Given the nature of the corpora provided for the 1st International Competition on Plagiarism Detection, we cannot apply them to test a speller sys-tem given that the plagiarisms are automatically generated and therefore they do not contain misspellings (Potthast et al., 2009).
there-fore, it would be beneficial to apply a spell corrector over the documents in our corpora, such as the one described in (Gao et al., 2010).