NikhilBugalia
Hi Tim, 

You explained about segmenting solutions in great detail. Thanks for the great review of step by step guides on how to work on complex segments. 

However, often when I use system dynamics in Economic analysis, there are a few variables of particular segment structure which affects other stocks or flows of other segments. 


Is there any special way to treat this?

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KimWarren
Take a case with a Large-customers segment and a Small-customers segment - but some Large customers become small each period and some Small customer become large.

If the two segments are in the same model, you simply have a flow from the Large Stock to the Small and a flow from the Small stock to the large. If using sub-models, though ...
  • the Large-customers sub-model will include an outflow of Large-customers lost to Small
  • in the Parent model create a copy of this item [can simply be a Variable] which calls its values from the Large-customer sub-model
  • the Small-customers sub-model will include an inflow of Small-customers added from Large, which calls its values from the item you added in the Parent model
The same principle applies for any item found in one segment sub-model that you want to use in another segment
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