A processing method for classification (300) of contents (400) in a domain (500; 501) that can be represented through a taxonomy is described, the method comprising: generating (301) a first digital mathematical representation of the taxonomy; generating (302) a second digital mathematical representation of text documents (600) different from said contents and containing keywords; processing (303) the first and second digital mathematical representations for enriching the taxonomy, by associating keywords of the text documents (600) with the first digital mathematical representation; generating (304) a third digital mathematical representation of the contents (400); processing (305) the first digital enriched mathematical representation and third mathematical representation for classifying the contents (400) in the enriched taxonomy.
