Lecture 14 Social Networks

Lecture 14 Social Networks - Networks November 3 2008 What...

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November 3, 2008 Networks
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What are networks? Representation of relational systems Allows the application of graph theoretic and other methods to the analysis of network dynamics Fundamental components: Node – elemental unit of the network Tie – type of relationship connecting nodes Tie-strength
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Amazon’s Political Book Purchasing  Network, Oct. 2008,  (credit: Valdis  Krebs)
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The value of network positions When dividing $100, each structurally distinct node necessarily averages $33.33 What happens when 1 bargaining path is removed? A A B Node Mean A $8.46 B $83.08
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Adding a new “spoke” Who benefits or loses with an additional player? C C D C Node Mean C  $  12.33  D  $  63.00  F E E Node Mean E  $  42.86  F  $  29.33  G  $  64.29  What about when 2 of the “spokes” can trade?
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Who benefits/loses because of the additional spoke? H
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  • Spring '07
  • GONCALOJ
  • friendship network, Book Purchasing  Network, dynamics Fundamental components, Capital Social Capital, Structural  Holes

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Lecture 14 Social Networks - Networks November 3 2008 What...

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