or not, and can provide references for the optimization of the transport policies so as to improve the communication network effectiveness. 相似文献
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介绍了一种用于通信网络的APON无源光网络系统,该系统通过ATM交换模块实现信号的转换与传输,主要讨论了ATM交换的原理、交换单元的结构以及APON系统中交叉连接的实现。 相似文献
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基于灰色聚类法的射击指挥评价 总被引:1,自引:1,他引:0
为科学评价地空导弹营指挥员的射击指挥能力,从分析地空导弹营射击指挥过程出发,建立了地空导弹营射击指挥能力评价指标体系,提出了一种基于灰色定权聚类和隶属度函数的射击指挥能力灰色聚类评价方法,并结合实例对射击指挥能力进行了聚类评估,对方法的有效性进行了检验.结果表明该方法用于地空导弹射击指挥能力的评价是切实可行的. 相似文献
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针对住宅规划评价指标均属于定性指标,提出了基于证据理论的住宅规划灰色综合评价方法。首先,应用序关系分析法确定评价指标的主观权重系数,其次采用灰色评价方法确定住宅规划关于不同灰类的灰色评估系数,最后采用证据理论将多位专家关于住宅规划的灰色评估系数进行集结,降低了评价结果的主观性。实验结果表明,该方法能够有效地对住宅规划进行评价,评价结果与实际情况相符。 相似文献
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综合化航空电子系统安全评估方法 总被引:3,自引:3,他引:0
新一代航空电子系统呈现综合化、模块化的趋势,具有资源高度共享、信息快速传输、软硬件高度集成的特点,这些均对航空电子系统的信息安全性提出了新的要求。基于MILS(多级独立安全系统)架构的综合化航空电子系统给出了解决信息安全性的方案,其安全评估面临巨大的挑战。传统的CC评估方法因为其复杂性、耗时性、只能定性描述而不适用于MILS系统。为了达到定量的的安全评估,提出一种基于层次分析法(AHP)和灰度关联分析法(GRAP)的MILS安全性评估方法。AHP用于获取每个组件关于最终安全评估目标的权重。GRAP适合于分析评估数据来实现定量综合评估。这种新方法克服了CC评估的缺点并实现了MILS系统安全的定量描述。 相似文献
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随着区块链技术在社会经济领域的应用不断扩大,区块链的安全问题受到越来越多的关注.本文提出了一种新的区块链安全风险评估方法,分别从技术架构和算力两方面量化区块链的安全风险.我们首先根据区块链技术体系架构建立了区块链可信计算基(Blockchain Trusted Computing Base,BTCB),进而设计了一种结合层次分析(Analytic Hierarchy Process,AHP)和配对比较的安全敏感性分析方法,为每个安全风险影响因素分配权重,最终构造了一个区块链的安全风险评估模型.在实验部分,我们采用该模型为当下15个常见公有链区块链项目打分,并与市场认可度较高的四家区块链评级机构的评测数据进行对比分析,实验结果表明我们的模型具有一定的可行性. 相似文献
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实现目标数目未知且可变条件下的多目标检测与跟踪是个极具挑战性的问题,在信噪比较低的情况下更是如此。针对这一问题,该文提出一种基于点扩散模型的多目标检测前跟踪改进算法。该算法在序贯蒙特卡罗概率假设密度(SMC-PHD)滤波框架下实现,通过自适应粒子产生机制完成新生目标在像平面中的初始定位,并根据目标在图像中可能出现的位置对全体粒子集进行有效子集分割和快速权值估算,最后利用动态聚类方法完成多目标状态的准确提取。仿真结果表明,该方法有效改善了多目标检测前跟踪的估计性能,并大大提高了算法执行效率。 相似文献
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The construction industry plays a major role in Chinese economy, but associated with a disproportionately high number of injuries and fatalities. In this paper, we proposed a improved AHP-Grey Model which has 4 limitations before. A safety hierarchical framework was established and attributes were identified through reason analysis method of Accident Chain Reaction Theory and 4M Theory; attributes weights were determined by Interval Analytic Hierarchy Process instead of AHP, and the safety checklist was also improved; grey relative Euclid weighted correlation degrees were calculated for safety level ordering instead of Deng’s grey correlation degree. The improved model can better reflect the actual safety condition of the construction. 相似文献