Perbandingan Tingkat Keakuratan Beberapa Metode Pengestimasi Perubahan Koefisien input-Output

The fundamental purpose of the input-output model is to analyze the interdependence of industries in an economy. To apply input-output model as a tool of analysis needs a set of economic information or also called "input-output table". To produce an input-output table, based on a survey of establish­ ment in the economy, is an expensive and time-consuming task, not only at national level, but also for regions or states, countries, metropolitan areas, etc. Based on existing studies which have been done by Stone (1963), Bacharach (1972), Harrigan (1982), Kaneko (1984), an inputoutput table is possible to be produced in the economy for a particular year by using non-survey methods. In this article, the author examines three non-survey methods for producing an input-output table, namely RAS method, RECRAS method, and Langrangian method. In addition, this study finds out that RECRAS methods, is the best of the three non-survey methods by using Indonesian input-output tables for 1971, 1975, 1980, and 1985. To emphasize the best method in producing an input-output table, I also use Theil's U coefficient and Mean Squares Error to evaluate them.