A new approach to find the underlying structure of a multidimensional data cloud is proposed, which is based on a localized version of principal components analysis. More specifically, we calculate a series of local centers of mass and move through the data in directions given by the first local principal axis. One obtains a smooth "local principal curve" passing through the "middle" of a multivariate data cloud. The concept adopts to branched curves by considering the second local principal axis. Since the algorithm is based on a simple eigendecomposition, computation is fast and easy. © Springer-Verlag Berlin, Heidelberg 2005.
CITATION STYLE
Einbeck, J., Tutz, G., & Evers, L. (2005). Exploring multivariate data structures with local principal curves. In Studies in Classification, Data Analysis, and Knowledge Organization (pp. 256–263). Kluwer Academic Publishers. https://doi.org/10.1007/3-540-28084-7_28
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