In the proposed model, the Cobb-Dauglas production function is introduced to describe the increase of knowledge caused by knowledge diffusion, a kind of collaborative production of knowledge.

• 该模型将由知识扩散所引起的知识增长当作一种知识产品的合作生产，引入柯布-道格拉斯生产函数，并分别考察在个体不进行知识自我增长和进行知识自我增长情况下的知识传播。