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Deborah A. Sadowski ，Mark R. Grabau
# p5 Y& B& D( E. x; _There's a common misconception that performing a simulation study involves a sequence of steps (e.g., project definition, model formulation, verification, validation, analysis). To the contrary, all elements of a simulation project should be performed repeatedly throughout the effort, / L( a" k: p0 r0 b
growing in scope as the model progresses. 6 C8 v k! {+ z6 ?* n, }# J7 Q
In the traditional view, projects suffer from too strong a focus on the model (and perhaps the animation), so that after the inevitable delays and problems, there's no time left to run scenarios. Instead, the analyst is faced with a presentation deadline that's firm and little time to experi-* E9 i$ q, }3 L) @& P1 ]$ t% d3 R
ment, analyze, or think. . ]' C+ r# e9 u) m5 X
Instead, you should schedule the project in complete phases. Intermediate milestones, spaced no more than about two weeks apart in a medium to large project, should include specific goals for the model, animation, data, and analysis. By the time you reach the last 25% of your time on the project, you should have addressed the basic analysis issues of run length, warm-up time, etc. and should already have performed preliminary analysis on the model for a number of different scenarios. |
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发表于 2009-7-16 16:27:37
