The models of analysis and design methods are ocmpex and hte number so ftheir ocncpets are high.furthermore,news versions of these mehtods apperar every isx months.How to follow the successive versions of th moedls of these mehtods? How to create customized verison of these models? To anwwer to these two quesitons,we propsoe to represent models with harts of conepts.THese harts allow to select.create,delete,and modify ocncpets by knowking impacts of these operitns.they also allow oto verify a modle by searchign nonl connected sub-sets of concepts and circuits between defintins of concepts.In this paper we exliain how to represent versions,news and illustrate our porposeitin we hsow charts of concepts of the version 1.1 of the Unigid Modeling Language.
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