Computational Statistics & Data Analysis
Computational Biology and Chemistry
Multiple imputation in principal component analysis
Advances in Data Analysis and Classification
Computational Statistics & Data Analysis
An ExPosition of multivariate analysis with the singular value decomposition in R
Computational Statistics & Data Analysis
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An important problem in principal component analysis (PCA) is the estimation of the correct number of components to retain. PCA is most often used to reduce a set of observed variables to a new set of variables of lower dimensionality. The choice of this dimensionality is a crucial step for the interpretation of results or subsequent analyses, because it could lead to a loss of information (underestimation) or the introduction of random noise (overestimation). New techniques are proposed to evaluate the dimensionality in PCA. They are based on similarity measurements, singular value decomposition and permutation procedures. A simulation study is conducted to evaluate the relative merits of the proposed approaches. Results showed that one method based on the RV coefficient is very accurate and seems to be more efficient than other existing approaches.