Hierarchical clustering a hierarchical clustering is often displayed graphically using a tree-like diagram called the dendrogram The dendrogram displays both the cluster-subcluster relationships and the order in which the clusters are merged (agglomerative or split (divisive) For sets of 2-d points a hierarchical clustering can also be graphically represented using a nested cluster diagram 8/20/2016 PATTERN RECOGNITIONHierarchical clustering A hierarchical clustering is often displayed graphically using a tree-like diagram called the dendrogram. The dendrogram displays both ◦ the cluster-subcluster relationships and ◦ the order in which the clusters are merged (agglomerative) or split (divisive). For sets of 2-D points, a hierarchical clustering can also be graphically represented using a nested cluster diagram. 8/20/2016 PATTERN RECOGNITION 43