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GTAP Resources: Resource Display

GTAP Resource #2666

"TASTE a program to adapt detailed trade and tariff data to GTAP-related purposes "
by Horridge, Mark and David Laborde

The GTAP project provides a coherent database to support CGE modelling of international trade and applied tariff changes at a 57-sector level of sectoral detail. Real-world tariff negotiations deal with bound rates, which form a ceiling on applied rates and (for a given exporter/ importer country pair) vary greatly within each of the GTAP sectors. Therefore, to compute applied tariff shocks for GTAP or similar models, we need much more detailed data on trade flows and on bound and applied rates.

Such a dataset has been prepared at CEPII. It includes HS6 level trade data for all trading pairs within 200 countries, together with estimates of applied/bound rates for each trade. It is internally consistent (exports=imports) and agrees with the GTAP dataset.
The CEPII dataset is an impressive resource -- but presents barriers to entry. It consists of a huge text file, too large to load into Excel or a text editor. To obtain or process this dataset raises technical problems.

To lower these barriers, we present TASTE -- the Tariff Analytical and Simulation Tool for Economists -- which compresses the CEPII dataset onto a single CD and allows the ordinary GTAP user to rapidly process it. A set of rules about cuts in applied rates (as negotiated in trade talks) is specified by the user. Using an ordinary PC, TASTE takes 3 or 4 minutes to apply these rules to the 180 million CEPII trades. Resulting changes in applied rates are averaged to a user-specified level of sectoral and regional aggregation and may be directly used by the standard GTAP model. TASTE does not rely on any other software.

TASTE also facilitates other uses of the CEPII data. For example, you can extract all data relating to a GTAP sector. This could be used to prepare a version of GTAP which modelled trade in a few GTAP sectors at the HS6 or HS4 level. The extra detail might be important if trade shares or import restrictions varied greatly amongst HS6 groups within a GTAP sector.

Resource Details (Export Citation) GTAP Keywords
Category: 2008 Conference Paper
Status: Published
By/In: Presented at the 11th Annual Conference on Global Economic Analysis, Helsinki, Finland
Date: 2008
Created: Horridge, M. (4/13/2008)
Updated: Batta, G. (4/23/2010)
Visits: 7,596
- Preferential trading arrangements
- The GTAP Data Base and extensions

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