Information Diffusion Based On Complex Network

Generally, the complex network has already been regarded as a brand-new and powerful tool which portrays the nature and social system well and has potential applications in scientific research, such as systems science, sociology, economics, management, engineering technology, and so on. The complex network's complexity stems from its massive nodes and edges, as well as the nonlinear relationship between them, so the nodes and edges have their own complex status and renewal strategy continually. Furthermore, a dynamic network has even more complexity such as scale expansion, topology changing, and structure's influence to function. The research on complex network is helpful in understanding complex science and complicated systems.The first part of this article introduces the classical theory of complex network, and the most representative complex network model, the small-world network and the scale-free network. Then, based on the construction of an opinion interactive model and a topic diffusion model separately, this article studies the universal existence dissemination phenomenon from which the diffusion rule and the primary influential factors of system efficiency and balance are summarized, and the possible way to forecast the event trend, limit or facilitate the spreading of thought, is given.The opinion interactive model analyzes the critical communication difficulty threshold value first, and then studies the influence of architecture to efficiency in the series small-world network. We find that the efficiency that only depends in the short edges is far inferior to that of the distant edges, although the distant edges are diminishing marginal utility also.The topic diffusion model in the scale-free network analyzes how the interest of the topic, the individual's attention level to other people and so on, affect the topic dissemination. As is the case, the more important and more interesting the topic is, the more participators join discussion finally. Caring about others' views will boost the topic discussion with community strategy uniform agreement.