Online Social Networks: Measurement, Analysis, and Applications to Distributed Information Systems

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Online Social Networks: Measurement, Analysis, and Applications to Distributed Information Systems ( online-social-networks-measurement-analysis-and-applications )

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198 established social relationship. Such social links enable users to manually browse for information that is likely of interest to them, and could be used by search tools to index and locate information. In this chapter, we seek to understand whether the shared interest that these social links represent can be exploited by systems. To answer this question, we design, build, and deploy PeerSpective, a prototype system that leverages the shared interest between users in a social network to produce more relevant Web search results. Overall, we make three contributions. First, we compare the mechanisms for content publication and location in the Web and online social networks. We argue that search techniques could benefit from integrating the different mechanisms used to find relevant content in the Web and social networks. Second, we present the design of PeerSpective, a Web search system that leverages the shared interest from a social network to improve Web search. Third, we present results from a deployment of PeerSpective that support our contention that shared interest in social networks can be leveraged in systems. 9.1 The Web versus social networks We begin with a comparison of the Web and social networking systems, with respect to their mechanisms for publishing and locating content.1 Publishing refers to the mechanism by which content creators make information available to other users; it 1We ignore the mechanisms for distributing content between users as they are similar in both the Web and many current online social networks. In both systems, the content is transferred using

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