A Five Level Hierarchy for the Management of Simulation Models
Abstract
This advanced tutorial describes the goal-driven automated generation of models
from a set of design specifications. A five level hierarchy is introduced which
supports the automated generation of both models and simulation experiments from
an abstract description of an overall design, and from an abstract description
of the goals of the simulation study. The aim is to be able to generate models
and experiments in a top-down fashion from a description of components and the
couplings between these components by automating the stepwise refinement
process. Detailed model descriptions are extracted from template files residing
in model libraries. The paper emphasizes on the problems encountered in the
automatic generation of continuous-system models since the synthesis of these
models is more involved than the synthesis of discrete--event models.
The paper starts with an assessment of the need for the proposed automated model
synthesis methodology. In the sequel, the advocated five level hierarchy will
be presented in a bottom-up fashion starting with classical approaches to
continuous-system simulation (the first and bottom layer of our hierarchy), and
advancing to higher and higher levels of abstraction. The paper ends with the
presentation of a complete example of the proposed methodology, now presented in
a top-down fashion.
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Last modified: June 20, 2005 -- © François Cellier