Method and device for ontological evolution

A computer-implemented method for modifying a mapping from at least one application path of a data system used by a software application to a conceptual path system ontology linked with said system data, directing said application path May 1 part the structure of said system data and routing said conceptual route a part of the system structure ontology, said method comprising the steps of - detecting a change in a part of the structure of the system ontology is addressing one or more of said conceptual routes, said change level change base lexon level or base pattern, said base lexon a set of lexones each defining lexon a relationship between two terms in a given context, said base pattern a set of semantic patterns defined by a selection of routes conceptual in said base and a set of lexon semantic constraints on said selected conceptual routes, describing such change by an ordered sequence of first operators defining semantic information about the change, - define one or more second operators operating in said mapping, said one or more second operators equivalent to that first one or more operators used to describe the change in said portion of the structure of the system ontology, - update said mapping said one or more second operators equivalent to reflect the change in said part of the system structure ontology.