Spectral Analysis of User Interests for Experimental Verification of the Oscillation Model for OSNs

Recent development of online social networks (OSNs) has accelerated communication between individuals and has led to efficient activities in the real world. However, activities on OSNs does not necessarily have positive impact on the real world. For example, explosive user dynamics such as flaming on OSNs seriously impacts not only on online communities but also on social activities in the real world. Therefore, to prevent the flaming, we need to understand the cause of explosive user dynamics. We have proposed to describe user dynamics in OSNs by the wave equation on networks which called the oscillation model of OSNs [1]. Although this model was motivated from a purely theoretical framework, it gives natural extension of the conventional node centrality measures [2], [3] and enables us to understand the cause of explosive user dynamics [1], [4]. However, its experimental verification is not sufficiently conducted. This paper discuss the validity of the oscillation model by analyzing real data.