Computer modeling

From Computer Science Wiki
Modeling & Simulation[1]
A computer model is an abstract mathematic representations of a real-world event, system, behavior, or natural phenomenon. A computer model is designed to behave just like the real-life system. The more accurate the model, the closer it matches real-life.  [2]
A computer model is a translation of objects or phenomena from the real world into mathematical equations.[3]

Why use a model[edit]

Thanks to for the content below. A model might be used:

  • To test a system without having to create the system for real (Building real-life systems can be expensive, and take a long time)
  • To predict what might happen to a system in the future (An accurate model allows us to go forward in virtual time to see what the system will be doing in the future)
  • To train people to use a system without putting them at risk (Learning to fly an airplane is very difficult and mistake will be made. In a real plane mistakes could be fatal!)
  • To investigate a system in great detail (A model of a system can be zoomed in/out or rotated. Time can be stopped, rewound, etc.)

Constructing a model[edit]

Model Construction Principle[4]: Problems must be designed to allow for the creation of a model dealing with:

  • Elements
  • Relationships and operations between these elements
  • Patterns and rules governing these relationships

What is a useful model?[edit]

Two different types of models[edit]

deterministic A model or simulation where no randomness is involved.
stochastic A model or simulation that uses random numbers so that the system states and the output results are not exactly predictable from run to run.

Do I have a model?[edit]

  1. I have identified important features / factors of whatever event(s) I hope to represent.
  2. I identified rules that control those features and their relationships.
  3. I have mathematically expressed those rules
  4. I have adjusted for how likely each factor is.


  • Define the term computer modelling.