Abstract
ADditive CLUStering (ADCLUS) is a tool for overlapping clustering of two-way proximity matrices (objects × objects). In Simple Additive Fuzzy Clustering (SAFC), a variant of ADCLUS is introduced providing a fuzzy partition of the objects, that is the objects belong to the clusters with the so-called membership degrees ranging from zero (complete non-membership) to one (complete membership). INDCLUS (INdividual Differences CLUStering) is a generalization of ADCLUS for handling three-way proximity arrays (objects × objects × subjects). Here, we propose a fuzzified alternative to INDCLUS capable to offer a fuzzy partition of the objects by generalizing in a three-way context the idea behind SAFC. This new model is called Fuzzy INdividual Differences CLUStering (FINDCLUS). An algorithm is provided for fitting the FINDCLUS model to the data. Finally, the results of a simulation experiment and some applications to synthetic and real data are discussed.
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We would like to thank the Editor and four anonymous reviewers whose comments and criticisms helped us improve the quality of the paper.
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Giordani, P., Kiers, H.A. FINDCLUS: Fuzzy INdividual Differences CLUStering. J Classif 29, 170–198 (2012). https://doi.org/10.1007/s00357-012-9109-0
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DOI: https://doi.org/10.1007/s00357-012-9109-0