Die Welt ist kleiner, als gedacht: 4.7 degrees of separation

Aus einem aktuellen Beitrag der New York Times:
Facebook, Pfadlängen, 6 degrees of separation.

"[The] researchers used a set of algorithms developed at the University of Milan to calculate the average distance between any two people by computing a vast number of sample paths among Facebook users. They found that the average number of links from one arbitrarily selected person to another was 4.74. In the United States, where more than half of people over 13 are on Facebook, it was just 4.37."

 http://www.nytimes.com/2011/11/22/technology/between-you-and-me-4-74-degrees.html?_r=2&hpw

Ranking stability and super-stable nodes in complex networks

Laszlo Barabasi at the Web Science Meets Network Science Workshop, talking about google pagerank and its inherent stability.

Link: http://www.youtube.com/watch?v=qfoE2kWHmI4

Nicholas Christakis on Social Networks

Harvard's Nicholas Christakis talks about social networks, health, happiness and social contagion.

A network of companies rules the world

From NewScientist:

 "As protests against financial power sweep the world this week, science may have confirmed the protesters' worst fears. An analysis of the relationships between 43,000 transnational corporations has identified a relatively small group of companies, mainly banks, with disproportionate power over the global economy." 

Link to the article.

Movie time!

A very nice introductory documentation about complex networks. Is everybody on this planet really connected by just 6 degrees of separation? How is this possible? How similar are the internet, the world-wide-web, social systems or a cell?


Six degrees of separation from Adam Woozeer on Vimeo.

The global network of Facebook friendships

Already a classic: Paul Butler's visualization of more than 10 million pairs of friends in Facebook.

http://www.visualcomplexity.com/vc/project_details.cfm?id=749&index=749&domain=

It's all connected: A network perspective on the financial crisis

See this visualization in the New York Times about the structure of international debt and the EURO crisis.

Very nice interactive version:
http://www.nytimes.com/interactive/2011/10/23/sunday-review/an-overview-of-the-euro-crisis.html

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