The initial decision matrix (IDM) and its fundamental role in modelling a scenario

© Springer Nature Switzerland AG 2019. This chapter is mainly devoted to a critical task: modelling a scenario. It addresses two main aspects: (a)Elements of the IDM(b)How to model a scenario Naturally, it is impossible in the second aspect to deal with the innumerable cases that correspond to a myriad of different projects and scenarios. The chapter aims at providing as much information as possible and as being a guide for the practitioner. It condenses conclusions from the examination of many cases proposed by researchers and practitioners around the world and using different methods and procedures. From here, the authors extracted critical aspects that should be considered. All these points lead to the formulation of a sound and realistic modelling that replicates a scenario as close as possible.