of features such as the integration of a compara-
tive database, the length and complexity of these
developments has not yet been quantified.
Thus, the methodology proposed in this paper is still
at an ideal level. However, it can make a precise state-
ment of requirements and necessary developments.
These are all avenues of research to explore.
Another point to develop is how stakeholders will
interact with to the function graph. There are different
technologies for multiuser interaction (Kadri 2007).
However, the challenge is to propose a suitable solu-
tion for all stakeholders, for their vision of the design
vision, their vocabulary or to their field of competence
(Segonds 2011).
5 CONCLUSION
The methodology we propose will therefore allow to
design