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This paper analyzes the characteristics of knowledge sharing behavior in online learning communities, builds a prisoner's dilemma game model of learners' knowledge sharing behavior based on expectation, and conducts an evolutionary simulation experiment on this model. Through experimental simulation, this paper studies the effect of expectation-based learning motivation on knowledge sharing behavior, and reveals the evolution law of knowledge sharing behavior in the network under the influencedoi:10.18178/ijiet.2019.9.10.1297 fatcat:h64wxg47rbbknatzezco7t4d7u