摘要
对超越对数生产函数替代弹性的理论公式提出异议,利用微分与导数知识推导出新的理论公式。在此基础上,采用岭回归方法重新对中国超越对数生产函数模型作实证分析,并指出方差膨胀因子在确定岭参数过程中存在的不当用法。实证比较结果表明:产出随时间的自主变化弹性值被高估;劳动的产出弹性值被低估;资本对劳动、资本对能源、劳动对能源的替代弹性值均接近理想状态并呈逐年递减趋势。
This paper raises an objection to the theoretical formula about the substitution elasticity of trans-log production function,and then uses differential and derivative knowledge to derive a new one. On this basis, uses ridge regression method to renew the empirical analysis about China＇ s trans-log production function model, and points out the improper usage about variance inflation factor existing in the process of determining ridge parameter. The empirical comparison results show that： the output elasticity values of time independent change are overestimated; the output elasticity values of labor are underestimated; all the substitution elasticity values of capital to labor,capital to energy and labor to energy are close to the ideal state and show a trend of decreasing year by year.
出处
《石家庄经济学院学报》
2014年第5期14-19,共6页
Journal of Shijiazhuang University of Economics
基金
福建省新世纪优秀人才支持计划(K8012065A)
福建省教育厅社会科学研究项目(JB11098S)
关键词
超越对数生产函数
替代弹性
方差膨胀因子
岭回归
trans-log production function
substitution elasticity
variance inflation factor
ridge regression
