Researches on Modeling Learners' Collaboration Network in Virtual Learning Community

With the rapid development of online education, virtual learning community has a great impact on people's learning. Here we focus on the dynamics evolution law of collaborative behavior, characterizing the features of collaborative behaviors among learners in virtual learning community. We construct a learners' collaboration network model in virtual learning community. We analyze important statistics of the network such as the degree distribution, the average path length, the clustering coefficients. On this basis, we describe the network features and study the topology characteristics of the collaborative relationship network deeply. The experiments show that the learners' collaboration network model could depict the characteristics of virtual learning community and the characteristics of the collaborative behavior among learners more accurately. The research could enrich the existing network model construction theory, and provide the network structure foundation for the study of collaborative relationship between learners in virtual learning community.