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基于自适应K-Means聚类的LightGBM耗差分析模型
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作者 张晓颖 刘嘉娜 李华 《长春大学学报》 2025年第10期29-35,共7页
火电是电力系统中必不可少的一部分。机组的稳定运行对火电厂经济性有着至关重要的影响。提高机组发电净效率和降低煤耗尤为重要。本研究结合最大化方差比例算法、稳态筛选、K-means聚类提出了一种基于自适应K-Means聚类的LightGBM耗差... 火电是电力系统中必不可少的一部分。机组的稳定运行对火电厂经济性有着至关重要的影响。提高机组发电净效率和降低煤耗尤为重要。本研究结合最大化方差比例算法、稳态筛选、K-means聚类提出了一种基于自适应K-Means聚类的LightGBM耗差分析模型。利用最大化方差比例算法进行稳态判别筛选出历史数据中的稳态工况;根据自适应算法确定K值进行K-Means聚类,确定电站机组运行目标基准值,并利用中位数填充方法将离散的各个工况基准值转换为连续的基准值曲线;在此基础上,建立基于自适应K-Means聚类的LightGBM耗差分析模型,量化每个可控测点对煤耗优化目标的影响程度,从而辅助电站机组运行人员实现精准控制。 展开更多
关键词 火电机组 大数据挖掘 LightGBM 节能降耗 耗差分析
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基于K-means数据深度挖掘的图书馆文献组合推荐算法研究
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作者 管维安 刘君 《黑龙江工业学院学报(综合版)》 2025年第5期108-112,共5页
对于图书馆文献资源推荐方法的评价应综合考虑召回率、综合评价指标以及运行时间,在查准率标准相同的情况下,召回率与综合评价指标取值较大,且运行时间相对较短的推荐方法具有更高的应用价值。为实现对图书馆文献资源的有效推荐,设计基... 对于图书馆文献资源推荐方法的评价应综合考虑召回率、综合评价指标以及运行时间,在查准率标准相同的情况下,召回率与综合评价指标取值较大,且运行时间相对较短的推荐方法具有更高的应用价值。为实现对图书馆文献资源的有效推荐,设计基于K-means数据深度挖掘的图书馆文献组合推荐算法。根据K-means聚类原则,实施对图书馆文献资源的分区处理,并在此基础上,深度挖掘资源排列顺序,完成基于K-means数据深度挖掘的图书馆文献资源排列。针对文献资源特征建模,通过匹配用户兴趣与文献资源的方式,设定组合推荐阈值的取值标准,完成图书馆文献组合推荐算法的设计。实验结果表明,上述推荐方法具有很高的应用价值,为实现图书馆文献资源的有效推荐提供了重要的借鉴意义。 展开更多
关键词 k-means数据挖掘 图书馆文献 组合推荐 资源分区 特征建模 阈值设定
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基于差分隐私k-means++的一种隐私预算分配方法 被引量:1
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作者 晏玲 赵海良 《信息安全研究》 北大核心 2025年第8期710-717,共8页
针对传统差分隐私k-means++算法,常用的均分法分配隐私预算无法适应不同部位对隐私预算的不同需求,而二分法中隐私预算消耗过快会使得后期噪声过多,均会导致聚类效果不佳.为解决该问题,结合等差法和均分法提出了一种新的隐私预算分配方... 针对传统差分隐私k-means++算法,常用的均分法分配隐私预算无法适应不同部位对隐私预算的不同需求,而二分法中隐私预算消耗过快会使得后期噪声过多,均会导致聚类效果不佳.为解决该问题,结合等差法和均分法提出了一种新的隐私预算分配方法.在选取初始中心点时采用均分法分配隐私预算,更新中心点的过程结合最小隐私预算,前期采用等差法,后期采用均分法.该方法使得前期分配的隐私预算较大,保证了聚类中心不会发生严重形变,后期隐私预算的消耗速度适中,避免了加入过多噪声而影响聚类效果.一系列基于真实数据的实验结果表明,与原k-means++相比,最低误差仅有0.09%;与均分法和二分法相比,聚类准确率最高分别提升了14.9%和16.9%.由此可见该方法明显优于均分法和二分法,在一定程度上能够提升聚类结果的可用性和准确性. 展开更多
关键词 信息安全 数据挖掘 差分隐私保护 k-means++ 隐私预算分配
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Disaster prediction of coal mine gas based on data mining 被引量:4
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作者 邵良杉 付贵祥 《Journal of Coal Science & Engineering(China)》 2008年第3期458-463,共6页
The technique of data mining was provided to predict gas disaster in view of the characteristics of coal mine gas disaster and feature knowledge based on gas disaster. The rough set theory was used to establish data m... The technique of data mining was provided to predict gas disaster in view of the characteristics of coal mine gas disaster and feature knowledge based on gas disaster. The rough set theory was used to establish data mining model of gas disaster prediction, and rough set attributes relations was discussed in prediction model of gas disaster to supplement the shortages of rough intensive reduction method by using information en- tropy criteria.The effectiveness and practicality of data mining technology in the prediction of gas disaster is confirmed through practical application. 展开更多
关键词 disaster prediction coal mine gas data mining rough set theory
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Mining Profitability of Telecommunication Customers Using K-Means Clustering 被引量:1
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作者 Hasitha Indika Arumawadu R. M. Kapila Tharanga Rathnayaka S. K. Illangarathne 《Journal of Data Analysis and Information Processing》 2015年第3期63-71,共9页
Data mining is the powerful technique, which can be widely used for discovering the customers’ behaviors as well as customer’s preferences. As a result, it has been widely used in top level companies for evaluating ... Data mining is the powerful technique, which can be widely used for discovering the customers’ behaviors as well as customer’s preferences. As a result, it has been widely used in top level companies for evaluating their Customer Relationship Management (CRM) system today. In this study, a new K-means clustering method proposed to evaluate the cluster customers’ profitability in telecommunication industry in Sri Lanka. Furthermore, RFM model mainly used as an input variable for K-means clustering and distortion curve used to identify optimal number of initial clusters. Based on the results, telecommunication customers’ profitability in Sri Lanka mainly categorized into three levels. 展开更多
