Contributions to Change in the Input‐Output Model: The Search for Inverse Important Coefficients
用微积分框架解释了投入产出结构系数变化与列昂惕夫逆系数变化的关系，有助于理解部门间结构变化的传导，并提出了无需完整数据即可准确更新投入产出表的方法。
The relationship between changes in input‐output structural coefficients and changes in the coefficients of the Leontief inverse is explained in a calculus‐based framework. Knowledge of this relationship is essential for understanding how structural changes in one sector are transmitted across the economy, and is useful in forming updates to I‐O tables given limited information. Empirically, we identify those coefficients likely to be the most important in causing inverse changes. We find that a selective and systematic updating procedure can lead to accurate updates without the need for complete data.