Faults detection and identification in PV array using kernel principal components analysis

2021 ◽  
Author(s):  
Salomé Ndjakomo Essiane ◽  
Patrick Juvet Gnetchejo ◽  
Pierre Ele ◽  
Zhicong Chen
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Pv Array ◽  
Detection And Identification ◽  
Components Analysis ◽  
Kernel Principal Components Analysis

Face Recognition Algorithm Based on Kernel Collaborative Representation

2013 ◽  
Vol 756-759 ◽  
pp. 3590-3595
Author(s):  
Liang Zhang ◽  
Ji Wen Dong
Keyword(s):  
Face Recognition ◽  
Principal Components Analysis ◽  
Principal Components ◽  
Recognition Algorithm ◽  
Experimental Results ◽  
Collaborative Representation ◽  
Nonlinear Structures ◽  
Components Analysis ◽  
Kernel Principal Components Analysis ◽  
The Relationship

Aiming at solving the problems of occlusion and illumination in face recognition, a new method of face recognition based on Kernel Principal Components Analysis (KPCA) and Collaborative Representation Classifier (CRC) is developed. The KPCA can obtain effective discriminative information and reduce the feature dimensions by extracting faces nonlinear structures features, the decisive factor. Considering the collaboration among the samples, the CRC which synthetically consider the relationship among samples is used. Experimental results demonstrate that the algorithm obtains good recognition rates and also improves the efficiency. The KCRC algorithm can effectively solve the problem of illumination and occlusion in face recognition.

Kernel principal components based cascade forest towards disease identification with human microbiota

2020 ◽  
Author(s):  
Jiayu Zhou ◽  
Xuwen Wang ◽  
Yanqing Ye ◽  
Jiang Jiang
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Human Disease ◽  
Analysis Method ◽  
Human Microbiota ◽  
Disease States ◽  
Disease Identification ◽  
Deep Forest ◽  
Components Analysis ◽  
Kernel Principal Components Analysis

Abstract Numerous pieces of clinical evidence have shown that many phenotypic traits of human disease are related to their gut microbiome. Through supervised classification, it is feasible to determine the human disease states by revealing the intestinal microbiota compositional information. However, the abundance matrix of microbiome data is so sparse, an interpretable deep model is crucial to further represent and mine the data for expansion, such as the deep forest. What's more, overfitting can still exist in the original deep forest model when dealing with such “large p, small n” biology data. Feature reduction is considered to improve the ensemble forest model especially towards the disease identification in the human microbiota. In this work, we propose the kernel principal components based cascade forest method, so-called KPCCF, to classify the disease states of patients by using taxonomic profiles of the microbiome at the family level. In detail, the kernel principal components analysis method is first used to reduce the original dimension of human microbiota datasets. Besides, the processed data is fed into the cascade forest to preliminarily discriminate the disease state of the samples. Thus, the proposed KPCCF algorithm can represent the small-scale and high-dimension human microbiota datasets with the sparse feature matrix. Systematic comparison experiments demonstrate that our method consistently outperforms the state-of-the-art methods with the comparative study on 4 datasets. Additionally, compared to other dimensionality reduction methods, the kernel principal components analysis method is more suitable for microbiota datasets.

Kernel principal components based cascade forest towards disease identification with human microbiota

2020 ◽  
Author(s):  
Jiayu Zhou ◽  
Xuwen Wang ◽  
Yanqing Ye ◽  
Jiang Jiang
Keyword(s):  
Principal Components Analysis ◽  
Principal Components ◽  
Human Disease ◽  
Analysis Method ◽  
Human Microbiota ◽  
Disease States ◽  
Disease Identification ◽  
Deep Forest ◽  
Components Analysis ◽  
Kernel Principal Components Analysis

Abstract Numerous pieces of clinical evidence have shown that many phenotypic traits of human disease are related to their gut microbiome. Through supervised classification, it is feasible to determine the human disease states by revealing the intestinal microbiota compositional information. However, the abundance matrix of microbiome data is so sparse, an interpretable deep model is crucial to further represent and mine the data for expansion, such as the deep forest. What's more, overfitting can still exist in the original deep forest model when dealing with such “large p, small n” biology data. Feature reduction is considered to improve the ensemble forest model especially towards the disease identification in the human microbiota. In this work, we propose the kernel principal components based cascade forest method, so-called KPCCF, to classify the disease states of patients by using taxonomic profiles of the microbiome at the family level. In detail, the kernel principal components analysis method is first used to reduce the original dimension of human microbiota datasets. Besides, the processed data is fed into the cascade forest to preliminarily discriminate the disease state of the samples. Thus, the proposed KPCCF algorithm can represent the small-scale and high-dimension human microbiota datasets with the sparse feature matrix. Systematic comparison experiments demonstrate that our method consistently outperforms the state-of-the-art methods with the comparative study on 4 datasets. Additionally, compared to other dimensionality reduction methods, kernel principal components analysis method is more suitable for microbiota datasets.

Sign in / Sign up

Export Citation Format

Share Document