GLOBAL ANALYSIS OF SIRI KNOWLEDGE DISSEMINATION MODEL WITH RECALLING RATE

摘要

In order to study the dissemination mechanism of knowledge, a SIRI dynamics model with the learning rate, the forgetting rate and the recall- ing rate is constructed in this paper. Stability of equilibria and global dynamics of the SIRI model are analyzed. Two thresholds that determine whether knowl- edge is disseminated are given. We describe the stability of the equilibria for the SIRI model in which there are an equilibrium and a line of equilibria. In particular, we find the dividing curve function which is used to partition in- variant set in order to discuss the local stability, and obtain the equation of the wave peak value or wave trough value in the process of knowledge dissemi- nation. Numerical simulations are provided to support the theoretical results. The complicated dynamics properties exhibit that the model is very sensitive to variation of parameters, which play an important role on controlling and administering the knowledge dissemination.