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For these reasons, the objective of the GTAP Data Base is not to provide I-O tables, but to facilitate the operation of economic simulation models ensuring users a consistent set of economic facts. Some users interested in particular Social Accounting Matrices (SAMs) use utilities written by researchers in the network to extract them. Users building I-O tables based on this information do that under their own risk, and are assumed to understand the limitations imposed by the process of data base construction.
Other Useful Utilities Shademap - Shademap is a tool for shading or coloring regions of simple maps according to each region's "score". This program was developed by Mark Horridge. DAGG - DAGG is a command-line program for aggregating, disaggregating and RASsing data on header array files (with lengthy instruction document and FORTRAN source). This program was developed by Mark Horridge.
GTAP Africa Data Bases GTAP Summary in Excel Programs - The 'GTAP Summary in Excel Programs' are a suite of programs designed to improve access to the GTAP Data Base for non-GEMPACK users. It has been developed by the Productivity Commission, building on previous work by GTAP and enables the generation of Excel workbooks containing a summary of each country's economic statistics in individual worksheets. Registered members of the GTAP website may access the GTAP 7 Data Base Summary Matrices as well as the GTAP 6 Data Base Summary Matrices. GView - This free utility may be used to look at aggregations of the GTAP 6 Data Base.
基于这些信息用户根据自身的风险构建IO表,并假定理解数据库构建过程所带来的局限性。 GTAP Data Base不是经济数据的时间序列存储库。除了贸易数据之外,GTAP Data Base是关于消费、生产和贸易的一致数据的截面。一些用户认为将不同版本的数据绑定在一起会给他们带来时间序列的变化。我们强烈建议用户熟悉GTAP Data Base的构建过程,考虑到对于许多来说,基础的IO表从版本到版本的变化,大部分的变化来自于基于宏观经济或贸易变化的调整过程。
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