Growth in patents

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Growth in patents

Postby georam11 » Tue Jan 17, 2017 11:59 am

Dear Prof Pfeifer,

I try to run the model in attached paper by normalising the variables by no of patents. I take the stead state value of growth in patents to be 1. I have re checked the model so many times but cannot find the error. Is the error stemming from the fact that I assume dn in steady state to be 1? How would you suggest rectifying it? I increased maxit but still the problem persists.

Best,
Ammu
Attachments
Donadelli (2016).pdf
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Last edited by georam11 on Wed Apr 12, 2017 9:07 am, edited 1 time in total.
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Re: Growth in patents

Postby jpfeifer » Mon Jan 23, 2017 11:48 am

Use the
Code: Select all
resid

command before
Code: Select all
steady

You will see that equation 10 is the only one with a residual. Either that equation is wrong, or your steady state. Also, as you are providing an analytical steady state, you should be using a
Code: Select all
steady_state_model

block, not an
Code: Select all
initval

block
------------
Johannes Pfeifer
University of Cologne
https://sites.google.com/site/pfeiferecon/
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