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By using mapping knowledge domain, this paper analyzes the literature from 2005 to 2013 of user behavior in network community, the results show that with the development of the Internet and the maturity of the social media, the research in this field is increasing. Now, the papers mainly focus on the study of the user behavior, virtual community and online community, and the chief methods are structural equation model and social network analysis, also, they have a deep analyze on trust as an influence factor. First, to have an overall understanding of the research situation, this paper analyzes three aspects as follow: the information of the papers, the author of the papers and the research institutions, second, it focuses on the research frontier and the cited references.

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The paper analyzes the changes of factors that influence competitiveness of cloud outsourcing facilitators under the promotion of cloud computing technology from perspective of vendor, and gives a fuzzy comprehensive model of competitiveness of vendor.

As an emerging industry of strategic importance, the development of information service industry has been compelling. By analyzing the development process of the information services industry in the past decade, we can learn that the information service is in warm now. Through establishing an ARMIA model, this study draw conclusion that the industry development index will rise steadily and slowly in 2014. The findings can help government, investors, consumer get a close understanding of the Information Service Industry and take it as a basis for decision making.