algorithm

== cluster algorithm ==

http://condor.depaul.edu/ntomuro/courses/578/notes/notes-Clustering.html

http://en.wikipedia.org/wiki/Hierarchical_clustering

http://nlp.stanford.edu/IR-book/html/htmledition/hierarchical-agglomerative-clustering-1.html

== HMM ==

http://www.cs.umd.edu/~djacobs/CMSC828/HMMs.pdf

== in chemistry == 

http://www.daylight.com/meetings/emug96/john_barnard/emug96.html