Dear James,
This is far from the complete story, but you might try my lecture notes
http://www.ccc.columbia.edu/lesson6-99.html
Best wishes,
Rich
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Richard A. Friedman, PhD
Associate Research Scientist
Herbert Irving Comprehensive Cancer Center Computer
and Informatics Resource Center
Lecturer
Department of Medical Informatics
Box 95, Room 130BB or P&S 1-420C
Columbia University
630 W. 168th St.
New York, NY 10032
(212)305-6901 (voice) (212)305-1667 (fax)
friedman at cuccfa.ccc.columbia.edu
"The alchemist wears a flat hat. We are Friedmans. I smell
an alchemist every day." -Rose Friedman, age 3