 data Dendrogram a
 = Leaf a
  Branch !Distance (Dendrogram a) (Dendrogram a)
 data Linkage
 = SingleLinkage
  CompleteLinkage
  CLINK
  UPGMA
  FakeAverageLinkage
 type Distance = Double
Documentation
data Dendrogram a Source
Data structure for storing hierarchical clusters. The
distance between clusters is stored on the branches.
Distances between leafs are the distances between the elements
on those leafs, while distances between branches are defined
by the linkage used (see Linkage
).
Leaf a  The leaf contains the item 
Branch !Distance (Dendrogram a) (Dendrogram a)  Each branch connects two clusters/dendrograms that are

Functor Dendrogram  Does not recalculate the distances! 
Foldable Dendrogram  
Traversable Dendrogram  
Eq a => Eq (Dendrogram a)  
Ord a => Ord (Dendrogram a)  
Show a => Show (Dendrogram a) 
The linkage type determines how the distance between clusters will be calculated. These are the linkage types currently available on this library.
SingleLinkage  The distance between two clusters 
CompleteLinkage  The distance between two clusters 
CLINK  The same as 
UPGMA  Unweighted Pair Group Method with Arithmetic mean, also
called "average linkage". The distance between two
clusters 
FakeAverageLinkage  This method is usually wrongly called "average linkage".
The distance between cluster
