[Haskell-cafe] ANNOUNCE: hierarchical-clustering and gsc-weighting

Felipe Lessa felipe.lessa at gmail.com
Tue Aug 3 06:51:03 EDT 2010


I'm pleased to announce the release of two new packages:


'hierarchical-clustering' provides a function to create a dendrogram
from a list of items and a distance function between them.  The most
common linkage types are available: single linkage, complete linkage
and UPGMA.  An item can be anything, for example a DNA sequence, so
this may used to create a phylogenetic tree.

Or it may be used with the 'gsc-weighting' package to assign weights
to the items.  Weights are assigned such that close items get smaller
weight than distance items, meaning that the weights try to avoid the
over-representation of some closely related items.  The package name
come from the authors of the algorithm, Gerstein, Sonnhammer and
Chothia.  Again, this may be used for DNA or protein sequences.



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