A Technique for Computer Detection and Correction of Spelling Errors* The method described assumes that a word which cannot be found in a dictionary has at most one error, which might be a wrong, missing or extra letter or a single transposition. The unidentified input word is compared to the dictionary again, testing each time to see if the words match-assuming one of these errors occurred. During a test run on garbled text, correct identifications were made for over 95 percent of these error types. CACM March, 1964 Damerau, F. J. CA640320 JB March 10, 1978 2:21 AM 1112 4 1112 1592 4 1112 2111 4 1112 2339 4 1112 440 4 1112 1112 5 1112 1112 5 1112 1112 5 1112 1592 5 1112 2111 5 1112 2339 5 1112 619 5 1112 830 6 1112 982 6 1112 1112 6 1112 1112 6 1112 1112 6 1112 1592 6 1112 1592 6 1112 440 6 1112 619 6 1112 619 6 1112 619 6 1112