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The detection of textual variants is a crucial step in Classical Philology. It represents both the first stage of collation and the preliminary phase for recognising quotation and text reuse in the indirect tradition. As digital tools can improve the mechanical stage of textual comparison, the interaction between automated process and traditional philological methods is in this case very promising.
iAligner performs pairwise intralanguage syntaxbased automatic alignment on Ancient Greek, Latin and English, and it is now being tested on other languages. Texts are aligned at line or sentence level, at any length chosen by the user. They are then converted to vectors of single tokens, and pairwise alignment is performed through Needleman-Wunsch algorithm. Additional languagedependent criteria can be established by the user for further refinement, according to the purpose of the alignment: nonalphabetical characters and diacritics can be ignored, the alignment can be set as case sensitive and Levensthein distance metric can be applied to adjust the tolerance threshold.