Spellchecker Sylvie THOUËSNY School of Applied Language and Intercultural Studies, Dublin City University, Ireland sylvie.thouesny@icall-research.net Abstract A University of Pittsburgh study states that using the spellcheck button can create problems for those who rely too heavily on the software. Spelling checker should just be a flag indicating that some errors could occur at some stage, but certainly not a systematic way to correct text. Even if the purpose of Computational Linguistics is to be very close of human minds, we still have to think by ourselves. This paper is an approach to present how probabilities can be used in order to generate suggestions for misspelt words. SpellChecker, as its name indicates, is a spell checker. It is written in Java and is easy to use. It looks at single error and generates a list of candidates for non-word errors. Based on existing algorithms, SpellChecker detects deletion, substitution, reversal or insertion errors according to the dictionary in use. Candidates are computed according to probabilities and sorted by the most likely. The user has the possibility to replace the misspelt word suggested or simply ignore it.

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