Introduction: Pattern Recognition
Numerical Cruncher User's Guide
Supervised Learning: Classification
Unsupervised Learning: Clustering
crunch [from The Jargon File]: vi. To process, usually in a time-consuming or complicated way. Connotes an essentially trivial operation that is nonetheless painful to perform. The pain may be due to the triviality's being embedded in a loop from 1 to 1,000,000,000.