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References.............................................................20

By Asger Olsen

Abstract

The aggregation level of industries in the Danish macroeconomic model ADAM is examined using a new indicator of aggregation bias. The indicator is decomposed into contributions from the original industries, thereby clearly identifying the aggregation problems which caused the 6 industry groups of the older versions of ADAM to be disaggregated into the current 19 groups. An aggregation key minimizing the new bias indicator is found: From the microlevel of 64 industries, 18 "optimal " industry groups are formed through "clustering"; these groups are very similar to the current ADAM groups. Altogether, the conclusions based on the new indicator closely resemble those reached through years of practical experience

Topics: Key words, Aggregation, input-output, macroeconomic model, clustering 1 Macroeconomic Model Unit, Statistics Denmark, Sejrøgade 11
Year: 1999
OAI identifier: oai:CiteSeerX.psu:10.1.1.194.9605
Provided by: CiteSeerX
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