========================================================= mltheory/jjpr/01_02.html 01_02 process of pattern recognition ========================================================= <Real world> <measuring sensor> camera for image voice recorder for voice gravity sensor ... <preprocessing> removes noise extracts feature you want normalization (to make result of measurement come in same way, result of measure shouldn't change whenever measurement) <reduce dimensionality> too many features can't be handled easily so you choose several features which you really need <recognition, prediction> Based on questions, you can use various algorithms classification regression clustring descriptive <select model> cross validation bootstraping <analyze result>