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Social Networks

Social Networks. …through computer networks…. Types of Networking. Networking for a job… Networks of people trying to do a task Networks of organizations The third mode Hierarchical Market. Social Networks.

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Social Networks

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  1. Social Networks …through computer networks…

  2. Types of Networking • Networking for a job… • Networks of people trying to do a task • Networks of organizations • The third mode • Hierarchical • Market

  3. Social Networks • “The term was first coined in 1954 by J. A. Barnes (in: Class and Committees in a Norwegian Island Parish, in Human Relations”) • Social Network growth 2004 through 2005 (in thousands):

  4. …the growth is concealed by the big sites…

  5. Types of Social Networks • VRML Worlds • Avatara’s Home @ Pointworlds • Game sites • Yahoo spades • Star Wars Galaxies • Blogs • Livejournal • Career Networking • Linkedin • Friendship Networking • Facebook

  6. Contact networks of daily communications

  7. Flickr network of 2367 people (Flickr is a picture sharing system)

  8. Indices (my selection) • Betweenness • An intermediary. The extent to which a node is directly connected only to those other nodes that are not directly connected to each other • Closeness • Measure of nearness to all other individuals • Degree • Number of ties to other actors • Radiality • Content-focused. Quality of information passed through • Structural equivalence • Common set of linkages to same others. Also, being at the same level in the organization • Structural hole • Lacking connections in the network • Homophily • Degree to which people in a network are similar to each other

  9. Team Work / Newsminutes

  10. Where does it end?

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