Authors:
Lekaa Ali Muhamed,Hayder Yahya mohammed,DOI NO:
https://doi.org/10.26782/jmcms.2019.08.00024Keywords:
High-dimensional data,outlier detection,kernel principal component analysis(KPCA),FastHCS (High-dimensional Congruent Subsets),Abstract
When dealing with multivariate data with higher dimensions, we often use principal component analysis (PCA) to lessen the dimensions, but in the case of nonlinear data it is not possible to deal with classic estimated because of obtaining misleading results and therefore using kernel methods , when data contain outliers the results of the kernel pca (KPCA) for correlation matrix or variance covariance matrix are inaccurate. The aim of this research is to employ Robust KPCA (RKPCA) to solve nonlinear data using kernel function and outlier observation using Robust method termed as FastHCS (High-dimensional Congruent Subsets) that stands for a robust PCA algorithm appropriate for high-dimensional appliances to know the most effect variables on the phenomenon.Refference:
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