Principles used in Modeling

Guidelines used in modeling

-          It is not possible provide rule by which models are built. But a number of guidelines can be stated.

-          The different viewpoints from which we can judge whether certain info. Should be included as excluded in models are:

1.    Block –Building: The description of system should be organized as a sequence of blocks. It simplifies the interaction between block within system. Then it will be easy to describe the whole system in terms of interaction between the block and can be represented graphically as simple block diagram.  For example:-the block of factory system.

Fig: Block diagram of factory system

2.     Relevance: The model should only include relevant information. For example, if the factory system study aims to compare the efficient of different operating rules efficiency it is not relevant to consider the mining of employee as an activity.

Irrelevant information should not include despite of being no harm because it increases the complexity of model and takes more time and effort to solve model.

3.    Accuracy: The gathered information should be accurate as well. For example in aircraft system the accuracy as movement of the aircraft depends upon the representations of air frame such as a rigid body.

4.  Aggregation: It should be considered that to which numbers of individual entities can be grouped into a block. For example in factory system, different department are grouped together handled by production manger.