From simple structure to sparse components: a review

Trendafilov, Nickolay T. (2014). From simple structure to sparse components: a review. Computational Statistics, 29(3-4) pp. 431–454.

DOI: https://doi.org/10.1007/s00180-013-0434-5

Abstract

The article begins with a review of the main approaches for interpretation the results from principal component analysis (PCA) during the last 50–60 years. The simple structure approach is compared to the modern approach of sparse PCA where interpretable solutions are directly obtained. It is shown that their goals are identical but they differ by the way they are realized. Next, the most popular and influential methods for sparse PCA are briefly reviewed. In the remaining part of the paper, a new approach to define sparse PCA is introduced. Several alternative definitions are considered and illustrated on a well-known data set. Finally, it is demonstrated, how one of these possible versions of sparse PCA can be used as a sparse alternative to the classical rotation methods.

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