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New density clustering-based approach for failure mode and effect analysis considering opinion evolution and bounded confidence
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作者 WANG Jian ZHU Jingyi +1 位作者 SHI Hua LIU Huchen 《Journal of Systems Engineering and Electronics》 CSCD 2024年第6期1491-1506,共16页
Failure mode and effect analysis(FMEA)is a preven-tative risk evaluation method used to evaluate and eliminate fail-ure modes within a system.However,the traditional FMEA method exhibits many deficiencies that pose ch... Failure mode and effect analysis(FMEA)is a preven-tative risk evaluation method used to evaluate and eliminate fail-ure modes within a system.However,the traditional FMEA method exhibits many deficiencies that pose challenges in prac-tical applications.To improve the conventional FMEA,many modified FMEA models have been suggested.However,the majority of them inadequately address consensus issues and focus on achieving a complete ranking of failure modes.In this research,we propose a new FMEA approach that integrates a two-stage consensus reaching model and a density peak clus-tering algorithm for the assessment and clustering of failure modes.Firstly,we employ the interval 2-tuple linguistic vari-ables(I2TLVs)to express the uncertain risk evaluations provided by FMEA experts.Then,a two-stage consensus reaching model is adopted to enable FMEA experts to reach a consensus.Next,failure modes are categorized into several risk clusters using a density peak clustering algorithm.Finally,the proposed FMEA is illustrated by a case study of load-bearing guidance devices of subway systems.The results show that the proposed FMEA model can more easily to describe the uncertain risk information of failure modes by using the I2TLVs;the introduction of an endogenous feedback mechanism and an exogenous feedback mechanism can accelerate the process of consensus reaching;and the density peak clustering of failure modes successfully improves the practical applicability of FMEA. 展开更多
关键词 failure mode and effect analysis(FMEA) interval 2-tuple linguistic variable(I2TLV) consensus reaching density peak clustering algorithm
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Using genetic algorithm based fuzzy adaptive resonance theory for clustering analysis 被引量:3
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作者 LIU Bo WANG Yong WANG Hong-jian 《哈尔滨工程大学学报》 EI CAS CSCD 北大核心 2006年第B07期547-551,共5页
关键词 聚类分析 遗传算法 模糊自适应谐振理论 人工神经网络
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Clustering Analysis of Black-start Decision-making with a Large Group of Decision-makers
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作者 Liu, Weijia Lin, Zhenzhi +4 位作者 Wen, Fushuan Xue, Yusheng Dai, Yan Sun, Weizhen Wang, Chao 《电力系统自动化》 EI CSCD 北大核心 2012年第8期154-160,共7页
The optimization of black-start decision-making plays an important role in the rapid restoration of a power system after a major failure/outage.With the introduction of the concept of smart grids and the development o... The optimization of black-start decision-making plays an important role in the rapid restoration of a power system after a major failure/outage.With the introduction of the concept of smart grids and the development of real-time communication networks,the black-start decision-makers are no longer limited to only one or a few power system experts such as dispatchers,but rather a large group of professional people in practice.The overall behaviors of a large decision-making group of decision-makers/experts are more complicated and unpredictable.However,the existing methods for black-start decision-making cannot handle the situations with a large group of decision-makers.Given this background,a clustering algorithm is presented to optimize the black-start decision-making problem with a large group of decision-makers.Group decision-making preferences are obtained by clustering analysis,and the final black-start decision-making results are achieved by combining the weights of black-start indexes and the preferences of the decision-making group.The effectiveness of the proposed method is validated by a practical case.This work extends the black-start decision-making problem to situations with a large group of decision-makers. 展开更多
关键词 决策者 聚类分析 黑启动 大集 实时通信网络 决策问题 电力系统 电源系统
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基于K-means和LCA的自动驾驶交通事故聚类分析
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作者 乔剑锋 王亚楠 +2 位作者 吕淑然 王汀 夏学锋 《中国安全科学学报》 北大核心 2025年第7期192-200,共9页
