S-F Model:An Heterogeneous Multi-agent Information Diffusion Model Considering The "Sage" And "Fool"

Recently,with the rapid development of information technology,the ability of individuals to disseminate and access to information has been greatly enhanced.Along with it,the impact and frequency of information diffusions has been increasing.Therefore,it has great significance and value that make analysis and researches on information diffusions and try to control the process of an information diffusion.The existing models of information diffusions can be categorized in two groups:epidemic-like model and threshold model.In general,epidemic-like models are built on the basis of SIR epidemic model.In addition,in an epidemic-like model,the diffusion actors are always divided into several types,and then active probabilities between these divisions are designed.Threshold model,also called decision-based model,is a model in which an agent will make decisions according to comparisons or trade-offs related to the decisions of its neighbors.In these years,there are many models of these two types presented for various situations.However,there are following two defects in these existing studies.Firstly,few researchers take into account the diversity of diffusion actors,especially the diversity of behavior patterns,in information diffusions.Secondly,researchers always consider diffusions of false rumors,but few researchers consider diffusions of rumors,which we do not know true or false while spreading.Given the above issues,we consider both the diversity of behavior patterns and attributes of diffusion actors,and propose an agent model that can fully embody the diversity of the two kinds of diversity of actors for the diffusion of such information with an unknown reliability.In the aspect of the diversity of behavior patterns,inspired by an old saying "Rumors stop at the wise man";the diffusion actors are divided into two groups in this paper:"sage"and "fool".Among them,the "sage" will spread information if and only if he is interested in this information and believe it is true;the "fool" will spread information as long as he is interested in this information,ignoring the reliability of the information.The information spread here does not have a definite reliability.On the other hand,in terms of the diversity of attributes of actors,we consider the impacts of individual's reputation on the reliability of the information:an individual with good reputations is more likely to make others to believe the information spread by him;while an individual with bad reputation always make others disbelieving the information he spread.Next,we present a heterogeneous multi-agent information diffusion model,S-F model,based on the agent model,which can simulate heterogeneous actors("sage" and "fool").Then,based on the implementation of the S-F model,six experiments are designed with the variable controlled method,to explore the information diffusion.