Hierarchical Cluster Analysis (HCA)

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  1. Identify clusters (items) with closest distance
  2. Join them to new clusters
  3. Compute distance between clusters (items)
  4. Return to step 1

The HCPC (Hierarchical Clustering on Principal Components) approach allows us to combine the three standard methods used in multivariate data analyses (Husson, Josse, and J. 2010):