为了深入挖掘自动驾驶汽车(AV)道路交通事故的内在规律,仅依靠单一事故描述因素的统计分析是不够的,还需要进一步挖掘由多个因素相互作用所体现的综合潜在类别。鉴于AV事故数据既包含结构化信息,又包含叙事文本的特点,在类型识别过程中... 为了深入挖掘自动驾驶汽车(AV)道路交通事故的内在规律,仅依靠单一事故描述因素的统计分析是不够的,还需要进一步挖掘由多个因素相互作用所体现的综合潜在类别。鉴于AV事故数据既包含结构化信息,又包含叙事文本的特点,在类型识别过程中创新性地提出将K-means聚类分析与潜在类别分析(LCA)相结合的方法,首先,使用K-means方法从叙事文本中提取关键信息;然后,将其作为LCA模型的输入,克服LCA仅能利用现有事故报告中的结构化信息这一局限性;最后,采用美国加利福尼亚州的437起AV交通事故验证组合方法的有效性。结果表明:AV事故主要表现为4个综合类型;K-means与LCA的组合方法能对含叙述文本的结构化信息实施高效的聚类分析。 展开更多
关键词 k-meanS 潜在类别分析(LCA) 自动驾驶 聚类分析 自动驾驶汽车(AV) 交通事故
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Group decision-making method based on entropy and experts cluster analysis 被引量:12
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作者 Xuan Zhou Fengming Zhang Xiaobin Hui Kewu Li 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2011年第3期468-472,共5页
According to the aggregation method of experts' evaluation information in group decision-making,the existing methods of determining experts' weights based on cluster analysis take into account the expert's preferen... According to the aggregation method of experts' evaluation information in group decision-making,the existing methods of determining experts' weights based on cluster analysis take into account the expert's preferences and the consistency of expert's collating vectors,but they lack of the measure of information similarity.So it may occur that although the collating vector is similar to the group consensus,information uncertainty is great of a certain expert.However,it is clustered to a larger group and given a high weight.For this,a new aggregation method based on entropy and cluster analysis in group decision-making process is provided,in which the collating vectors are classified with information similarity coefficient,and the experts' weights are determined according to the result of classification,the entropy of collating vectors and the judgment matrix consistency.Finally,a numerical example shows that the method is feasible and effective. 展开更多
关键词 group decision-making judgment matrix ENTROPY information similarity coefficient cluster analysis.
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Vertical Migrating and Cluster Analysis of Soil Mesofauna at Dongying Halophytes Garden in Yellow River Delta 被引量:3
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作者 He Fu-xia Xie Tong-yin +1 位作者 Xie Gui-lin Fu Rong-shu 《Journal of Northeast Agricultural University(English Edition)》 CAS 2014年第1期25-30,共6页
For the first time, we used Tullgren method made a study on vertical migrating and cluster analysis of the soil mesofauna in Dongying Halophytes Garden in the Yellow River Delta (YRD), Shandong Province. The results... For the first time, we used Tullgren method made a study on vertical migrating and cluster analysis of the soil mesofauna in Dongying Halophytes Garden in the Yellow River Delta (YRD), Shandong Province. The results showed that the soil mesofauna tended to gather on soil surface in most samples at most times, but the vertical migrating greatly varied in different seasons or environment conditions. Acari was the dominant group. The index of diversity of the soil fauna was correlated with the index of evenness. The Acari's number of individuals infected other species and numbers. Dominant group-Aeari made greater contribution to the result of cluster analysis, and there were significant differences between communities in different habitats by cluster analysis with both Bray-Curtis and Jaccard similarity coefficient. 展开更多
关键词 HALOPHYTES soil mesofauna vertical migrating cluster analysis
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Blind source separation by weighted K-means clustering 被引量:5
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作者 Yi Qingming 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第5期882-887,共6页
Blind separation of sparse sources (BSSS) is discussed. The BSSS method based on the conventional K-means clustering is very fast and is also easy to implement. However, the accuracy of this method is generally not ... Blind separation of sparse sources (BSSS) is discussed. The BSSS method based on the conventional K-means clustering is very fast and is also easy to implement. However, the accuracy of this method is generally not satisfactory. The contribution of the vector x(t) with different modules is theoretically proved to be unequal, and a weighted K-means clustering method is proposed on this grounds. The proposed algorithm is not only as fast as the conventional K-means clustering method, but can also achieve considerably accurate results, which is demonstrated by numerical experiments. 展开更多
关键词 blind source separation underdetermined mixing sparse representation weighted k-means clustering.
