Research On Knowledge Construction And Application In Online Learning System

Although knowledge management can effectively help learners to better understand,manage and transform knowledge.However,most knowledge management modules in intelligent learning systems usually use semantic techniques or tools which are highly dependent on structured knowledge representation.Due to the lack of rich semantic associations and inference functions,these semantic tools make the intelligent learning system's urgently needed functions,such as the expression of the intrinsic correlation of the smallgrained knowledge,the abstraction of the unstructured knowledge,and the evolution of the knowledge map,unable to be effectively implemented.Aiming at this problem,we proposed a basic model of online learning system resource construction.This model is based on the Semantic Linked Network(SLN)technology and it establish a keyword auxiliary corpus with cognitive value,With the help of the semantic rule set constructed by the previous work and the new supplementary rule set of this paper.The conceptual entities with cognitive value and their semantic associations are extracted from the learning resources.On the basis of this model and the characteristics of online learning system,an individual cognitive evaluation model which can simulate learners' individual knowledge structure is constructed.The system resources and learners' personal knowledge structure are visualized through visualization.This article is divided into six chapters to elaborate the research content: The first chapter introduces the research background,domestic and foreign research status,and the research objectives and significance of this paper.The second chapter introduces the relevant theoretical knowledge of this research,including the semantic linked network,constructivism and the general cognitive ability of theory and knowledge integration.The third chapter introduces the online learning system resource building model proposed in this paper,and its extraction and construction of public knowledge in online learning system,mainly including static knowledge and dynamic knowledge.The fourth chapter introduces the application of knowledge construction,which mainly includes the simulation of individual knowledge structure and knowledge visualization.The fifth chapter tests the accuracy of the online learning system resource construction model for knowledge extraction and the individual cognitive assessment model for personal knowledge.The simulation results of the structure.The sixth chapter summarizes the study and proposes the future research plans.