Abstract
It is said that Japanese industrial technology was changing after oil crises in 1970s. In this paper, industrial production functions which include many technology are assumed and it is proposed how to estimate the technological coefficients by using PMF (Positive Matrix Factorization). Secondly, it is cleared that PMF can properly estimate the technological coefficients from Japanese I0 data from 1970 to 1990, and that the change of industrial technology in Japan is analyzed. Finally, the estimated production functions are built in a standard CGE model and the following points are cleared; 1) impact of the oil crises to Japanese economy and 2) the effects of the oil-less technology.
