Mittwoch, 23. November 2011

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."

Samstag, 12. November 2011

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.

Sonntag, 6. November 2011

Nicholas Christakis on Social Networks

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

Dienstag, 1. November 2011

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.