Pre-processing is some form of data manipulation or data cleaning performed prior to the main data analysis algorithms. For example, in natural language processing this might involve stripping punctuation from text to turn it into a stream of words.
Used in Chap. 8: page 105; Chap. 9: pages 119, 125; Chap. 12: page 181; Chap. 14: pages 205, 214, 215, 217
Also known as pre-processor