Further references
Bayesian classification, clustering
Cheeseman, P., Stutz, J., Self, M., Taylor, W., Goebel, J., Volk, K., and Walker, H. 1989. Automatic Classification of Spectra From the Infrared Astronomical Satellite (IRAS), NASA Reference Publication #1217, National Technical Information Service, Springfield, Virginia.
Goebel, J., Volk, K., Walker, H., Gerbault, F., Cheeseman, P., Self, M., Stutz, J., and Taylor, W.: 1989, `A Bayesian Classification of the IRAS LRS Atlas', Astron.Astrophys., 222, L5.