Figure 4From: Breaking the hierarchy - a new cluster selection mechanism for hierarchical clustering methods(a) A simple clustering provides exactly one partition of the given set of entities. b) A hierarchical clustering method provides many partitions, each associated with a level. The lowest level number is normally associated with the whole data set, and each higher level provides a refinement of the lower level. Often, the highest level contains the partition consisting of all singletons, i.e., the single elements of the data set.Back to article page