GTAP Models: Current GTAP ModelStandard Model
The standard GTAP Model is a multiregion, multisector, computable general equilibrium model, with perfect competition and constant returns to scale. Innovative aspects of this model include:
- The treatment of private household preferences using the non-homothetic CDE functional form.
- The explicit treatment of international trade and transport margins. Bilateral trade is handled via the Armington assumption.
- A global banking sector which intermediates between global savings and consumption.
The GTAP Model was initially documented in the GTAP Book. Recent changes in the structure can be found below:
- Global Trade Analysis: Modeling and Applications, by T.W. Hertel (ed.)
- A Graphical Exposition of the GTAP Model by Brockmeier, Martina
- A Note On Changes Since GTAP Book Model by Itakura, K. and T. Hertel, 2000
- A New Regional Household Demand System for GTAP by McDougall, R., GTAP Working Paper No. 14, 2000
- A General Welfare Decomposition for CGE Models by Hanslow, K., GTAP Technical Paper No. 19, 2000
- Decomposing Welfare Changes in GTAP by Huff, K. and T. Hertel, GTAP Technical Paper No. 05, 2001
- Two Small Extensions to SALTER by McDougall, R., SALTER Working Paper Number 12, 1993
- A Note on the CES Functional Form and Its Use in the GTAP Model by Gohin, A. and T. Hertel
- Notes on Final Demand in the Presence of Non-homothetic, Weak Separability by Hertel, T.
- References for GTAP Data Base and Model
The model code is also available for download:
- Current version: GTAP.TAB Version 6.2. This latest version was released in May 2007.
- Version history: The first model version was GTAP.TAB 2.2a (GTAP 94). It is documented in the GTAP Book. Since 1994, 5 major versions have been released. A complete version history since 1994 may be downloaded.
Mary Burfisher, has published a hands-on book, Introduction to CGE Models, that new GTAP users might also find useful.
Various sets and variables in the GTAP model
Applications and Extensions to the GTAP Model
The standard GTAP Model is amenable to modifications. Many of these modifications are documented in the GTAP Technical and Working Paper Series as well as in GTAP Applications. Key areas of current research at the Center include the development of models and data bases to examine issues related to environmental and energy issues, poverty and migration.