Computer Science Ch. 12
Terms
undefined, object
copy deck
-
Ease of modification
-
If we are not happy with our original design, we would need to construct a brand new physical model.
-
Ethical behavior
-
Some physical models have serious moral and ethical consequences.
- Existence
-
The system may not exist; therefore, it is not possible to experiment directly on the actual system.
-
Physical realization
-
The system is not constructed from entities that can be represented by physical objects.
- Safety
- It may be dangerous to experiment on the actual system or a physical replica.
-
Speed of construction
- It may take too much time to construct a physical model.
-
Time scale
-
Some physical systems change too slowly or too quickly.
-
computational steering
-
initialize the system, observe its response, and if not satisfied, modify the parameters and run the model again
-
continuous model
- write out a set of explicit mathematical equations that describe the behavior of a system as a continuous function of time t
-
data extraction
-
determining which data values are important and should be part of the visual display and which ones can be omitted.
-
data manipulation
-
looking for ways to convert the data to other forms or to different units that will make the display easier to understand and interpret
-
discrete event simulation
-
model the behavior of a system only at an explicitly and finite set of times
- event
- any activity that changes the state of the system
-
garbage in-garbage out
-
the results you get our of a simulation model are only as good as the data and the assumptions put into the model
-
simulation models
-
a physical system is modeled as a set of mathematical equations and/or algorithmic procedures that capture the fundamental characteristics and behavior of a system
- statistical distribution
-
if we know a pattern, then the ocmputer can generate a sequence of random numbers that follow the pattern
-
stochastic components
- parts of the system that display random behavior
-
A model is . . .
-
an abstraction of the system being studied, which we claim behaves much like the original.
-
balance between accuracy and complexity
- the model must be an accurate representation of the physical system, but at the same time, it must be simple enough to implement as a program and solve on a computer in a reasonable amount of time
-
The field of computer graphics is concerned with . . .
-
the technical issues involved in information display.
- The field of scientific visualization is concerned with . . .
-
the issue of how to visualize data in a way that highlights its important characteristics and simplifies its interpretation.