关键词 k-means Clustering data mining RFM Model CUSTOMER Relationship Management
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SMK-means:An Improved Mini Batch K-means Algorithm Based on Mapreduce with Big Data 被引量:1
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作者 Bo Xiao Zhen Wang +1 位作者 Qi Liu Xiaodong Liu 《Computers, Materials & Continua》 SCIE EI 2018年第9期365-379,共15页
In recent years,the rapid development of big data technology has also been favored by more and more scholars.Massive data storage and calculation problems have also been solved.At the same time,outlier detection probl... In recent years,the rapid development of big data technology has also been favored by more and more scholars.Massive data storage and calculation problems have also been solved.At the same time,outlier detection problems in mass data have also come along with it.Therefore,more research work has been devoted to the problem of outlier detection in big data.However,the existing available methods have high computation time,the improved algorithm of outlier detection is presented,which has higher performance to detect outlier.In this paper,an improved algorithm is proposed.The SMK-means is a fusion algorithm which is achieved by Mini Batch K-means based on simulated annealing algorithm for anomalous detection of massive household electricity data,which can give the number of clusters and reduce the number of iterations and improve the accuracy of clustering.In this paper,several experiments are performed to compare and analyze multiple performances of the algorithm.Through analysis,we know that the proposed algorithm is superior to the existing algorithms. 展开更多
关键词 BIG data OUTLIER detection SMk-means MINI BATCH k-means simulated annealing
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基于K-means聚类算法和贝叶斯网络模型的沿海地区温湿度数据挖掘
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作者 任浩源 金晶 +2 位作者 王艳艳 常汉江 史泰龙 《航天器环境工程》 2025年第5期494-503,共10页
海上发射的航天器长期暴露于严酷的湿热腐蚀环境中,其工作性能与贮存可靠性受到区域性气候影响,而现有环境试验方法试验剖面与实际环境数据的关联性存在不足。基于在海南万宁沿海地区实时采集的户外、遮棚与库房三类场地的温湿度数据,采... 海上发射的航天器长期暴露于严酷的湿热腐蚀环境中,其工作性能与贮存可靠性受到区域性气候影响,而现有环境试验方法试验剖面与实际环境数据的关联性存在不足。基于在海南万宁沿海地区实时采集的户外、遮棚与库房三类场地的温湿度数据,采用K-means聚类算法与K2贝叶斯网络模型结构学习算法,实现对温湿度数据内在结构的特征聚类和影响规律挖掘。研究结果表明,温湿度分布能够划分为中温高湿、高温低湿和低温低湿三类典型模式;通过贝叶斯网络模型建立了月份、场地和温湿度数据之间的概率关联,可依据任务参数生成概率化环境剖面。该方法在沿海环境特征识别中表现出良好的适应性,可为航天器湿热海洋环境适应性设计及试验条件的定制化设计提供方法支持。 展开更多
关键词 k-means聚类 贝叶斯网络模型 海洋环境 温度−湿度 数据挖掘
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Polarimetric Meteorological Satellite Data Processing Software Classification Based on Principal Component Analysis and Improved K-Means Algorithm 被引量:1
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作者 Manyun Lin Xiangang Zhao +3 位作者 Cunqun Fan Lizi Xie Lan Wei Peng Guo 《Journal of Geoscience and Environment Protection》 2017年第7期39-48,共10页
With the increasing variety of application software of meteorological satellite ground system, how to provide reasonable hardware resources and improve the efficiency of software is paid more and more attention. In th... With the increasing variety of application software of meteorological satellite ground system, how to provide reasonable hardware resources and improve the efficiency of software is paid more and more attention. In this paper, a set of software classification method based on software operating characteristics is proposed. The method uses software run-time resource consumption to describe the software running characteristics. Firstly, principal component analysis (PCA) is used to reduce the dimension of software running feature data and to interpret software characteristic information. Then the modified K-means algorithm was used to classify the meteorological data processing software. Finally, it combined with the results of principal component analysis to explain the significance of various types of integrated software operating characteristics. And it is used as the basis for optimizing the allocation of software hardware resources and improving the efficiency of software operation. 展开更多
