A standard computable general equilibrium (CGE) model in GAMS

Microcomputers in Policy Research 5
A Standard Computable General Equilibrium (CGE) Model in GAMS
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by Hans Löfgren, Rebecca Lee Harris, and Sherman Robinson with assistance from Marcelle Thomas and Moataz El-Said
2002
ABOUT THIS MANUAL
The purpose of this manual is to contribute to and facilitate the use of computable general equilibrium (CGE) models in the analysis of issues related to food policy in developing countries. The volume includes a detailed presentation of a static "standard" CGE model and its required database and incorporates features of particular importance in developing countries. The manual discusses the implementation of the model in GAMS and is accompanied by a CD-ROM that includes the GAMS software (free demo system), the GAMS input files for the model, sample databases, simulations, solution reports, and a social accounting matrix (SAM) aggregation program. Although the volume provides a standardized framework for analysis, the analyst is not forced to make "one-size-fits-all" assumptions. The GAMS code is written to give the analyst considerable flexibility in model specification.

ABOUT THE AUTHORS
Hans Lofgren is a senior research fellow in the Trade and Macroeconomics Division of IFPRI, where he leads IFPRI's multicountry program, "Macroeconomic Policies, Growth, and Poverty Reduction." Hans' research focuses on the analysis of macro- and micro-effects of food, agriculture, and trade policy, as well as on the development of methods for economywide policy modeling.

Rebecca Lee Harris is the research director at the Globalization Research Center at the University of South Florida in Tampa, Florida. She worked as a research analyst and postdoctoral fellow in the Trade and Macroeconomics Division of IFPRI from 1997 to 2002. Rebecca's research focuses on linkages between macroeconomic policies and shocks and income distribution, concentrating on Latin America and the Caribbean.

Sherman Robinson is director of the Trade and Macroeconomics Division of IFPRI. He is an international authority in the area of policy-oriented general equilibrium modeling. At IFPRI, he has applied these and other tools to policy issues related to agricultural development, income distribution, poverty, intersectoral linkages, macroeconomic policy, and international trade.

Marcelle Thomas is a research analyst in the Trade and Macroeconomics Division of IFPRI, where she works on a variety of macroeconomic and trade issues. In recent years she has worked on building and maintaining social accounting matrices and computable general equilibrium models for use in macroeconomic analysis for the Philippines and Zimbabwe. She is currently working on WTO issues and their impact on the food security of developing countries.

Moataz El-Said is a research analyst in the Trade and Macroeconomics Division of IFPRI. He is currently working on his Ph.D. dissertation in economics from the George Washington University, and at IFPRI works on numerous research projects related to agricultural development, income distribution, poverty, and international trade.


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