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Correlation and Path Coefficient and Chi-square Distance Cluster Analysis for Several Characteristics in Tobacco Germplasm Resource 被引量:1
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作者 LI Wenping ZHU Lieshu +3 位作者 ZHAO Songyi LIANG Qizheng WANG Yuchao TAN Xi 《Journal of Northeast Agricultural University(English Edition)》 CAS 2010年第1期10-15,共6页
Correlation and path coefficient analyses were conducted for 10 characteristics of 24 pure lines of flue-cured tobacco such as plant height, knot distance, leaf number, the central leaf length and width, ratio of the ... Correlation and path coefficient analyses were conducted for 10 characteristics of 24 pure lines of flue-cured tobacco such as plant height, knot distance, leaf number, the central leaf length and width, ratio of the length to width, stem girth, dates of budding, leaf yield and ratio of the prime-medium tobacco. The leaf number and the central leaf length showed a positive or a strong positive correlation with the yield per plant. And the leaf number and leaf yield per plant showed a strong positive correlation with the ratio of prime-medium tobacco. The results showed that the leaf yield per plant among these characteristics played a major role in determining the ratio of prime-medium tobacco while the others were less related with the ratio. Square sum of deviation method cluster analyses showed that 24 pure lines of flue-cured tobacco were clustered into two groups. Of the pure lines, Line T1706 and Line T1245 had a far relationship with all other lines, and also had a heterosis when crossed with the other lines. Lines Guangdonghuang 1 and R72(3)B-2-1 were closely related. 展开更多
关键词 flue-cured tobacco correlation analysis path coefficient analysis cluster analysis
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A K-means clustering based blind multiband spectrum sensing algorithm for cognitive radio 被引量:4
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作者 LEI Ke-jun TAN Yang-hong +1 位作者 YANG Xi WANG Han-rui 《Journal of Central South University》 SCIE EI CAS CSCD 2018年第10期2451-2461,共11页
In this paper,a blind multiband spectrum sensing(BMSS)method requiring no knowledge of noise power,primary signal and wireless channel is proposed based on the K-means clustering(KMC).In this approach,the KMC algorith... In this paper,a blind multiband spectrum sensing(BMSS)method requiring no knowledge of noise power,primary signal and wireless channel is proposed based on the K-means clustering(KMC).In this approach,the KMC algorithm is used to identify the occupied subband set(OSS)and the idle subband set(ISS),and then the location and number information of the occupied channels are obtained according to the elements in the OSS.Compared with the classical BMSS methods based on the information theoretic criteria(ITC),the new method shows more excellent performance especially in the low signal-to-noise ratio(SNR)and the small sampling number scenarios,and more robust detection performance in noise uncertainty or unequal noise variance applications.Meanwhile,the new method performs more stablely than the ITC-based methods when the occupied subband number increases or the primary signals suffer multi-path fading.Simulation result verifies the effectiveness of the proposed method. 展开更多
