摘要：

Abstract:

【Purpose/significance】 Social platforms are the main channels for the generation and spread of online rumors, and they are

responsible for the management of online rumors. However, the immune escape effect in the process of rumor spread poses new chal⁃

lenges to platform governance, so it is of great theoretical and practical significance to find ways to curb or even eliminate immune es⁃

cape

.

【Method/process】In this paper, based on the perspective of platform governance, an improved IE-SICR rumor propagation model

is proposed considering the immune escape effect in the propagation process, and then a theoretical derivation of the rumor propaga⁃

tion threshold and final diffusion scale in the scale-free network is carried out, and finally a simulation experimental study is con⁃

ducted through matlab2021a software

.

【Result/conclusion】The study shows that rumor control strategies of social platforms can play a

good suppression effect on online rumors, but the occurrence of immune escape effect weakens the platform governance effect. Com⁃

pared with the occurrence of no escape, rumors spread on a larger scale when there is an escape occurrence, the propagation cycle is

longer, and it takes longer for the rumors to eventually die down.【Innovation/limitation】There are two main innovations: A rumor

propagation model with immune escape effect is considered and proposed based on the perspective of platform governance; The abate⁃

ment effect of targeting strategies on the immune escape effect is purposefully proposed and analyzed. The limitation lies in the lack of

real case data, and the research conclusion needs to be further tested.