Hyperlink Formation in Social Bookmarking Systems: Who is Who Online?

Social bookmarking systems attract researchers in information systems and social sciences because they offer an enormous quantity of user-generated annotations that reveal the interests of millions of people. In this paper, we explore a different viewpoint to gain an understanding of the social bookmarking systems.

Using data crawled from a large social tagging system we argue that the prominence of a website, as measured by its status or public recognition, also determines its centrality.

To test this hypothesis we predict the indexes of authority and other measures of centrality via Social Network Analysis. We also use Gephi to visualize the networks, and analyze the structure.

The results discussed in the paper come from a sample of 61,043 taggings that involved 3,668 users and 4,913 bookmarked websites from a specific Social Network Sites, Delicious, on the subject of globalization of agriculture.

We find that mass media companies have a competitive advantage in attracting links and user attention.

Hyperlink Formation in Social Bookmarking Systems: Who is Who Online? from Juan D Borrero

Production of New Knowledge Through Automated Big Data Extraction from Social Bookmarking Systems

Social tagging systems have gained increasing popularity as a method of annotating and categorising a wide range of different web resources. We use big data from Web 2.0 in social research to discover some type of structuration around the issue of the globalisation of agriculture and, particularly, within Delicious. We retrieved a sample of 3,668 users, 2,148 URLs and 4,776 tags, and through social network analysis (SNA), we found out what types of URLs around our topic have been recommended via collaborative tagging, what types of actors label URLs around this topic, whether there is some type of structuration and hierarchy to be discovered in the network of the globalisation of agriculture (centrality, substructures, etc.), and what types of tags actors are using to specifically label (and thus define and qualify) the URLs on the globalisation of agriculture that they recommend through Delicious.