A New Approach to SAM Updating with an Application to Egypt

M Thissen and H Löfgren
Additional contact information
M Thissen: University of Groningen, WSN-room 567, PO Box 800, 9700 AV Groningen, The Netherlands
H Löfgren: International Food Policy Research Institute, 2033 K Street NW, Washington DC, 20006, USA
Authors registered in the RePEc Author Service: Hans Lofgren

Environment and Planning A, 1998, vol. 30, issue 11, 1991-2003

Abstract: When social accounting matrices (SAMs) are updated with fragmentary data the new column and row totals are often not all known in advance. Also, the overall total of all matrix entries may not be known. This results in a situation in which the generally used RAS method cannot be applied to update the SAM, as the outcomes become unreliable with unknown totals. In this paper a generalised version of the RAS method is developed, based on information theory. This method, which incorporates the RAS method as a special case, is more flexible with respect to necessary information and improves the accuracy of the updated SAMs. In addition to developing a generalised RAS method, we present an easily applied procedure for building SAMs which reduces the time needed to update them. The generalised RAS method and the SAM building procedure are applied to a 1991–92 SAM for Egypt.

Date: 1998
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (5)

Downloads: (external link)
https://journals.sagepub.com/doi/10.1068/a301991 (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:sae:envira:v:30:y:1998:i:11:p:1991-2003

DOI: 10.1068/a301991

Access Statistics for this article

More articles in Environment and Planning A
Bibliographic data for series maintained by SAGE Publications ().