RAS‐ING THE TRANSACTIONS OR THE COEFFICIENTS: IT MAKES NO DIFFERENCE*
严格证明在投入产出表更新中，用RAS技术估计中间交易矩阵与估计投入系数矩阵或产出系数矩阵结果相同，而其他常用替代方法不成立。
ABSTRACT The biproportional RAS technique has become one of the most important tools to update, regionalize, or balance input–output tables. In this note, we rigorously prove that the estimation of the intermediate transactions matrix yields the same results as the estimation of the input coefficients matrix or the output coefficients matrix. We also show that this does not hold for any of the other updating procedures that have been commonly proposed as an alternative to RAS.