Showing 21 - 40 results of 1,228 for search '"principal component analysis"', query time: 0.07s Refine Results
  1. 21

    A Principal Component Analysis Control Chart Method for Catenary Status Evaluation and Diagnosis by Shan Lin, Liping Liu, Meiwan Rao, Shu Deng, Jiaxin Wang, Wenfan Zhong, Li Lun

    Published 2021-01-01
    “…To make accurate and comprehensive evaluation of the catenary and diagnose the causes of the catenary fault, a method of catenary state evaluation and diagnosis based on the principal component analysis control chart was proposed, which can make full use of the multidimensional detection parameters of the catenary. …”
    Get full text
    Article
  2. 22

    Study of Seasonal Variation in Groundwater Quality of Sagar City (India) by Principal Component Analysis by Hemant Pathak, S. N. Limaye

    Published 2011-01-01
    “…Results of principal component analysis evinced that all the parameters equally and significantly contribute to groundwater quality variations. …”
    Get full text
    Article
  3. 23

    A PRINCIPAL COMPONENT ANALYSIS OF KNOWLEDGE MANAGEMENT SUCCESS FACTORS IN CONSTRUCTION FIRMS IN NIGERIA by Taiwo Adegbembo, Oluwaseyi Awodele, Ayodeji Oke

    Published 2020-09-01
    Subjects: “…Critical success factors, Knowledge management, Principal component analysis, Nigeria…”
    Get full text
    Article
  4. 24
  5. 25

    An Improved Robust Principal Component Analysis Model for Anomalies Detection of Subway Passenger Flow by Xuehui Wang, Yong Zhang, Hao Liu, Yang Wang, Lichun Wang, Baocai Yin

    Published 2018-01-01
    “…In this method, an improved robust principal component analysis model is presented to detect anomalies; then ST-DBSCAN algorithm is used to group the station-level anomaly data on space-time dimensions to reveal the propagation law and potential impact of different anomaly events. …”
    Get full text
    Article
  6. 26

    Fault Diagnosis Method Based on Gap Metric Data Preprocessing and Principal Component Analysis by Zihan Wang, Chenglin Wen, Xiaoming Xu, Siyu Ji

    Published 2018-01-01
    “…Principal component analysis (PCA) is widely used in fault diagnosis. …”
    Get full text
    Article
  7. 27
  8. 28

    Subspace Method Aided Data-Driven Fault Detection Based on Principal Component Analysis by Lingling Ma, Xiangshun Li

    Published 2017-01-01
    “…In this paper, subspace method aided data-driven fault detection based on principal component analysis (PCA) is proposed. The basic idea is to use PCA to identify the system observability matrices from input and output data and construct residual generators. …”
    Get full text
    Article
  9. 29

    Supercritical fluid extraction and encapsulation of Rivas (Rheum ribes) flower: Principal component analysis (PCA) by Seyyed Ali Hoseini, Mohsen Vazifedoost, Bahareh Hajirostamloo, Zohreh Didar, Mohamad Mehdi Nematshahi

    Published 2025-01-01
    “…The current study aims to extract Rivas (Rheum ribes) flower using the ethanol modified supercritical CO2 (SCO2-EOH) method; analyze its chemical compounds and bioactivity, encapsulate the extract in maltodextrin, gum-Arabic (GA), and their combination (GA + MD) using the spray drying method and investigate the differences among microparticles using Principal Component Analysis (PCA). The Rivas extract obtained by the SCO2-EOH method was a rich source of unsaturated fatty acids (mainly linoleic acid: 57.58 %), phytosterols (mainly sitosterol: 197.02 and campesterol: 144.47 mg/100g), terpenoids (mainly camphor: 17.52 %; and 1,8-cineol: 10.91 %) and phenolics (mainly m-coumaric acid: 48.22; luteolin: 38.07 and gallic acid: 26.25 mg/g). …”
    Get full text
    Article
  10. 30
  11. 31
  12. 32
  13. 33
  14. 34
  15. 35
  16. 36
  17. 37

    The Use of Principal Component Analysis for Reduction in Sleep Quality and Quantity Data in Female Professional Soccer by Eider Barba, David Casamichana, Pedro Figueiredo, Fábio Yuzo Nakamura, Julen Castellano

    Published 2024-12-01
    “…The main aim of the present study was to uncover multivariate relationships between sleep quantity and quality using principal component analysis (PCA) in professional female soccer players. …”
    Get full text
    Article
  18. 38

    Driven Factors Analysis of China’s Irrigation Water Use Efficiency by Stepwise Regression and Principal Component Analysis by Renfu Jia, Shibiao Fang, Wenrong Tu, Zhilin Sun

    Published 2016-01-01
    “…It combines multiple stepwise regression (MSR) and principal component analysis (PCA) to obtain more realistic results. …”
    Get full text
    Article
  19. 39

    Comparison of principal component analysis algorithms for imputation in agrometeorological data in high dimension and reduced sample size. by Valter Cesar de Souza, Sergio Augusto Rodrigues, Luís Roberto Almeida Gabriel Filho

    Published 2024-01-01
    “…The aim of this study was to evaluate the performance of alternative multivariate procedures for principal component analysis (PCA), using the Nonlinear Iterative Partial Least Squares (NIPALS) and Expectation-Maximization (EM) algorithms, for imputing missing data in time series of meteorological variables. …”
    Get full text
    Article
  20. 40

    Improving stroke risk prediction by integrating XGBoost, optimized principal component analysis, and explainable artificial intelligence by Lesia Mochurad, Viktoriia Babii, Yuliia Boliubash, Yulianna Mochurad

    Published 2025-02-01
    “…To improve stroke risk prediction models in terms of efficiency and interpretability, we propose to integrate modern machine learning algorithms and data dimensionality reduction methods, in particular XGBoost and optimized principal component analysis (PCA), which provide data structuring and increase processing speed, especially for large datasets. …”
    Get full text
    Article