关键词 Principal COMPONENT ANALYSIS Improved k-mean ALGORITHM METEOROLOGICAL data Processing FEATURE ANALYSIS SIMILARITY ALGORITHM
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基于K-means和XGBoost的电信运营商用户套餐选择预测方法
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作者 贾琳 刘海峰 王新 《计算机应用》 北大核心 2025年第S2期131-136,共6页
为了解决电信运营商用户智能套餐推荐问题,提出一种基于用户群体划分的套餐选择预测方法。首先,考虑群体特征的差异性,利用K-means聚类算法将用户划分为5个群体;其次,在每个群体内,基于极端梯度提升(XGBoost)模型进行套餐选择预测。所... 为了解决电信运营商用户智能套餐推荐问题,提出一种基于用户群体划分的套餐选择预测方法。首先,考虑群体特征的差异性,利用K-means聚类算法将用户划分为5个群体;其次,在每个群体内,基于极端梯度提升(XGBoost)模型进行套餐选择预测。所用数据集包括用户基本信息、套餐类型、消费行为、使用量及服务质量等多维特征。实验结果表明,相较于未聚类直接预测的方式,所提方法在套餐选择预测精度上显著提高,主要用户群体(约占全部用户的92.9%)的预测精度得到了提升,提升幅度为17.6~21.7个百分点。可见,所提方法通过精确的用户群体划分和预测模型,能够有效提高套餐选择的预测效果,为电信运营商优化套餐推荐提供了有力支持。 展开更多
关键词 用户群体划分 消费行为分析 数据挖掘 电信运营商服务优化 k-means聚类
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Intelligent Educational Administration Management System Based on Data Mining Technology
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作者 Xiaofei Yang 《Journal of Contemporary Educational Research》 2025年第6期123-128,共6页
With the gradual acceleration of information construction in colleges and universities,digital campus and smart campus have gradually become important means for colleges and universities to scientifically manage the c... With the gradual acceleration of information construction in colleges and universities,digital campus and smart campus have gradually become important means for colleges and universities to scientifically manage the campus.They have been applied to teaching,scientific research,student management,and other fields,improving the quality and efficiency of management.This paper mainly studies the intelligent educational administration management system based on data mining technology.Firstly,this paper introduces the application process of data mining technology,and builds an intelligent educational administration management system based on data mining technology.Then,this paper optimizes the application of the Apriori algorithm in educational administration management through transaction compression and frequent sampling.Compared with the traditional Apriori algorithm,the optimized Apriori algorithm in this paper has a shorter execution time under the same minimum support. 展开更多
关键词 data mining Educational administration management System construction Apriori algorithm
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Unveiling the prescription patterns and mechanisms of Chinese herbal compound patents in the management of acute appendicitis:A data mining investigation
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作者 Yuewen Li Qinsheng Zhang Suqin Hu 《Journal of Chinese Pharmaceutical Sciences》 2025年第6期566-580,共15页
In the present study,data mining and network pharmacology were utilized to explore the principles and mechanisms of traditional Chinese medicine(TCM)in treating acute appendicitis.The goal was to provide a scientific ... In the present study,data mining and network pharmacology were utilized to explore the principles and mechanisms of traditional Chinese medicine(TCM)in treating acute appendicitis.The goal was to provide a scientific basis for clinical treatment and further research on this disease.First,we searched the National Patent Database for Chinese herbal compound prescriptions used to treat acute appendicitis.We then applied frequency analysis,character and taste meridian analysis,association rule analysis,and hierarchical cluster analysis to identify the patterns of TCM treatment for acute appendicitis,selecting key combinations of Chinese medicines.Next,we screened the main active components of these key TCM based on quality markers.Using databases such as SwissTargetPrediction,SymMap,ETCM,and STRING,we analyzed the