Information Technology Reference
In-Depth Information
Modeling phases
Phaseproducts
Phasefocus
Preliminary
Phase
Projectproposer
SponsorNeeds
Project
Objectives
Informalproblem
definition
Problem
Definition
Structured Problem
Definition
Model
Documen-
tation
Realsystem
information
System
Analysis
Conceptual
Model
Formal
Model
Modeling methods
Formalization
Solutiontechniques,
algorithms
Executable
Model
Implementation
Experimentdata,
configuration
Simulation
Results
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Experimentation
Interpretation
Results
Expert knowledge
Interpretation
Figure 2.1:
Generic model development process [77].
With regard to computer simulations, the results thus gained are
generally of quantitative nature. However, the interpretation of simu-
lation results with respect to the original system to answer the given
questions may be quantitative or qualitative.
2.1.3 Model development process
In order to be precise, the term
model
has to be refined and augmented
with additional information. In general,
the
model does not exist, but
rather a model always exists in different stages. These different stages
may best be explained following a generic model development process.
In [77, 106] a model development process is proposed that con-
sists of seven phases (see Figure 2.1). The
Sponsor Needs
mark the
