Assessment of personal importance based on social networks

People that interact, cooperate or share common activities within information systems can be treated as a social network. The analysis of individual social standings appears to be a crucial element for the assessment of personal importance of each member within such weighted social network. The new measure of person significance - social position that depends on both the strength of relationships an individual maintains and social positions of all their acquaintances, together with its basic features and comparative experiments are presented in this paper.