An influence chart is a simple diagram that shows what outcome variables the model will generate and how these outputs are numerical results or insights into which particular solutions are desirable. These charts are very useful during the early stages of modeling and during the communication of modeling with clients. Figure 1 below shows an example of a influence chart.
When creating an influence chart they are built from right to left and use a diagram that determine the role of different variable, which are shown below in Figure 2.
Influence charts also must follow a set of standard rules, which are listed below:
1. Start with the outcome measure.
2. Decompose the outcome measure into independent variables that measure directly.
3. Repeat decomposition of each variable in turn.
4. Identify input and decisions as they arise.
5. Check to make sure a variable only appears once.
6. Highlight special types of elements with consistent symbols.
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