La contextualisation de modèles, une étape indispensable à un développement dirigé par les modèles ?

The MDA approach may be broadly reduced to the following lifecycle: defining platform independent business models and transforming them into platform dependent models for software implementation concerns. The NOCE team works in the Technology Enhanced Learning (TEL) area. One of its works aims to apply the MDA approach in TEL domain. This application presents two particularities: the versatility of the user who defines models, refines them and drives the corresponding software construction; the final automatic construction which has to contextualise the modelled dispositif within a platform already active and populated. The conducted experience has underlined several difficulties which are related to such approach. We bring out here problems which result from transformations between distinct metamodels and we propose some perspectives to reduce distance between business models and platforms. MOTS-CLÉS : MDA, fusion de métamodèles, transformation de modèles, contextualisation de modèles, expérimentation, EIAH, plateforme d’enseignement.