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• W3122100033 abstract "This paper considers a fast and effective algorithm for conducting functional principle component analysis with multivariate factors. Compared with the univariate case, our approach could be more powerful in revealing spatial connections or extracting important features in images. To facilitate fast computation, we connect Singular Value Decomposition with penalized smoothing and avoid estimating a huge dimensional covariance operator. Under regularity assumptions, the results indicate that we may enjoy the optimal convergence rate by employing the smoothness assumption inherent to functional objects. We apply our method on the analysis of brain image data. Our extracted factors provide excellent recovery of the risk related regions of interests in human brain and the estimated loadings are very informative in revealing the individual risk attitude." @default.
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• W3122100033 date "2017-08-01" @default.
• W3122100033 modified "2023-09-27" @default.
• W3122100033 title "Spatial Functional Principal Component Analysis with Applications to Brain Image Data" @default.
• W3122100033 hasPublicationYear "2017" @default.
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