社会核算矩阵平衡与更新的Cross-Entropy方法研究

Research on Cross-Entropy Method of the Balancing and Updating of the Social Accounting Matrices

社会核算矩阵(SAM)所包含的数据来自多种数据源,因此,对SAM的平衡与更新的研究具有重要意义。本文阐述了一种SAM平衡与更新方法Cross-Entropy法,并且,以一个简单SAM为例,应用Cross-Entropy法对该SAM的平衡与更新全过程进行详细介绍。与此同时,本文提供了用于平衡与更新该SAM的GAMS计算程序。

It is very important to balance and update existing Social Accounting Matrices(SAMs)for their data generally come from quite diverse sources.A flexible and powerful method to balance and update SAMs named Cross-Entropy method has been introduced in this paper,followed by its application to a simple SAM.The paper then presents a practical way to implement this method using a GAMS code.