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Behaviormetrika https://doi.org/10.1007/s41237-019-00092-6 PREFACE 1 2 3 Michel van de Velden · Alfonso Iodice D’Enza · Michio Yamamoto © The Behaviormetric Society 2019 Dimension reduction and cluster analysis have a long history in multivariate data analysis. Dimension reduction methods typically concern themselves with a reduc- tion in the variable space through either selection of variables or the construction of new variables as combinations of the original ones. Cluster analysis aims to detect groups of similar observations thus reducing the row space. Although these meth- ods typically consider different objective functions, the ultimate goals, e.g., detect- ing and summarizing relevant properties and relationships in the data, are typically similar if not identical. Consequently, dimension reduction and cluster analysis are frequently combined. One way to combine dimension reduction and cluster analysis is to perform the analyses sequentially. In particular, a common procedure is to first perform dimen- sion reduction and then apply cluster analysis to the reduced data. However, Bock (1987), Van Buuren and Heiser (1989) and De Soete and Carroll (1994), already observed that such sequential analyses may not be optimal due to the differences between the objective functions corresponding to the dimension reduction and cluster analysis parts. An alternative to such sequential methods, is to formulate
Behaviormetrika – Springer Journals
Published: Sep 13, 2019
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