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Networks: Some Notes

Diego Maranan
dmaranan@upou.edu.ph
Faculty of Information and Communication Studies, UP Open University
GS 197, 11 December 2008
slides omitted from last time
email addresses
issues/questions/reactions from previous class


               (there are no stupid questions)
Networks: A special kind of graph
●   Graph: A collection of nodes interconnected by
    paths
●
    Network: A collection of nodes interconnected
    by communication paths
What does this have to do with
              culture?

Analyzing networks may provide answers to
interesting and important questions regarding
anything that can be represented as a network:


              bodies of knowledge
                 communities
                 organizations
Are “artificial” groups consistent with de facto,
“naturally-occuring” groups?
How robust is the network to ruptures?
Who/what is on the periphery?
Which are nodes connecting different sub-groups? How
should we treat these nodes differently?
What does the shape of the network suggest about how
knowledge circulates in the network
Examples
The Network of Scientific Knowledge
           (Boyard, 2005)


                       Maps generated using
                       eight different journal-
                       journal similarity
                       measures

                       “Biochemistry appears
                       as the most
                       interdisciplinary
                       discipline in science.”
The Internet
on Jan 16, 2005
www.opte.org
“This image shows the hierarchical on
                                                                 structure of the Internet, based
                                                                 the connections between
                                                                 individual nodes (such as service
                                                                 providers). Three distinct regions
                                                                 are apparent: an inner core of
                                                                 highly connected nodes, an outer
                                                                 periphery of isolated networks,
                                                                 and a mantle-like mass of peer-
                                                                 connected nodes. The bigger the
                                                                 node, the more connections it
                                                                 has. Those nodes that are closest
                                                                 to the center are connected to
http://www.technologyreview.com/player/07/06/19Rowe/1.aspx       more well-connected nodes than
                                                                 are those on the periphery.”
“TheInternetAtare about 80of thenodes
                                                                   core:    the center
                                                                                        core
                                                                  through which most traffic flows.
                                                                  Remove the core, and 70 percent
                                                                  of the other nodes are still able to
                                                                  function through peer-to-peer
                                                                  connections.




http://www.technologyreview.com/player/07/06/19Rowe/2.aspx
“Thethe Internet At the veryoredge of
                                                                   periphery:
                                                                              are 5,000     so
                                                                  isolated nodes that are the most
                                                                  dependent upon the core and
                                                                  become cut off if the core is
                                                                  removed or shut down. Yet those
                                                                  nodes within this periphery are
                                                                  able to stay connected because of
                                                                  their peer-to-peer connections.


http://www.technologyreview.com/player/07/06/19Rowe/3.aspx
Mycelium (fungi)
“Nature's original
Internet”

(Paul Stamets, 2007)
The notion of the rhizome
           (Deleuze and Guattari,1987)
●   Connective
    –   Connections are possible at any point
●   Heterogenous
    –   Unlike items can be connected
●   Robust/“asignifying rupture”
    –   e.g., peer-to-peer connections that allow the
        Internet to function even when the most highly-
        connected nodes are remocd
Network economics
Scarcity does not increase value: How useful was it to
  have owned a fax machine when it first came out?




                                      http://flickr.com/photos/nbr/2707844343/sizes/o/
My facebook network
generated using http://nexus.ludios.net


                      Social Networks (1)




                                          Social networking
Subgroups in my network

      Social Networks: Linking
nodes
            connecting
            subgroups




orphaned
nodes and
subgroups
Social network analysis
                                                                                                        Developed at the Human-Computer
                                                                                                        Interaction Lab at University of
                                                                                                        Maryland

                                                                                                        Simultaneously presents statisical
                                                                                                        analysis alongside social network
                                                                                                        analysis graph1

                                                                                                        SNAs can be used to examine power
                                                                                                        relations2




Screenshot from http://www.cs.umd.edu/hcil/socialaction
[1] Adam Perer, & Ben Shneiderman. (2008). Integrating Statistics and Visualization: Case Studies of Gaining Clarity during Exploratory Data Analysis. In Proceedings
of the ACM Conference on Human Factors in Computing Systems. Florence, Italy.
[2] e.g., Padgett, J. F., & Ansell, C. K. (1993). Robust Action and the Rise of the Medici, 1400-1434. American Journal of Sociology, 98(6), 1259.
(SocialAction... in action.)
Some Networked Art Projects I'm Working On
Open Source Dance
            http://www.slideshare.net/diegomaranan/open-source-dance-presentation/