关键词 cognitive radio(CR) blind multiband spectrum sensing(BMSS) k-means clustering(KMC) occupied subband set(OSS) idle subband set(ISS) information theoretic criteria(ITC) noise uncertainty
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基于K-means++聚类分析的轮轨垂向力基线漂移预处理研究
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作者 施亦非 王锋 +1 位作者 石佳 黄宇峰 《振动与冲击》 北大核心 2025年第9期127-134,168,共9页
采集轮轨垂向力等强冲击能量的振动信号时,受传感器特性和环境影响,测得信号中存在基线漂移,严重影响后续数据分析处理。曲线拟合和密度聚类是修正基线漂移的常见方法,通过选取特定信号区间作为基点进行拟合,可有效去除基线漂移;然而,... 采集轮轨垂向力等强冲击能量的振动信号时,受传感器特性和环境影响,测得信号中存在基线漂移,严重影响后续数据分析处理。曲线拟合和密度聚类是修正基线漂移的常见方法,通过选取特定信号区间作为基点进行拟合,可有效去除基线漂移;然而,由于基点选取极度依赖先验知识,限制了其应用范围。为解决该问题,提出一种基于K-means++聚类分析的轮轨垂向力基线漂移预处理方法。首先,选取基尼系数和方差,在欧氏空间准确表征载荷与无载荷数据段的差异,进而引导K-means++聚类;随后,基于K-means++聚类选取无载荷数据段,量化信号的基线漂移干扰;最后,以无载荷数据段为基点,拟合并修正基线漂移。经过仿真和实测数据分析,与最小二乘法、经验模态分解和密度聚类相比,该方法在信噪比、均方误差、基线去除误差和运行时间等方面均有一定优势。结果表明,基于基尼系数和方差的K-means++聚类分析,克服了密度聚类分析的先验知识依赖,可有效修正轮轨垂向力基线漂移,有望用于其他强冲击能量振动信号的数据预处理。 展开更多
关键词 轮轨力 基线漂移 k-means++ 基尼系数 聚类分析
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基于K-means算法的艾德莱斯绸色彩提取方法的优化设计
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作者 刘恒君 饶蕾 曹远荣 《毛纺科技》 北大核心 2025年第8期82-90,共9页
为了提高艾德莱斯绸的数据化以及数字化研究,针对艾德莱斯绸本身的工艺特征优化设计一种基于K-means聚类算法的色彩提取方法。首先采用非接触扫描仪扫描样本获得图像;通过中值滤波对比图像在不同窗口尺寸下的平滑降噪效果,确定最适合艾... 为了提高艾德莱斯绸的数据化以及数字化研究,针对艾德莱斯绸本身的工艺特征优化设计一种基于K-means聚类算法的色彩提取方法。首先采用非接触扫描仪扫描样本获得图像;通过中值滤波对比图像在不同窗口尺寸下的平滑降噪效果,确定最适合艾德莱斯绸图像预处理的窗口数值;再将图像的色彩信息从RGB空间转为更符合视觉分析的HSV空间;结合艾德莱斯绸本身纹样特征,对比2种常见的最佳类簇数目k值选取办法,并进行k值选取办法的优化和对比;最后将聚类算法与数据分析相结合,采用多个k值分别确定图像单个色彩。结果表明:该优化方式可以较为准确地提取出复杂的艾德莱斯绸色彩及其占比情况,为提取复杂图像色彩提供了新的研究思路,拓宽传统纹样图像的色彩研究方式。 展开更多
关键词 k-meanS聚类算法 艾德莱斯绸 色彩提取 数据分析
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The Definition of Sustainable Development of Private University- Based on the Method of Literature Review and Cluster Analysis 被引量:1
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作者 Shi Meng Wang Dongling Dai Jiabao(译) 《学术界》 CSSCI 北大核心 2016年第2期314-319,共6页
The sustainable development of private university has become the focus of the academia and the private higher education after an approximately golden period.Through the method of literature review and cluster analysis... The sustainable development of private university has become the focus of the academia and the private higher education after an approximately golden period.Through the method of literature review and cluster analysis,this paper studies the concept of sustainable development of private university from the perspective of the connotation definition and epitaxial recognition,in order to effectively reveal the essence of the sustainable development of private university,hoping to provide some certain support for the theory and practice of sustainable development of private university. 展开更多
关键词 可持续发展 民办高校 聚类分析 文献综述 定义 教育发展 学术界
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基于自组织K-means的城市道路VRU事故场景复杂度评价
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作者 程瑞 卢春成 +3 位作者 袁泉 崔涛 To.Jeremy 王涛 《汽车安全与节能学报》 北大核心 2025年第3期386-395,共10页
为了满足智能汽车避撞系统验证中高风险测试环境的需要,同时丰富面向弱势道路使用者(VRU)的自动驾驶场景评价内容和方法,该文通过对广西桂林市2016—2020年交通事故案例收集整理,筛选得到1429例汽车与VRU碰撞事故数据;依据事故调查经验... 为了满足智能汽车避撞系统验证中高风险测试环境的需要,同时丰富面向弱势道路使用者(VRU)的自动驾驶场景评价内容和方法,该文通过对广西桂林市2016—2020年交通事故案例收集整理,筛选得到1429例汽车与VRU碰撞事故数据;依据事故调查经验选取了13种风险因素,基于自组织K-means聚类分析构建了10类适用于中国城市交通状况的汽车与VRU碰撞的典型场景;利用信息熵理论建立了VRU典型场景复杂度评价模型,通过联合logistic模型与反向神经(BP)网络确定变量状态及各维度权重,计算得到各类场景复杂度;运用Guass混合模型对复杂度进行聚类,最终获得4个场景复杂度等级。结果表明:在限速30km/h的道路上,夜间直行汽车与横穿马路的电动自行车在非人行横道区域发生侧面碰撞的场景复杂度最高。该文的研究成果可为智能汽车安全性测试提供具备中国城市道路特征的实验场景,同时为车外VRU避撞方案和决策的制定提供一定的依据。 展开更多
