S型曲线(S-Curve)多存在于分类评定模型、逻辑回归模型,属于多重变数分析范畴,是社会学、生物统计学、临床、数量心理学、市场营销等统计实证分析的常用方法。近日,北京大学国家发展研究院名誉院长林毅夫向国务院总理李克强介绍了“新经济指数”这一最新研究成果,指数显示,我国在传统经济复苏之前,新经济最近表现非常活跃。李克强提到管理学、经济学中的“S型曲线”理论:当旧动能 S-Curve exists in classification evaluation model and logistic regression model. It belongs to the category of multivariate analysis. It is a common method of statistical empirical analysis in sociology, biostatistics, clinical, quantitative psychology and marketing. Recently, Lin Yifu, honorary president of the National Development Institute of Peking University, introduced Premier Li Keqiang to the latest research results of the “New Economic Index.” The index shows that the new economy has been very active recently before the traditional economic recovery. Li Keqiang mentioned in management, economics “S curve ” theory: when the old kinetic energy