pharmacological mechanisms of these key TCM in treating acute appendicitis.Key active components and targets were further verified through molecular docking.We identified a total of 129 patents involving 316 Chinese medicines,with 24 being frequently used.The results indicated that most Chinese herbs used for acute appendicitis were heat-clearing drugs,blood-activating and stasis-removing drugs,and purging drugs.The primary active ingredients of the Rhubarb-cortex moutan-flos lonicerae combination for treating acute appendicitis included Emodin,Paeonol,Physcion,Chlorogenic acid,Chrysophanol,Rhein acid,and Aloe-emodin.These ingredients targeted key proteins such as ALB,TP53,BCL2,STAT3,IL-6,and TNF,and were involved in cellular responses to lipopolysaccharides,cell composition,and various cytokine-mediated biological processes.They also interacted with signaling pathways like AGE-RAGE,TNF,IL-17,and FoxO.Based on patent data,this study analyzed medication patterns in the treatment of acute appendicitis,discussed the possible mechanisms of key TCM combinations,and provided a scientific basis and new perspectives for the diagnosis and treatment of the disease. 展开更多
关键词 Acute appendicitis data mining Rule of composition Hierarchical clustering Molecular docking
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Unveiling core acupoints in acupuncture treatment for primary depressive disorder:integrating data mining and network acupuncture-based analysis
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作者 Siyu LIU Xinnan LUOa Jiayun XIE +2 位作者 Miqun ZHOU Xiaona HU Shuang SONG 《Digital Chinese Medicine》 2025年第4期504-516,共13页
Objective To identify core acupoint patterns and elucidate the molecular mechanisms of acupuncture for primary depressive disorder(PDD)through data mining and network analysis.Methods A comprehensive literature search... Objective To identify core acupoint patterns and elucidate the molecular mechanisms of acupuncture for primary depressive disorder(PDD)through data mining and network analysis.Methods A comprehensive literature search was conducted across PubMed,Embase,Ovid Technologies(OVID),Web of Science,Cochrane Library,China National Knowledge Infrastructure(CNKI),China National Knowledge Infrastructure Database(VIP),Wanfang Data,and SinoMed Database from database foundation to January 31,2025,for clinical studies on acupuncture treatment of PDD.Descriptive statistics,high-frequency acupoint analysis,degree and betweenness centrality evaluation,and core acupoint prescription mining identified predominant therapeutic combinations for PDD.Network acupuncture was used to predict therapeutic target for the core acupoint prescription.Subsequent protein-protein interaction(PPI)network and molecular complex detection(MCODE)analyses were conducted to identify the key targets and functional modules.Gene Ontology(GO)and Kyoto Encyclopedia of Genes and Genomes(KEGG)analyses explored the underlying biological mechanisms of the core acupoint prescription in treating PDD.Results A total of 57 acupoint prescriptions underwent systematic analysis.The core therapeutic combinations comprised Baihui(GV20),Yintang(GV29),Neiguan(PC6),Hegu(LI4),and Shenmen(HT7).Network acupuncture analysis identified 88 potential therapeutic targets(79 overlapping with PDD),while PPI network analysis revealed central regulatory nodes,including interleukin(IL)-6,IL-1β,tumor necrosis factor(TNF)-α,toll-like receptor 4(TLR4),IL-10,brain-derived neurotrophic factor(BDNF),transforming growth factor(TGF)-β1,C-XC motif chemokine ligand 10(CXCL10),mitogen-activated protein kinase 3(MAPK3),and nitric oxide synthase 1(NOS1).MCODE-based modular analysis further elucidated three functionally coherent clusters:inflammation-homeostasis(score=6.571),plasticity-neurotransmission(score=3.143),and oxidative stress(score=3.000).GO and KEGG analyses demonstrated significant enrichment of the MAPK,phosphoinositide 3-kinase/protein kinase B(PI3K/Akt),and hypoxia-inducible factor(HIF)-1 signaling pathways.These mechanistic insights suggested that the antidepressant effects mediated through mechanisms of neuroinflammatory regulation,neuroplasticity restoration,and immune-oxidative stress homeostasis.Conclusion This study reveals that acupuncture alleviates depression through a multi-level mechanism,primarily involving the neuroinflammation suppression,neuroplasticity enhancement,and oxidative stress regulation.These findings systematically clarify the underlying mechanisms of acupuncture’s antidepressant effects and identify novel therapeutic targets for further mechanistic research. 展开更多