关键词 弱势道路使用者(VRU) 智能汽车 典型场景 自组织k-means聚类分析
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The Fuzzy Cluster Analysis in Identification of Key Temperatures in Machine Tool
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作者 ZHAO Da-quan 1, ZHENG Li 1, XIANG Wei-hong 1, LI Kang 1, LIU Da-cheng 1, ZHANG Bo-peng 2 (1. Department of Industrial Engineering, Tsinghua University, 2. Department of Precision Instruments and Mechanology, Tsinghua University, B eijing 100084, China) 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2002年第S1期88-89,共2页
The thermal-induced error is a very important sour ce of machining errors of machine tools. To compensate the thermal-induced machin ing errors, a relationship model between the thermal field and deformations was need... The thermal-induced error is a very important sour ce of machining errors of machine tools. To compensate the thermal-induced machin ing errors, a relationship model between the thermal field and deformations was needed. The relationship can be deduced by virtual of FEM (Finite Element Method ), ANN (Artificial Neural Network) or MRA (Multiple Regression Analysis). MR A is on the basis of a total understanding of the temperature distribution of th e machine tool. Although the more the temperatures measured are, the more accura te the MRA is, too more temperatures will hinder the analysis calculation. So it is necessary to identify the key temperatures of the machine tool. The selectio n of key temperatures decides the efficiency and precision of MRA. Because of th e complexities and multi-input and multi-output structure of the relationships , the exact quantitative portions as well as the unclear portions must be taken into consideration together to improve the identification of key temperatures. I n this paper, a fuzzy cluster analysis was used to select the key temperatures. The substance of identifying the key temperatures is to group all temperatures b y their relativity, and then to select a temperature from each group as the repr esentation. A fuzzy cluster analysis can uncover the relationships between t he thermal field and deformations more truly and thoroughly. A fuzzy cluster ana lysis is the cluster analysis based on fuzzy sets. Given U={u i|i=0,...,N}, in which u i is the temperature measured, a fuzzy matrix R can be obta ined. The transfer close package t(R) can be deduced from R. A fuzzy clu ster of U then conducts on the basis of t(R). Based on the fuzzy cluster analysis discussed above, this paper identified the k ey temperatures of a horizontal machining center. The number of the temperatures measured was reduced to 4 from 32, and then the multiple regression relationshi p models between the 4 temperatures and the thermal deformations of the spindle were drawn. The remnant errors between the regression models and measured deform ations reached a satisfying low level. At the same time, the decreasing of tempe rature variable number improved the efficiency of measure and analysis greatly. 展开更多
关键词 The Fuzzy cluster analysis in Identification of Key Temperatures in Machine Tool
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多目标规划与K-means聚类的多波束测深测线设计
