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Publication TypeJournal Article
Year of Publication2014
AuthorsZhang, J, Heckman, N, Cubranic, D, Kingsolver, JG, Gaydos, T, Marron, JS
Date PublishedDEC
Type of ArticleArticle
AbstractPrincipal Components Analysis (PCA) is a common way to study the sources of variation in a high-dimensional data set. Typically, the leading principal components are used to understand the variation in the data or to reduce the dimension of the data for subsequent analysis. The remaining principal components are ignored since they explain little of the variation in the data. However, the space spanned by the low variation principal components may contain interesting structure, structure that PCA cannot find. Prinsimp is an R package that looks for interesting structure of low variability. ``Interesting'' is defined in terms of a simplicity measure. Looking for interpretable structure in a low variability space has particular importance in evolutionary biology, where such structure can signify the existence of a genetic constraint.