A Structural Approach to Contact Recommendations in Online Social Networks Scott A. Golder Sarita Yardi Cornell University Georgia Institute of Ithaca, NY 14850 Technology
[email protected] Atlanta, GA 30332
[email protected] Alice Marwick danah boyd New York University Microsoft Research New New York, NY 10003 England
[email protected] Cambridge, MA 02142
[email protected] ABSTRACT as potential new ties is heavily dependent on our existing People generally form network ties with those similar to set of ties – e.g. friends of friends – and on the organiza- them. However, it is not always easy for users of social tions of which we are part, such as schools, workplaces and media sites to find people to connect with, decreasing the community groups [8]. utility of the network for its users. This position paper looks at different ways we can make friend recommenda- At the same time, since homophily lessens exposure to peo- tions, or suggest users to follow on the microblogging site ple who are different in terms of their attitudes, experiences Twitter. We examine a number of ways in which similarity and information, people often actively seek new sources of can be defined, and the implications of these differences for information, and so they must venture outside of their local community-building. People may want different things for networks and create social ties that bridge relatively length- friend suggestions, which has implications for both future ier social distances to individuals who are different from research and product design. them, and thus have access to different information [4][10].