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1 results

  • On the Partitioning of Squared Euclidean Distance and its Applications in Cluster Analysis

  • Randy L. Carter, Robin Morris, Roger K. Blashfield
  • Journal:
    Psychometrika / Volume 54 / Issue 1 / March 1989
    Published online by Cambridge University Press:
    01 January 2025, pp. 9-23

  • The partitioning of squared Eucliean distance between two vectors in M-dimensional space into the sum of squared lengths of vectors in mutually orthogonal subspaces is discussed and applications given to specific cluster analysis problems. Examples of how the partitioning idea can be used to help describe and interpret derived clusters, derive similarity measures for use in cluster analysis, and to design Monte Carlo studies with carefully specified types and magnitudes of differences between the underlying population mean vectors are presented. Most of the example applications presented in this paper involve the clustering of longitudinal data, but their use in cluster analysis need not be limited to this arena.