Extraction and Utilization of Human Social Network toward the Semantic Web

Anyone can say anything about anything on the Web. In the context of Semantic Web, it is important to caluculate the trust of information based on “Web of Trust.” We have developed an automatic extraction system of a social network among researchers from the Web. In this paper, we describe that the extracted relation is useful for human relation description in the context of Semantic Web. Moreover, we can extract the central persons in a community by analizing the network centality. Centrality measures are used as a surrogate of trust degree. Our approach shows an overall architecture to calculate the trust of information based on a social network.