To every economy, the problem set to find is to establish which sectors are most sensitive to changes in the final demand. In this paper we derive the mathematical conditions to obtain the relative importance of an input coefficients. The method is based on the impacts of gross products before...

The varying-coefficient model is an attractive alternative to the additive and other models. One important method in estimating the coefficient functions in this model is the local polynomial fitting approach. In this approach, the choice of bandwidth is crucial. If the unknown curve is spatial...