Describe the general process of simulation. List some of the major advantages of simulation over optimization and vice versa. Many computer games can be considered visual simulation. Please explain why. with references
#General Process of Simulation-
1.Problem Definition
The initial step involves defining the goals of the study and
determing what needs to be solved. The problem is further defined
through objective observations of the process to be studied. Care
should be taken to determine if simulation is the appropriate tool
for the problem under investigation.
2.Project Planning
The tasks for completing the project are broken down into work
packages with a responsible party assigned to each package.
Milestones are indicated for tracking progress. This schedule is
necessary to determine if sufficient time and resources are
available for completion.
3.System Definition
This step involves identifying the system components to be modeled
and the preformance measures to be analyzed. Often the system is
very complex, thus defining the system requires an experienced
simulator who can find the appropriate level of detail and
flexibility.
4.Model Formulation
Understanding how the actual system behaves and determining the
basic requirements of the model are necessary in developing the
right model. Creating a flow chart of how the system operates
facilitates the understanding of what variables are involved and
how these variables interact.
5.Input Data Collection & Analysis
After formulating the model, the type of data to collect is
determined. New data is collected and existing data is gathered.
Data is fitted to theoretical distributions.
6.Model Translation
The model is translated into programming language. Choices range
from general purpose languages such as fortran or simulation
programs such as Arena.
7.Verification & Validation
Verification is the process of ensuring that the model behaves as
intended, usually by debugging or through animation. Verification
is necessary but not sufficient for validation, that is a model may
be verified but not valid. Validation ensures that no significant
difference exists between the model and the real system and that
the model reflects reality. Validation can be achieved through
statistical analysis. Additionally, face validity may be obtained
by having the model reviewed and supported by an expert.
8.Experimentation & Analysis
Experimentation involves developing the alternative model,executing
the simulation runs, and statistically comparing the alternative
system performance with that of the real system.
9.Documentation & Implementation
Documentation consists of the written report and presentation. The
results and implications of the study are discussed. The best
course of action is identified, recommended, and justified.
#Advantages-
-Simulation is best suited to analyze complex and large
practical problems when it is not possible to solve them through a
mathematical method.
-Simulation is flexible, hence changes in the system variables can
be made to select the best solution among the various
alternatives.
-In simulation, the experiments are carried out with the model
without disturbing the system.
-Policy decisions can be made much faster by knowing the options
well in advance and by reducing the risk of experimenting in the
real system.
#Disadvantages -
-Simulation does not generate optimal solutions.
-It may take a long time to develop a good simulation model.
-In certain cases simulation models can be very expensive.
-The decision-maker must provide all information about the
constraints and conditions for examination, as simulation does not
give the answers by itself.
●Computers games can be considered visual simulation as
They are worlds in which variables interact through time. What
makes them interestingly different from scientific simulations is
that the player is not outside, but, rather, inside the simulation
(the virtual world) and there are interesting intermediary cases
between scientific simulations and games, such as flight
simulators, as well as games like Full Spectrum Warrior, which in
one form is used as a simulation by the army and in another form is
used as a game for the commercial market.
The player has a surrogate in the simulation (game), namely the
virtual character or characters he or she controls in the virtual
world - Solid Snake in Metal Gear Solid, a Sim family in The Sims,
or citizens, soldiers, and buildings in Rise of Nations.
Describe the general process of simulation. List some of the major advantages of simulation over optimization...
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