一、技术进步贡献率的测算模型(一)C-D生产函数C-D生产函数的基本形式为:Y=AKαLβμ对式子两端取对数后,便可以得到对数线性形式的生产函数:lnY=lnA+αlnK+βlnL+lnμ用回归法,回归法采用有约束(即α+β=1)或无约束的生产函数模型,使用最小二乘法回归估计式,代入相应数值后,根据计量方法(即利用最小二乘法进行回归)估算出两个弹性系数α和β,及参数A。 First, the technical progress of the contribution rate of the estimated model (A) CD production function The CD production function of the basic form: Y = AKαLβμ After taking the logarithm of both ends of the formula, we can get the logarithmic linear form of the production function: lnY = lnA + αlnK + βlnL + lnμ regression method, the regression method using constrained (ie α + β = 1) or unconstrained production function model, using the least squares regression estimation formula, into the corresponding value, according to the measurement method Least-squares regression) estimates two elastic coefficients α and β, and parameter A.