Abstract:

Prior studies hold a view that social network is dynamic, so the actor and tie are. However, the studies about hubs focus on static perspective and investigate the effect of hubs at one point in time. So, this paper checks the influence of hubs to new product diffusion from a dynamic perspective, and we find the impact of hubs will increase with the time extension of new product diffusion. Also, the paper divides two types of hubs: innovator hubs and follower hubs, and it lead to a result that, with the time extension of new product diffusion, the influence of innovator hubs increase and the impact of follower hubs decrease.

Key words: New product diffusion, Hubs, Dynamic network, Market size