关键词 ACUPUNCTURE Primary depressive disorder(PDD) data mining Network acupuncture Association analysis
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Optimization and principles of acupoint selection and coordination in the treatment of adult abdominal obesity using acupuncture and moxibustion over the past decade:A data mining
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作者 Jia-xin SHEN Tian-yun HUANG +4 位作者 Zhou HAO Guang-bin PENG Yue-ying MA Huan-gan WU Chun-hui BAO 《World Journal of Acupuncture-Moxibustion》 2025年第3期223-231,共9页
Objective To explore the optimization and principles of acupoint selection and coordination in the treatment of adult abdominal obesity using acupuncture and moxibustion over the past decade using data mining.Methods ... Objective To explore the optimization and principles of acupoint selection and coordination in the treatment of adult abdominal obesity using acupuncture and moxibustion over the past decade using data mining.Methods Clinical studies of abdominal obesity treated with acupuncture and moxibustion,collected in the past 10 years,were searched from China Biology Medicine disc(CBMdisc),China National knowledge infrastructure(CNKI),Wanfang,China Science and Technology Journal Database(VIP),Pubmed,Embase,Google Scholar,Web of Science,(The Cumulative Index to Nursing and Allied Health Literature)CINAHL,Psyclnfo and Scopus,dated from March 1,2013 to March 31,2023.Using IBM SPSS Modeler 18.0 and other software,the frequency analysis,association-rules analysis and cluster analysis were conducted on interventions,traditional Chinese medicine(TCM)patterns,use frequency of acupoint,meridian attribution of acupoint,acupoint location,etc.Results A total of 55 articles were included,with 102 prescriptions and 71 acupoints involved.The top 3 interventions were acupoint embedding method,simple electroacupuncture and simple filiform needling.Seventeen patterns/syndromes of TCM differentiation were collected,dominated by spleen deficiency and damp blockage,spleen and kidney yang deficiency and heat accumulation in stomach and intestines.The acupoints in clinical practice were mostly at the foot-yangming stomach meridian,the conception vessel and the foot-taiyin spleen meridian,and located at the abdominal region.The top 5 acupoints of high frequency were Tianshu(ST25),Zhongwan(CV12),Daheng(SP15),Zusanli(ST36),Huaroumen(ST24)and Daimai(GB26).The specific points of the high frequency were the crossing points and front-mu points,of which,ST25 and CV12 were the most prominent.After association-rules analysis on the high-frequency acupoints,20 groups of associated acupoints were obtained,in which,the core acupoints included ST25,CV12,SP15 and ST36.Conclusion In recent 10 years,abdominal obesity is treated by the acupoints of foot-yangming stomach meridian,the conception vessel and the foot-taiyin spleen meridian.Compared with the regimen for simple obesity,the acupoints at the abdominal region are specially selected in treatment of abdominal obesity,such as ST25,CV12,SP15 and ST36.Supplementary acupoints are selected based on syndrome differentiation to simultaneously address both the disease manifestations and root causes. 展开更多
关键词 Abdominal obesity Acupuncture and moxibustion data mining Rules of acupoint selection
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Study on Screening of Main Acupoints and Pattern-Specific Acupoint Combination Rules for Acupuncture in Autism Spectrum Disorder Complicated with Sleep Disorder Based on Data Mining
