Researches On Updating The Coefficients Of Input-Output And The Application Of Its Multi-objective Optimization Model

In the past more than 60 years, Input-Output analysis, infiltrating into the vast field of economic analysis, has become an irreplaceable economic analysis method. However there are many problems existing in Input-Output analysis, these problems counteract Input-Output analysis to apply in economic reality. Combining actuality of researches on Input-Output analysis and its developmental current, this paper does some researches on theories and applications about Input-Output analysis.Direct consume coefficients and investment coefficients by which the precision of Input-Output analysis is decided exert positive effects in analyzing and applying the Input-Output model. So it has become the key problem of the Input-Output analysis that how to update the direct consume coefficients effectively and how to calculate the investment coefficients accurately. In this paper, many important methods to update the direct consume coefficients are compared and analyzed, then an example is given to compare the traditional RAS method and a new method which is the reformative form of the traditional RAS method. The conclusion can guide people to update the direct consume coefficient effectively.The calculation of the investment coefficients is a key and difficult problem in the process of applying the dynamic Input-Output model. This paper analyses the relationship among the direct consume coefficient, the investment coefficient and the productive investment. Moreover a simple method to calculate and update the invest coefficient is presented and applied.In order to satisfy the need of making "The Eleventh Five-Year Plan" of a region, a multi-objective and dynamic Input-Output optimization model is set up by combing input-output analysis and linear programming according to the social and economic situation of the region. With the method of goal programming to resolve it, this paper forecasts and analyses the economic development of the region in 2003-2010 and gives the optimal development scheme.