Deep SpellingI implemented my first spelling corrector years ago based on Peter Norvig’s excellent tutorial — a spelling corrector in 21 lines of Python code. And it sucked. So I tried to fix it. I piled on double metaphone phonetic similarity, unicode support, multi-word expressions, weighted Damerau-Levenshtein edit-distance, efficient Trie and smart caching. And it still sucked. And the reason it failed to