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作者 黄丽均 朴宇豪 +1 位作者 王祎阳 李国东 《海洋测绘》 北大核心 2025年第1期16-20,共5页
为解决多波束测深在海底地形复杂情况下的多波束测线布设问题,提高测深效率,首先基于K-means聚类将海底区域划分为若干理想斜坡,接着基于多目标规划以测线长度最短和覆盖率最大为目标函数,并考虑条带重叠率以及两端测线覆盖边缘区域等... 为解决多波束测深在海底地形复杂情况下的多波束测线布设问题,提高测深效率,首先基于K-means聚类将海底区域划分为若干理想斜坡,接着基于多目标规划以测线长度最短和覆盖率最大为目标函数,并考虑条带重叠率以及两端测线覆盖边缘区域等限制条件,利用组合权重法建立多目标规划的测线布设模型。对假设矩形待测海域进行仿真计算,结果表明分区域规划后按照此测线布设模型得到的测线布设方案,测线的总长度达到最短,重叠率为18.42%,覆盖待测海域的面积比达到98.91%。本文提出的多波束测线设计方法可为提高多波束测深的效率提供理论依据。 展开更多
关键词 多波束测深 测线设计 多目标规划 仿真分析 k-means三维聚类 组合权重
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基于改进K-means聚类的轨道交通基础设施分布式光伏发电典型场景生成及出力特性分析 被引量:3
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作者 陈凯 雷琪 李豆萌 《电气工程学报》 CSCD 北大核心 2024年第2期364-372,共9页
受限于自然条件,光伏出力具有很强的随机性。为准确评估轨道交通基础设施分布式光伏发电的光伏出力特性,提出一种基于改进K-means聚类算法的轨道交通基础设施分布式光伏发电典型场景生成方法,并基于此进行光伏出力特性分析。首先,基于... 受限于自然条件,光伏出力具有很强的随机性。为准确评估轨道交通基础设施分布式光伏发电的光伏出力特性,提出一种基于改进K-means聚类算法的轨道交通基础设施分布式光伏发电典型场景生成方法,并基于此进行光伏出力特性分析。首先,基于分布式光伏发电设施以及气象数据,利用PVsyst软件模拟光伏发电出力数据。然后,针对基本K-means聚类算法聚类参数和初始聚类中心盲目性高的问题,结合聚类有效性指标(Density based index,DBI)和层次聚类对其进行改进并利用改进K-means聚类算法生成光伏典型日出力场景。最后,基于华中地区某地轨道交通基础设施分布式光伏系统对所提方法的有效性和优越性进行验证,并通过定性和定量分析各典型场景的出力特性揭示轨道交通基础设施分布式光伏出力的规律和特点。 展开更多
关键词 分布式光伏出力 改进k-means聚类算法 典型出力场景 出力特性分析
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基于PCA-Clustering的压缩机回液故障诊断 被引量:10
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作者 周镇新 李绍斌 +5 位作者 谭泽汉 陈焕新 王江宇 刘江岩 郭亚宾 孙劭波 《制冷学报》 CAS CSCD 北大核心 2018年第4期111-118,共8页
在多联机(VRF)空调系统中,压缩机回液将导致能量损失。本文结合大数据提出了一种基于PCA-Clustering的压缩机回液故障诊断的方法。首先提取出故障相关变量,并通过数据预处理,剔除异常值与空值;然后将处理后的数据进行主成分分析(PCA),... 在多联机(VRF)空调系统中,压缩机回液将导致能量损失。本文结合大数据提出了一种基于PCA-Clustering的压缩机回液故障诊断的方法。首先提取出故障相关变量,并通过数据预处理,剔除异常值与空值;然后将处理后的数据进行主成分分析(PCA),获取降维后的新主元变量数据;最后将新的主元变量进行聚类分析(Clustering analysis)得到回液故障数据分类标签。结果表明:该方法能够在数据标签未知的情况下,较好的区分不同类别的压缩机回液故障及正常数据,使压缩机回液故障诊断率达到94.29%。 展开更多
关键词 多联机系统 压缩机回液 故障检测与诊断 聚类分析 主成分分析
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Deceptive jamming suppression in multistatic radar based on coherent clustering 被引量:14
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作者 ABDALLA Ahmed AHMED Mohaned Giess Shokrallah +2 位作者 ZHAO Yuan XIONG Ying TANG Bin 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2018年第2期269-277,共9页
This paper proposes a suppression method of the deceptive false target(FT) produced by digital radio frequency memory(DRFM) in a multistatic radar system. The simulated deceptive false targets from DRFM cannot be easi... This paper proposes a suppression method of the deceptive false target(FT) produced by digital radio frequency memory(DRFM) in a multistatic radar system. The simulated deceptive false targets from DRFM cannot be easily discriminated and suppressed with traditional radar systems. Therefore, multistatic radar has attracted considerable interest as it provides improved performance against deception jamming due to several separated receivers. This paper first investigates the received signal model in the presence of multiple false targets in all receivers of the multistatic radar. Then, obtain the propagation time delays of the false targets based on the cross-correlation test of the received signals in different receivers. In doing so, local-density-based spatial clustering of applications with noise(LDBSCAN) is proposed to discriminate the FTs from the physical targets(PTs) after compensating the FTs time delays, where the FTs are approximately coincident with one position, while PTs possess small dispersion.Numerical simulations are carried out to demonstrate the feasibility and validness of the proposed method. 展开更多
