GTAP Resources: Frequently Asked Questions


Question: How can a package file (.pkg), typically used on macOS, be opened or installed on a Windows system, especially when dealing with specific databases like the GTAP 9 Database from archives? View Answer Answer: The GTAP 9 Database is compatible with Windows operating systems, requiring at least 256 MB of RAM and supporting versions from Windows 98 up to Windows 8, and by extension, more recent versions as well. This ensures broad accessibility for users with different Windows systems. For further information and specifics on the GTAP 9 Database, including installation guidelines and requirements, the official GTAP website provides comprehensive resources and support https://www.gtap.agecon.purdue.edu/databases/v9/default.asp. Categories: GTAP 9 Data Base, GTAPAgg2
Question: I'm encountering an issue with GTAPAgg2. My goal is to aggregate regions into 'South Africa, Ethiopia, Egypt, and Rest of the World'. However, when attempting this specific aggregation, I receive an 'unidentified problem' error. This problem persists even when the aggregation is modified by adding or replacing countries, but only with this specific combination. Could there be a known reason for this, and are there any suggested solutions? View Answer Answer: For these issues, please use the GTAP 11 B (a new revision of the GTAP11) database. It was identified some aggregation conversion issues in GTAP 11 A and were fixed in the new revision (GTAP11B). Categories: GTAP 11 Data Base, GTAPAgg2
Question: GTAP-POWER aggregation using GTAPAgg2. View Answer Answer: You need to follow a specific labeling convention, see the note in the GTAPAgg2 window, e.g., gas and gdt should be aggregated to be consistent with the model notations. More resources at: https://www.gtap.agecon.purdue.edu/uploads/resources/download/8282.pdf https://www.gtap.agecon.purdue.edu/uploads/resources/download/9778.pdf Categories: GTAPAgg2
Question: Where can I get the precise instructions to proceed with the installation/updating of the GTAPAgg2 application? View Answer Answer: You can find the instructions at: https://www.gtap.agecon.purdue.edu/securedFile/Filedownload.aspx?fileid=1081 Categories: GTAPAgg2
Question: Doubts regarding the naming conventions between the classic version of GTAP and GTAPv7 model. View Answer Answer: You can find the GTAPv7 manual and naming conventions from the previous version to v7 (Appendix A) on this link: https://jgea.org/ojs/index.php/jgea/article/view/47/30 Categories: GTAP Model (Standard)
Question: How can one effectively align the TRD (Trade) sector from GTAP11 with the 12 EBOP classification for services, considering it doesn't fit directly into EBOPS services sectors or the Harmonised System codes? Are there any recommended approaches or resources for this specific sector mapping challenge? View Answer Answer: One option could be ISIC data. Please see below the resource with ISIC concordances: https://www.gtap.agecon.purdue.edu/databases/contribute/concordinfo.asp Here is a more descriptive definition of each sector in case you prefer to manually map to some sector of other classification that you may think it will be a good fit: https://www.gtap.agecon.purdue.edu/databases/contribute/detailedsector.asp Categories: GTAP 11 Data Base
Question: Is there a correspondence table between HS (Harmonised System) goods trade and BOP (Balance of Payments) services trade classification and the GTAP sector codes? View Answer Answer: For the service trade please have a look at the reference below. It has the mapping of services trade to gtap-like sectors: https://www.gtap.agecon.purdue.edu/uploads/resources/download/2865.pdf Categories: GTAP Data Base
Question: Where can I find the latest information on the energy data in GTAP? View Answer Answer: The latest energy data chapter for GTAP, which might provide further insights into sectors like 'gas' and 'gdt', was recently posted. You can access this chapter for more detailed information at GTAP Energy Data Chapter Categories: GTAP Data Base
Question: What do the terms 'cpp' (Copper - primary), 'cps' (Copper - secondary), and 'rcp' (Recycling - copper) signify in the GTAP database, and how are they distinguished from one another? Is there a detailed description available that explains what is included in these sectors? View Answer Answer: In the GTAP-CE database, "recycling" refers to the activities of scrap collection and pre-treatment processes like cleaning and pre-processing, whereas "secondary production" involves producing material (such as metal or plastic) from the collected scrap. This distinction clarifies the separate roles each process plays in the material lifecycle. For a more detailed description, you can visit the GTAP website https://www.gtap.agecon.purdue.edu/resources/res_display.asp?RecordID=6607 Categories: GTAP Data Base
