Study On The Model Of Konwledge Dissemination In Vitual Community Based On Complex Network

With the rapid development of network, computer and communication technique, the internet has obtained a widespread application. Internet user’s demand is not only to pursue personal experience, but also to pay more attention to the knowledge sharing and communication. Since then, the new community, a virtual community appears in the internet., which is becoming popular and has been paid a great attention by users because of its specialties of going across space and time, interactivity, openness, autonomy,etc.The author takes the complex internet as the angle of view to discuss the forming process of the knowledge propagation network in the virtual community. Firstly, the author makes a research of its effective factors and proposes the mode, that is the interpersonal communication mode and the Man-machine communication model. Based on this, the author simulates the knowledge propagation in the virtual community in different conditions by means of uses the Simulation Platform. After analyzing the research result, the author:(1)Identifying that the node with the most spreading times is the key communicator of the knowledge propagation in the virtual community(2)Verifying that the key node of the key communicator of the knowledge propagation in the virtual community has "the Matthew effect" to some extend.(3)Finding the four conditions which can influent the spread speed of the knowledge propagation in the virtual community, that is the number of the nodes, the absorption coefficient of knowledge receiver, the self growth factor of the knowledge disseminator and the different knowledge level. To some extend, increasing three conditions can speed up the knowledge propagation in the virtual community and quicken to form the Knowledge propagation network of the virtual community.The theoretical significance of this research is not only to provide a new angle of view for the research on exploring the microcosmic mechanism of the knowledge sharing in the virtual community, but also to deepen and expand the research of the theory of knowledge sharing, the theory of the management of the virtual community and the theory of the knowledge propagation; and the practical significance is to provide the basis for how to increase the knowledge sharing efficiency of the virtual community by means of exploring the condition how the speed of the knowledge propagation in the virtual community was affected.