Evaluation of Node Position Based on Mutual Interaction in Social Network of Internet Users.pdfVIP

Evaluation of Node Position Based on Mutual Interaction in Social Network of Internet Users Przemysław Kazienko , Katarzyna Musiał , Aleksander Zgrzywa Abstract: A very interesting scientific problem is the assessment of the node position within the directed, weighted graph that represents the social network of Internet users. The weights of graph arcs are extracted from the data about user mutual communication or common activities. The new method of node position analysis, which takes into account both the strength of the connections between network nodes and dynamic of this strength is presented in the paper. The results of experiments on email dataset were described as well. Keywords: node position assessment, social network of Internet users, social network analysis 1. Introduction The various kinds of e-commerce and e-business solutions that exist in the market encouraged the users to utilize the Internet and available web-based services more willingly in their everyday life. Many customers look for services and goods that have high quality. Thus, not only the information provided by vendors is impor- tant for potential customers but also the opinions of other users who have already bought the goods or used the particular service. It is natural that users, to gather other people opinions, communicate with each other via different communication channels, e.g. by exchanging emails, commenting on forums, using instant mes- sengers, etc. This information flow from one individual to another is the basis for the social network of Internet users (SNIU). This network can be represented as a directed graph, in which nodes are the users and the edges desc