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作者 Wei Du Hujie Song 《Journal of Clinical and Nursing Research》 2025年第8期241-249,共9页
Objective:To explore the core acupuncture acupoints and pattern-adapted acupoint combination rules for autism spectrum disorder(ASD)complicated with sleep disorder using clinical data mining technology.Methods:A retro... Objective:To explore the core acupuncture acupoints and pattern-adapted acupoint combination rules for autism spectrum disorder(ASD)complicated with sleep disorder using clinical data mining technology.Methods:A retrospective analysis was conducted on the diagnosis and treatment data of 104 children with ASD complicated with sleep disorder admitted to Xi’an Traditional Chinese Medicine(TCM)Encephalopathy Hospital from January 2022 to December 2024.Cross-pattern main acupoints were screened via frequency statistics,chi-square test,and factor analysis;pattern-specific auxiliary acupoints were extracted by combining multiple correspondence analysis,cluster analysis,and association rule mining.Results:Ten cross-pattern main acupoints(Baihui,Sishenzhen,Language Area 1,Language Area 2,Neiguan,Shenmen,Yongquan,Xuanzhong)were identified,and acupoint combination schemes for four major TCM patterns(Hyperactivity of Liver and Heart Fire,Deficiency of Kidney Essence,Deficiency of Both Heart and Spleen,Hyperactivity of Liver with Spleen Deficiency)were established.Conclusion:Acupuncture treatment should follow the principle of“regulating spirit and calming the brain as the root,and dredging collaterals based on pattern differentiation as the branch”.The synergy between main and auxiliary acupoints can accurately regulate the disease,providing a basis for precise clinical treatment. 展开更多
关键词 Autism Spectrum Disorder(ASD) Sleep disorder Acupoint selection rule data mining
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A Residual Convolutional Autoencoder-Based Structural Damage Detection Approach for Deep-Sea Mining Riser Considering Data Fusion
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作者 JIANG Yufeng ZHENG Zepeng +4 位作者 LIU Yu WANG Shuqing LIU Yuchi YANG Zeyun YANG Yuan 《Journal of Ocean University of China》 2025年第6期1657-1669,共13页
A deep-sea riser is a crucial component of the mining system used to lift seafloor mineral resources to the vessel.Even minor damage to the riser can lead to substantial financial losses,environmental impacts,and safe... A deep-sea riser is a crucial component of the mining system used to lift seafloor mineral resources to the vessel.Even minor damage to the riser can lead to substantial financial losses,environmental impacts,and safety hazards.However,identifying modal parameters for structural health monitoring remains a major challenge due to its large deformations and flexibility.Vibration signal-based methods are essential for detecting damage and enabling timely maintenance to minimize losses.However,accurately extracting features from one-dimensional(1D)signals is often hindered by various environmental factors and measurement noises.To address this challenge,a novel approach based on a residual convolutional auto-encoder(RCAE)is proposed for detecting damage in deep-sea mining risers,incorporating a data fusion strategy.First,principal component analysis(PCA)is applied to reduce environmental fluctuations and fuse multisensor strain readings.Subsequently,a 1D-RCAE is used to extract damage-sensitive features(DSFs)from the fused dataset.A Mahalanobis distance indicator is established to compare the DSFs of the testing and healthy risers.The specific threshold for these distances is determined using the 3σcriterion,which is employed to assess whether damage has occurred in the testing riser.The effectiveness and robustness of the proposed approach are verified through numerical simulations of a 500-m riser and experimental tests on a 6-m riser.Moreover,the impact of contaminated noise and environmental fluctuations is examined.Results show that the proposed PCA-1D-RCAE approach can effectively detect damage and is resilient to measurement noise and environmental fluctuations.The accuracy exceeds 98%under noise-free conditions and remains above 90%even with 10 dB noise.This novel approach has the potential to establish a new standard for evaluating the health and integrity of risers during mining operations,thereby reducing the high costs and risks associated with failures.Maintenance activities can be scheduled more efficiently by enabling early and accurate detection of riser damage,minimizing downtime and avoiding catastrophic failures. 展开更多