关键词 multistatic radar clustering analysis electronic counter-countermeasure(ECCM) deceptive jamming
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Ant colony ATTA clustering algorithm of rock mass structural plane in groups 被引量:11
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作者 李夕兵 王泽伟 +1 位作者 彭康 刘志祥 《Journal of Central South University》 SCIE EI CAS 2014年第2期709-714,共6页
Based on structural surface normal vector spherical distance and the pole stereographic projection Euclidean distance,two distance functions were established.The cluster analysis of structure surface was conducted by ... Based on structural surface normal vector spherical distance and the pole stereographic projection Euclidean distance,two distance functions were established.The cluster analysis of structure surface was conducted by the use of ATTA clustering methods based on ant colony piles,and Silhouette index was introduced to evaluate the clustering effect.The clustering analysis of the measured data of Sanshandao Gold Mine shows that ant colony ATTA-based clustering method does better than K-mean clustering analysis.Meanwhile,clustering results of ATTA method based on pole Euclidean distance and ATTA method based on normal vector spherical distance have a great consistence.The clustering results are most close to the pole isopycnic graph.It can efficiently realize grouping of structural plane and determination of the dominant structural surface direction.It is made up for the defects of subjectivity and inaccuracy in icon measurement approach and has great engineering value. 展开更多
关键词 rock mass discontinuity cluster analysis ant colony ATTA algorithm distance function Silhouette index
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Kernel method-based fuzzy clustering algorithm 被引量:2
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作者 WuZhongdong GaoXinbo +1 位作者 XieWeixin YuJianping 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2005年第1期160-166,共7页
The fuzzy C-means clustering algorithm(FCM) to the fuzzy kernel C-means clustering algorithm(FKCM) to effectively perform cluster analysis on the diversiform structures are extended, such as non-hyperspherical data, d... The fuzzy C-means clustering algorithm(FCM) to the fuzzy kernel C-means clustering algorithm(FKCM) to effectively perform cluster analysis on the diversiform structures are extended, such as non-hyperspherical data, data with noise, data with mixture of heterogeneous cluster prototypes, asymmetric data, etc. Based on the Mercer kernel, FKCM clustering algorithm is derived from FCM algorithm united with kernel method. The results of experiments with the synthetic and real data show that the FKCM clustering algorithm is universality and can effectively unsupervised analyze datasets with variform structures in contrast to FCM algorithm. It is can be imagined that kernel-based clustering algorithm is one of important research direction of fuzzy clustering analysis. 展开更多
关键词 fuzzy clustering analysis kernel method fuzzy C-means clustering.
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