Market Share

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aalto-comnet
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Posts: 37
Joined: Fri Dec 07, 2018 9:20 am
Vensim version: DSS

Market Share

Post by aalto-comnet »

Hi!

For the networke model of chapter 10, in this part that is shown in the attachment, how can I add an additional variable, named "Product 3 Share of Installed Base" for example, with a pre-specified share of the installed base for each time step?

Thanks!
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tomfid
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Joined: Wed May 24, 2006 4:54 am

Re: Market Share

Post by tomfid »

If Prod3share is fixed, that implies that there's an installed base for prod 3 that has a fixed relationship to the installed bases for 1 and 2. So, you could modify this so that:

Total Installed Base = (Installed base prod 1 + installed base prod 2)/(1-Prod3share)
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