Question: Is it fair to say that GTAP results for the GCC are more uncertain than those for India? View Answer Answer: Yes, it is fair to suggest that GTAP results for the GCC might be more uncertain compared to those for India. This is because the IO table used for India is more recent (from 2015-16), covers more sectors (131 sectors), and did not require supplementation with another country’s IO table. In contrast, the GCC data relies on older IO tables (circa 2005) and uses Kuwait's data as a proxy for other GCC members, which could introduce more uncertainty. Categories: GTAP Data Base
Question: Why does the GTAP tariff data show a 5% tariff on exports of gas manufacture and transport (gdt) from the UK to Saudi Arabia and Oman, and is this an error? View Answer Answer: The presence of a 5% tariff in the GTAP data on exports of gas manufacture and transport (gdt) from the UK to Saudi Arabia and Oman is due to how the GTAP’s gdt sector is classified. The gdt sector in GTAP is mapped to the Harmonized System (HS) code “270500”. This mapping has been the standard practice over time, though it may not necessarily reflect the most accurate treatment. In GTAP, particularly within the GTAP-E framework, the sectors for gas and gdt are often aggregated. This classification might lead to the appearance of tariffs on what is perceived as a service sector. Categories: GTAP Data Base
Question: Does the GTAP 'gdt' sector consist entirely of HS 270500 goods, or is it a mix of goods and services? Also, what distinguishes the 'gdt' sector from the 'gas' sector? View Answer Answer: In the GTAP database, the 'gdt' (gas manufacture and transport) sector is a mixed sector. It does not consist solely of the Harmonized System (HS) code “270500” goods but also includes some services data. The 'gdt' sector is in concord with the International Standard Industrial Classification (ISIC) code 352, which encompasses the manufacture and distribution of gas. In contrast, the 'gas' sector in GTAP, defined as the extraction of natural gas, is concorded to ISIC’s codes 062 and part of 091. This distinction highlights that the 'gas' sector is focused more on the extraction process, whereas 'gdt' involves both the manufacturing and distribution aspects of gas. Therefore, the 'gdt' sector encompasses a broader range of activities than just the extraction of natural gas, reflecting its categorization as a mixed sector and explaining the presence of tariffs on what might traditionally be considered a service. Categories: GTAP Data Base
Question: How is the Input-Output (IO) table for Kuwait utilized in assembling the data for the other GCC members in GTAP? View Answer Answer: The IO table for Kuwait is used as a basis to inform the data for other GCC members. This approach involves extrapolating and adjusting Kuwait's data to represent the economic structures of the other GCC countries. For more detailed information on the specific treatment of GCC countries in GTAP, you can refer to the GTAP database documentation, particularly the version 8 documentation where these countries were introduced: GTAP v8 Documentation. Categories: GTAP Data Base
Question: Has there been any significant change in methodology for reconciling disparities in bilateral trade flows in GTAP 11 compared to version 7? View Answer Answer: In GTAP 11, the basic approach for reconcilingdisparities in bilateral trade flows remains the same as in version 7. However, the coverage has expanded beyond China and Hong Kong to include other significant trading countries like the Netherlands, Singapore, and Taiwan. Additionally, COMTRADE now offers a broader coverage on re-exports that are removed, and it is important to note that GTAP reports domestic exports. Categories: GTAP 11 Data Base
Question: How can one find or establish a correlation, concordance, or equivalence table between the VII edition of the Harmonized System (HS) at the 6-digit level and the Global Trade Analysis Project (GTAP) sectors? View Answer Answer: The link (https://www.gtap.agecon.purdue.edu/resources/res_display.asp?RecordID=5111) provides a concordance file for mapping six-digit Harmonized System (HS) codes to the 65 GTAP sectors, specifically revised for use with GTAP 11. For the 6-digit level, please use the third link: GTAP11 HS 2 GSEC3 concordance. Categories: GTAP 11 Data Base

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GTAP Resources: Frequently Asked Questions