The key ideas behind ContrastMedium are: • Identification of important topological clues from the companion knowledge base KB in order to hierarchically sort the concepts in G. For our purposes, KB is expected to be able to provide ground-truth taxonomic relations that can be safely projected onto G to guide the cleaning process: that is, we assume it to be reasonably clean.
we do not make any assumption on how KB has been created: our approach can be used with either manually created taxonomies like WordNet or (semi-)automatically induced ones, provided they are of sufficient quality.