1Copyright © 2011, Elsevier Inc. All rights Reserved

Chapter 12

WWW Hyperlink Networks

Analyzing Social Media Networks with NodeXLInsights from a Connected World

2

Robert Ackland is a Fellow at the Australian National University. He works on the development of new approaches (and associated software) for empirical social science research into online social and organizational networks, and has recently studied the networking behavior of political bloggers and environmental activists. Robert has degrees in economics from the University of Melbourne, Yale University (where he was a Fulbright Scholar) and the ANU, where he completed his PhD in economics in 2001.

In 2005 he established the Virtual Observatory for the Study of Online Networks (http://voson.anu.edu.au) project and in 2007, he was awarded a UK National Centre for e-Social Science Visiting Fellowship and an Oxford University James Martin Visiting Fellowship (at the Oxford Internet Institute). Robert coordinates the ANU's Master of Social Research programme and teaches courses on the social science of the Internet and online research methods. He is currently writing a related book (to be published by SAGE).

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FIGURE 12.1C

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NodeXL Data Import “VOSON login” dialog.

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FIGURE 12.2C

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NodeXL “Select existing or build new VOSON network” dialog.

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FIGURE 12.3C

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NodeXL “Create VOSON database” dialog.

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FIGURE 12.4C

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NodeXL “Select existing or build new VOSON network” dialog after a new database has been created.

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FIGURE 12.5C

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NodeXL “Add seed sites to VOSON database” dialog.

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FIGURE 12.6C

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NodeXL “Add seed sites to VOSON database” dialog

after entering voson.anu.edu.au as seed site.

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FIGURE 12.7C

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NodeXL visualization of a VOSON map of the http://voson.anu.edu.au web site (ego) connected to 83 other web sites (alters).

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FIGURE 12.8C

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NodeXL visualization of the 1 degree VOSON hyperlink network with vertex color matching generic TLD.

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FIGURE 12.9C

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NodeXL visualization of the VOSON 2 degree hyperlink network created by crawling http://voson.anu.edu.au plus 15 additional seed sites that link to it.

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FIGURE 12.10C

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A filtered NodeXL visualization of the VOSON Project local hyperlink network containing 16 seed sites plus related “important sites.”

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FIGURE 12.11C

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NodeXL visualization of the local hyperlink network for the VOSON Project (filtered). Seed sites are solid squares (except for the VOSON Project web site, which is a solid triangle), whereas other sites are discs. Vertex size is proportional to in-degree and vertex color corresponds to generic TLD (.edu, turquoise; .org, blue; .com, red; and .net, brown).

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FIGURE 12.12C

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NodeXL “Add seed sites to VOSON database”

dialog with 16 seed sites plus related “important sites.”

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FIGURE 12.13C

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A filtered NodeXL visualization of seed sites focused on “social network analysis” plus important sites (sites with degree greater than or equal to two). The favicon (where available) is displayed for the seeds, whereas red discs are used to represent nonseed sites.

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FIGURE 12.14C

hapter 12

A filtered NodeXL visualization of seed sites focused on “social network analysis,” using the favicon (where available) for the graph vertex.