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Data-driven multi-fault detection in pipelines utilizing frequency response function and artificial neural networks
Published 2025-03-01Subjects: Get full text
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Effect of Roasting on Endogenous Functional Components and Antioxidant Activity of Walnuts with Shells
Published 2025-06-01“…After roasting, the acid value and peroxide value of walnuts were within the specified range by the Codex Alimentarius Commission (CAC). Principal component analysis (PCA) and hierarchical cluster analysis (HCA) showed that moderate roasting (140 ℃, 60 min) improved the endogenous functional composition and antioxidant capacity of walnuts. …”
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Spatial and Temporal Distribution Characteristics of Water Quality in Beiluo River and Pollution Sources Based on Principal Component Analysis
Published 2022-08-01“…[Methods] The main pollution indicators of the Beiluo River were screened and evaluated using principal component analysis and a comprehensive water quality identification index method according to the law of intra-annual distribution of water volume in the Beiluo River. …”
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Enhanced intrusion detection model based on principal component analysis and variable ensemble machine learning algorithm
Published 2024-12-01“…Several IDS models have various security problems, such as low detection accuracy and high false alarms, which can be caused by the network traffic dataset's excessive dimensionality and class imbalance in the creation of IDS models. Principal Component Analysis (PCA) has proven to be a helpful feature selection technique for dimensionality reduction. …”
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Cutting-Edge Approaches in the Co-Amorphization Process
Published 2025-06-01Subjects: Get full text
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Assessing Roles of Aggregate Structure on Hydraulic Properties of Saline/Sodic Soils in Coastal Reclaimed Areas
Published 2024-12-01Subjects: Get full text
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SVM-Based Optical Detection of Retinal Ganglion Cell Apoptosis
Published 2025-01-01Subjects: Get full text
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Screening and comprehensive evaluation of low nitrogen tolerance of Zhejiang photosensitive japonica rice cultivars
Published 2016-09-01Subjects: Get full text
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Testing a New Star Formation History Model from Principal Component Analysis to Facilitate Spectral Synthesis Modeling
Published 2025-01-01“…In addition to some commonly used SFH models (Γ, τ , and nonparametric), we also examine a model developed from principal component analysis (PCA), trained by a set of SFHs from IllustrisTNG. …”
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A Novel Double Cluster and Principal Component Analysis-Based Optimization Method for the Orbit Design of Earth Observation Satellites
Published 2017-01-01“…To address these two problems, a cluster and principal component analysis-based optimization method (CPC-based OM) is proposed, in which many candidate orbits are gradually randomly generated until the optimal orbit is obtained using a data mining method, that is, cluster analysis based on principal components. …”
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Reduction of Spike-like Noise in Clinical Practice for Thoracic Electrical Impedance Tomography Using Robust Principal Component Analysis
Published 2025-04-01“…To address this issue, we propose a robust Principal Component Analysis (RPCA)-based approach that models EIT data as the sum of a low-rank matrix and a sparse matrix. …”
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Assessment of visual function under various lighting conditions in a cohort of active older drivers: dimensionality and principal metrics
Published 2025-04-01“…Additionally, VA and CSF were assessed in the presence of glare under mesopic condition. Correlations and principal component analysis (PCA) were conducted to identify principal visual function metrics.ResultsVA and CSF exhibited variation across lighting conditions (ps < 0.005), with significant correlations observed between multiple pairs of visual functions. …”
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Functional Data Analysis in Forecasting Serbian Fertility
Published 2011-09-01“… A new approach, combining functional data analysis and principal components decomposition in order to forecasting demographic rates, introduced recently by Hyndman and his associates, is tested on official data series of Serbian age-specific fertility rates available for period 1950-2009. …”
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Functional data analysis in forecasting Serbian fertility
Published 2011-01-01“…A new approach, combining functional data analysis and principal components decomposition in order to forecasting demographic rates, introduced recently by Hyndman and his associates, is tested on official data series of Serbian age-specific fertility rates available for period 1950-2009. …”
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Comprehensive Assessment of Technological Challenges In Photovoltaic Waste Recovery In India Using Principal Component Analysis and Analytic Hierarchy Process Models
Published 2025-04-01“…This study presents a smart multi‐criteria decision‐making (MCDM) approach that integrates Principal Component Analysis (PCA) and the Analytic Hierarchy Process (AHP) to assess technological challenges in PV waste management. …”
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Application of Functional Data Analysis in Complex Human Movement Analysis
Published 2025-04-01“…This study clarifies the relevant concepts and basic processes of functional data analysis, outlines the computational framework of functional principal component analysis, and focuses on exploring its applications in sports science, clinical rehabilitation, and motor development. …”
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Klasifikasi Aktivitas Manusia Menggunakan Algoritme Computed Input Weight Extreme Learning Machine dengan Reduksi Dimensi Principal Component Analysis
Published 2022-12-01“…Salah satu metode yang dapat digunakan untuk mengurangi dimensi fitur dari sebuah data adalah Principal Component Analysis (PCA), dan salah satu metode klasifikasi yang dapat digunakan adalah Computed Input Weight Extreme Learning Machine (CIW-ELM). …”
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Research on FTTR WLAN indoor wireless location algorithm based on frequency response
Published 2023-09-01“…Highly accurate and reliable indoor wireless positioning services have been widely used.In order to obtain good positioning accuracy, the design of positioning algorithms needs to be matched with wireless positioning facilities.fiber to the room (FTTR) is an indoor access network solution based on IEEE 802.11 ax, a new generation of wireless local area network (WLAN) standard.Compared with the existing Wi-Fi networks, FTTR has a much larger available band width.However, FTTR WLAN also lacks of a public valid data set to support localization functions, which makes the localization research based on FTTR scenarios face huge obstacles.In order to solve the above problems, firstly, a frequency response-based FTTR scene dataset generation method was proposed, which uses the existing Wi-Fi localization dataset to generate the frequency response matrix within the available band width of FTTR.Then, the parallel path principal component analysis (PCA) method was used to generate the classification matrix.And the generated dataset was trained using a fully connected neural network to improve the accuracy.The experimental results on the real measurement dataset show that the proposed localization algorithm can achieve a localization accuracy of less than 1 m, which is not only more accurate than the traditional location estimation algorithm, but also basically meets the fine-grained localization requirements for practical applications.…”
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