GTAP Models: Archived Model VersionsA complete version history since 1994 is available for download. Additional information about each release may be found below.
A Note On Changes Since GTAP Book Model
by Itakura, K. and T. Hertel, 2000
GTAP Model Version 5.0
Latest update: May 2000
This version was introduced for the 2000 GTAP Short Course. Changes from Version 4.1 to Version 5.0 include:
- Module Structure
- Multiple Margins Sectors
- Correction on "ao" when ESUBT > 0
GTAP Model Version 4.1
Latest update: November 1998
The GTAP.TAB Version 4.1 (November 1998) includes a parameter which captures intermediate input substitution. Users can now specify which endowment factors are sluggish or mobile through the use of a binary switch parameter.
The introduction of these new features in the GTAP.TAB file presents some incompatibility with previous set and parameter files. Software for converting set and parameter files for use with the latest version of the model may also be downloaded.
GTAP Model Version 4.0
Latest update: July 1998
Some features available in GEMPACK 6.0 were introduced in GTAP Model Version 4.0 (July 1998). It allows for region-specific psave(r) to capture regional differences in the price of savings. Other changes introduced include:
- GE 0 restrictions on all data flows;
- volume initialization on flows at market prices;
- market price and price index initialization at 1.0;
- value of world output at user prices;
- real rate of return to factors; and
- regional and global primary factor price indices.
GTAP Book - Model Files
Latest update: August 1995
The model documented in the GTAP book is Version 2.2a of GTAP94.TAB. This file, and the software for replicating applications in that book are available through this web site. This version of the model will be preserved, regardless of future developments.
OneGTAP Model File
Latest update: April 2001