关键词 deep-sea mining riser structural damage detection residual convolutional auto-encoder data fusion principal component analysis
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Data mining in neurosurgical emergencies: real-world impact of real-time intelligence
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作者 Yi-Rui Sun 《Medical Data Mining》 2025年第3期73-75,共3页
Introduction Neurosurgical emergencies such as spontaneous intracerebral hemorrhage(ICH),traumatic brain injury(TBI),and acute brain herniation are among the most time-sensitive and high-stakes conditions in modern me... Introduction Neurosurgical emergencies such as spontaneous intracerebral hemorrhage(ICH),traumatic brain injury(TBI),and acute brain herniation are among the most time-sensitive and high-stakes conditions in modern medicine.Clinical decisions often must be made within minutes,yet these decisions are traditionally guided by limited information,heuristic reasoning,and past experience.In this context,the rise of medical data mining and real-time analytics offers a transformative opportunity:to extract actionable intelligence from the flood of clinical,imaging,and physiological data already being collected,and to use this intelligence to guide care in real time[1–3](Figure 1). 展开更多
关键词 acute brain herniation extract actionable spontaneous intracerebral hemorrhage ich traumatic brain injury tbi data mining neurosurgical emergencies traumatic brain injury spontaneous intracerebral hemorrhage real time intelligence
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SWFP-Miner: an efficient algorithm for mining weighted frequent pattern over data streams
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作者 Wang Jie Zeng Yu 《High Technology Letters》 EI CAS 2012年第3期289-294,共6页
Previous weighted frequent pattern (WFP) mining algorithms are not suitable for data streams for they need multiple database scans. In this paper, we present an efficient algorithm SWFP-Miner to mine weighted freque... Previous weighted frequent pattern (WFP) mining algorithms are not suitable for data streams for they need multiple database scans. In this paper, we present an efficient algorithm SWFP-Miner to mine weighted frequent pattern over data streams. SWFP-Miner is based on sliding window and can discover important frequent pattern from the recent data. A new refined weight definition is proposed to keep the downward closure property, and two pruning strategies are presented to prune the weighted infrequent pattern. Experimental studies are performed to evaluate the effectiveness and efficiency of SWFP-Miner. 展开更多
关键词 weighted frequent pattern (WFP) mining data streams data mining slidingwindow SWFP-Miner
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A State of Art Analysis of Telecommunication Data by k-Means and k-Medoids Clustering Algorithms
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作者 T. Velmurugan 《Journal of Computer and Communications》 2018年第1期190-202,共13页
