IO & SAM solves input-output and social accounting models for projected activity levels and prices. IO and SAM tables can have up to 1024 columns. With that many columns, IO&SAM can be used to solve multi-regional models. A detailed manual with explanations of software functions and mathematical procedures is supplied together with numerous sample data files.
IO&SAM also transforms data and uses the input tables to provide more than projection results. The user can
- create symmetric, commodity by commodity or industry by industry tables using commodity by industry Make and Use tables;
- create symmetric tables assuming commodity technology, industry technology, or mixed technology;
- update tables by the RAS method;
- transform tables according to alternative assumptions about leakages from final demand, treating them as competitive or non-competitive;
- decompose multiplier matrices by the methods of Pyatt & Round and Stone;
- balance input-output tables to create primitive SAMs;
- estimate real value added by double deflation; and
- compute various measures of productivity change and price change
Besides traditional factor productivity and multi-factor productivity, IO&SAM computes input-output based measures of sectoral and inter-industry multi-factor productivity change.
All IO&SAM functions are implemented by selecting choices presented in dialog boxes. There is no need to write and compile computer programs. A picture of the main screen is attached. A student version is also available.
Sample files for illustration of the capabilities of IO&SAM are included in the software package. 1024-column spreadsheet software is also included so that the user can merge and view spreadsheets created with alternative spreadsheet software. Read the manual for an in-depth description of the IO & SAM application.
DIA can supply IO tables and some SAMs for many countries from Argentina to Zambia.