Models and Modeling Tools

Models are listed by family, time dimension, and spatial coverage when applicable. Click a model's title to view the latest developments.

Last Updated: 25 Mar, 2015
Family: multi-market partial equilibrium model
Spatial Extent: neutral
Time:

PETS is a multi-region, multi-sector, dynamically recursive,  and partial equilibrium (PE) model. The model developed in Fontagne, Laborde, and Mitaritonna (2011) focuses on trade policy analysis using disaggregated geographical and sectoral levels of data.  The model emphasizes the demand side, which is specified as a nested CES structure, where the initial regional income is assumed to be fixed. The demand is expressed at various levels of disaggregation matched by increasing substitutability (elasticity of substitution increases with higher level of disaggregation). 

Last Updated: 20 Feb, 2013
Family: multi-market partial equilibrium model
Spatial Extent: global
Time:

This is a partial equilibrium model for trade policy analysis (PE-TRADE) which is set up in Excel. The PE-TRADE model in Excel shows multiple examples of trade policy analyses with increasing details in each worksheet. In these examples, the focus is on the response of import demand to changes in trade policy and other tax policy instruments.

Last Updated: 31 Oct, 2012
Family: multi-market partial equilibrium model
Spatial Extent: global
Time:

Different from many single-commodity partial equilibrium models, the Export Restrictions And import Tariffs Overall impacts (ERATO) model illustrates how a multi-market model can be used to analyze trade policy options in a context of a multi-product value chain. It can also be used to study different productivity shock or tax changes in a sectoral value chain. The ERATO model is a member of the MUlti Sectoral partial Equilibrium models (MUSE) developed for the AGRODEP Consortium.

Last Updated: 1 Nov, 2012
Family: multi-market partial equilibrium model
Spatial Extent: global
Time:

DREAM, or Dynamic Research EvaluAtion for Management, is a menu-driven software package for evaluating the economic impacts of agricultural research and development (R&D). Users can simulate a range of market, technology adoption, research spillover, and trade policy scenarios based on a flexible, multi-market, partial equilibrium model.

Last Updated: 1 Jan, 2000
Family: multi-market partial equilibrium model
Spatial Extent: global
Time:

The IMPACT model is a representation of a competitive world agricultural market. It is specified for 30 crop and livestock commodities, including cereals, soybeans, cotton, roots and tubers, meats, milk, eggs, oils, sugar/sweeteners, fruits/vegetables, and fish. It is specified as a set of 115 countries and regions within each of which supply, demand, and prices for agricultural commodities are determined.

EMM

Last Updated: 1 Jan, 2007
Family: multi-market partial equilibrium model
Spatial Extent: sub-national
Time:

The Economy-Wide Multi-Market (EMM) model is based on neoclassical microeconomic theory. In the model, an aggregate producer represents a specific zone’s production of a specific sector. In this application for Ethiopia, there are a total of 2,352 (42 sub-sectors x 56 zones) such representative producers. Consistent with the setup of many other multi-market models, the supply function, rather than the production function, is used to capture each representative producer’s response to market conditions.