Abstract: Disclosed is a computer-implemented method for comparing text documents. The method comprises building a database comprising first text document data associated with a plurality of first text documents. The method further comprises receiving a query. The method also comprises converting the query to second text document data. The method further comprises comparing second text document data to first text document data and computing at least one similarity measure between second text document data and first document data. Further disclosed is a computer-implemented method for processing of similarities in text documents. The method comprises harmonizing at least one incoming query. It further comprises normalizing the at least one incoming harmonized query. The method also comprises constructing at least one query vector using the at least one normalized harmonized query.