In Section 5.1.1, we define the term action. We distinguish between actual and dummy actions and realistic and unrealistic actions and illustrate these concepts by continuing the Industrial Development example. In Section 5.1.2, we distinguish between a comprehensive action, the execution of which excludes the execution of any other action introduced in the model, and a fragmented action, which can be combined with other actions for joint execution in the framework of the final decision. We illustrate the distinction in the continuations of the Agricultural Development and Research Project examples.

In Section 5.2, we define a potential action as an action that is temporarily assumed to be possible for the decision aid. We also present the idea of the set of potential actions on which the decision aiding effort is based during a phase of the study, which we denote by A. We present the conditions of internal and external stability and define A as stable (fixed and permanent) when these conditions are fulfilled, and A as evolving (revisable or transitory) when they are not. The concepts of Section 5.2 are illustrated through continuations of the the Commuter Rail Line, Product Composition, and Engine Assignment examples.


Application Point External Stability Loan Application Comprehensive Conception Comprehensive Action 


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Copyright information

© Springer Science+Business Media Dordrecht 1996

Authors and Affiliations

  • Bernard Roy
    • 1
  1. 1.LAMSADEUniversité Paris-DauphineFrance

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