3
Noisy channel model
Dictionary
Misspeller
Bayes’ Rule
I feel obligated to present this slide.  I’m going to use the technical term “good” for the correct spelling of a word and “bad” for the misspelled version of the word.  The equation on the lower right needs to be solved by searching through all the good words for the maximum value of the expression with the help of a dictionary and a misspeller, which is also a technical term.