Cluster analysis is one of the major data analysis methods widely used for many practical applications in emerging areas of data mining. A good clustering method will produce high quality clusters with high intra-clus... Cluster analysis is one of the major data analysis methods widely used for many practical applications in emerging areas of data mining. A good clustering method will produce high quality clusters with high intra-cluster similarity and low inter-cluster similarity. Clustering techniques are applied in different domains to predict future trends of available data and its uses for the real world. This research work is carried out to find the performance of two of the most delegated, partition based clustering algorithms namely k-Means and k-Medoids. A state of art analysis of these two algorithms is implemented and performance is analyzed based on their clustering result quality by means of its execution time and other components. Telecommunication data is the source data for this analysis. The connection oriented broadband data is given as input to find the clustering quality of the algorithms. Distance between the server locations and their connection is considered for clustering. Execution time for each algorithm is analyzed and the results are compared with one another. Results found in comparison study are satisfactory for the chosen application. 展开更多
关键词 k-means ALGORITHM k-Medoids ALGORITHM data CLUSTERING Time COMPLEXITY TELECOMMUNICATION data
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Campus Economic Analysis Based on K-Means Clustering and Hotspot Mining
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作者 Xiuzhang Yang Shuai Wu +2 位作者 Huan Xia Yuanbo Li Xin Li 《Review of Educational Theory》 2020年第2期42-50,共9页
With the advent of the era of big data and the development and construction of smart campuses,the campus is gradually moving towards digitalization,networking and informationization.The campus card is an important par... With the advent of the era of big data and the development and construction of smart campuses,the campus is gradually moving towards digitalization,networking and informationization.The campus card is an important part of the construction of a smart campus,and the massive data it generates can indirectly reflect the living conditions of students at school.In the face of the campus card,how to quickly and accurately obtain the information required by users from the massive data sets has become an urgent problem that needs to be solved.This paper proposes a data mining algorithm based on K-Means clustering and time series.It analyzes the consumption data of a college student’s card to deeply mine and analyze the daily life consumer behavior habits of students,and to make an accurate judgment on the specific life consumer behavior.The algorithm proposed in this paper provides a practical reference for the construction of smart campuses in universities,and has important theoretical and application values. 展开更多
关键词 Machine learning k-means clustering data mining Consumer behavior Campus economy Economic regionalization
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Detecting Anomalies in Irregular Data Using K-means Clustered Signal Dictionary
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作者 G. Talavera Reyes Rajan M. Chandra +1 位作者 Ha Thu Le Zekeriya Aliyazicioglu 《Computer Technology and Application》 2016年第5期244-252,共9页
The critical nature of satellite network traffic provides a challenging environment to detect intrusions. The intrusion detection method presented aims to raise an alert whenever satellite network signals begin to exh... The critical nature of satellite network traffic provides a challenging environment to detect intrusions. The intrusion detection method presented aims to raise an alert whenever satellite network signals begin to exhibit anomalous patterns determined by Euclidian distance metric. In line with anomaly-based intrusion detection systems, the method presented relies heavily on building a model of"normal" through the creation of a signal dictionary using windowing and k-means clustering. The results of three signals fi'om our case study are discussed to highlight the benefits and drawbacks of the method presented. Our preliminary results demonstrate that the clustering technique used has great potential for intrusion detection for non-periodic satellite network signals. 展开更多
关键词 Intrusion detection irregular data k-means clustering machine learning signal dictionary
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