Welcome to multi 2015

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As interest in multi-level modelling grows, and the range of multi-level modelling tools expands, there is an urgent need to consolidate the key principles of the paradigm and clarify the essential differences between various approaches. This second two-day incarnation of the MULTI workshop series therefore aims to continue the community building that was successfully initiated in the 1st International Workshop on Multi-Level Modelling held in Valencia in 2014. Although multi-level modeling has now been used successfully in a variety of industrial projects and standards definition initiatives, there is still no clear consensus on what the paradigm actually entails and what the best practices are for applying it. For example, there are still diverging views on whether it is sound to combine instance facets and type facets into so-called clabjects, whether the principles of strict meta-modelling are too restrictive, and if they are, what alternative principles should be used to establish sound multi-level hierarchies. This lack of a foundational consensus is mirrored by the lack of a common focus in the currently available multi-level tools. Until these differences are resolved and the principles and practices of the approach are placed on a solid foundation, multi-level modelling will remain a niche technology and its user base will remain relatively small.

As a follow up of the workshop, we have set up a wiki on Multi-Level Modelling. Feel free to contribute!