It could be used, for example, to choose spleen neoplasms from concept class C0751521 as the translation of Milztumoren.
since such a distinction between the different lexicalizations of a given concept is beyond the scope of the current paper, we make the additional simplifying assumption that, given a concept class, the target word t is independent of the source word s, which leads to the simplified formula: The above equation views the thesaurus as a trellis linking source and target words.