HIERARCHICAL CLUSTERING

  • Single linkage
  • Complete linkage
  • Average linkage
  • Ward’s linkage (including Ward’s method)
  • Weighted-average linkage
  • Centroid linkage
  • Median linkage

NONHIERARCHICAL

  • Kmeans
  • Kmedians

CLUSTER ON OBSERVATIONS

 

CLUSTER USING ANY DISSIMILARITY MATRIX

 

DENDROGRAMS

  • Full trees
  • Subtrees
  • Upper portion of tree
  • Vertical or horizontal orientation
  • Branch counts

STOPPING RULES

  • Calínski and Harabasz pseudo-F index
  • Duda and Hart Je(2)/Je(1) index

SUPPORT TOOLS

  • Generate summary and grouping variables
  • Attach notes to analyses

SIMILARITY/DISSIMILARITY MEASURES FOR CONTINUOUS DATA

  • L2/Euclidean
  • L1/absolute/cityblock/manhattan

 

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  • L(#)
  • Canberra
  • Correlation
  • Angular

SIMILARITY/DISSIMILARITY MEASURES FOR BINARY DATA

  • Matching
  • Jaccard
  • Russell
  • Hamann
  • Dice
  • Antidice
  • Sneath
  • Rogers
  • Ochiai
  • Yule
  • Anderberg
  • Kulczynski
  • Gower2
  • Pearson

GOWER MEASURE FOR MIXED BINARY AND CONTINUOUS DATA

 

RESULT-MANAGEMENT UTILITIES

  • Directory-style listing
  • Detailed listing of clusters
  • Drop cluster analyses
  • Mark a cluster analysis as the most recent one
  • Rename a cluster

USER-EXTENSIBLE COMMANDS

  • Ability to add new clustering methods and utilities
  • Full set of tools to ease making additions