A GAMS/MPSGE implementation of the PET model

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2019-09-01
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Weitzel, Matthias
Balistreri, Edward
O'Neill, Brian
Ren, Xiaolin
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Center for Agricultural and Rural Development

The Center for Agricultural and Rural Development (CARD) conducts innovative public policy and economic research on agricultural, environmental, and food issues. CARD uniquely combines academic excellence with engagement and anticipatory thinking to inform and benefit society.

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This paper describes a version of the Population-Economy-Technology (PET) model implemented in the GAMS/MPSGE programming language. The implementation of the model is comparable with the original fortran version of iPETS over a number of test cases. While a number of possible configurations exist for both model types, we demonstrate that there is a configuration that makes both implementations behave very similarly and the remaining difference can be traced to different implementations of dynamic agent behavior. This paper also serves as a methodological blueprint for model translation across different programming languages.

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