Building dance communities through sharing Creative Commons-licensed choreography and tracking the
                         flow of choreographic ideas across dance communities
Independent Cinema Portal
 http://www.slideshare.net/diegomaranan/proposal-for-a-portal-to-philippine-cinema-using-data-
                              visualization-techniques-presentation/




Facilitating insights into independent cinemas in the Philippines (but can be extended easily to cover
        global cinemas) using data publicly available on the web and data visualization techniques
The Apology Project
http://sites.google.com/site/diegomarananprojects/todo/on-hold/The-Apology-Project




                      A Web 2.0 platform for public apologies
salamat

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Networks: Some Notes

  • 1. Networks: Some Notes Diego Maranan dmaranan@upou.edu.ph Faculty of Information and Communication Studies, UP Open University GS 197, 11 December 2008
  • 2. slides omitted from last time email addresses issues/questions/reactions from previous class (there are no stupid questions)
  • 3. Networks: A special kind of graph ● Graph: A collection of nodes interconnected by paths ● Network: A collection of nodes interconnected by communication paths
  • 4. What does this have to do with culture? Analyzing networks may provide answers to interesting and important questions regarding anything that can be represented as a network: bodies of knowledge communities organizations
  • 5. Are “artificial” groups consistent with de facto, “naturally-occuring” groups? How robust is the network to ruptures? Who/what is on the periphery? Which are nodes connecting different sub-groups? How should we treat these nodes differently? What does the shape of the network suggest about how knowledge circulates in the network
  • 7. The Network of Scientific Knowledge (Boyard, 2005) Maps generated using eight different journal- journal similarity measures “Biochemistry appears as the most interdisciplinary discipline in science.”
  • 8. The Internet on Jan 16, 2005 www.opte.org
  • 9. “This image shows the hierarchical on structure of the Internet, based the connections between individual nodes (such as service providers). Three distinct regions are apparent: an inner core of highly connected nodes, an outer periphery of isolated networks, and a mantle-like mass of peer- connected nodes. The bigger the node, the more connections it has. Those nodes that are closest to the center are connected to http://www.technologyreview.com/player/07/06/19Rowe/1.aspx more well-connected nodes than are those on the periphery.”
  • 10. “TheInternetAtare about 80of thenodes core: the center core through which most traffic flows. Remove the core, and 70 percent of the other nodes are still able to function through peer-to-peer connections. http://www.technologyreview.com/player/07/06/19Rowe/2.aspx
  • 11. “Thethe Internet At the veryoredge of periphery: are 5,000 so isolated nodes that are the most dependent upon the core and become cut off if the core is removed or shut down. Yet those nodes within this periphery are able to stay connected because of their peer-to-peer connections. http://www.technologyreview.com/player/07/06/19Rowe/3.aspx
  • 13. The notion of the rhizome (Deleuze and Guattari,1987) ● Connective – Connections are possible at any point ● Heterogenous – Unlike items can be connected ● Robust/“asignifying rupture” – e.g., peer-to-peer connections that allow the Internet to function even when the most highly- connected nodes are remocd
  • 14. Network economics Scarcity does not increase value: How useful was it to have owned a fax machine when it first came out? http://flickr.com/photos/nbr/2707844343/sizes/o/
  • 15. My facebook network generated using http://nexus.ludios.net Social Networks (1) Social networking
  • 16. Subgroups in my network Social Networks: Linking
  • 17. nodes connecting subgroups orphaned nodes and subgroups
  • 18. Social network analysis Developed at the Human-Computer Interaction Lab at University of Maryland Simultaneously presents statisical analysis alongside social network analysis graph1 SNAs can be used to examine power relations2 Screenshot from http://www.cs.umd.edu/hcil/socialaction [1] Adam Perer, & Ben Shneiderman. (2008). Integrating Statistics and Visualization: Case Studies of Gaining Clarity during Exploratory Data Analysis. In Proceedings of the ACM Conference on Human Factors in Computing Systems. Florence, Italy. [2] e.g., Padgett, J. F., & Ansell, C. K. (1993). Robust Action and the Rise of the Medici, 1400-1434. American Journal of Sociology, 98(6), 1259.
  • 20. Some Networked Art Projects I'm Working On
  • 21. Open Source Dance http://www.slideshare.net/diegomaranan/open-source-dance-presentation/ Building dance communities through sharing Creative Commons-licensed choreography and tracking the flow of choreographic ideas across dance communities
  • 22. Independent Cinema Portal http://www.slideshare.net/diegomaranan/proposal-for-a-portal-to-philippine-cinema-using-data- visualization-techniques-presentation/ Facilitating insights into independent cinemas in the Philippines (but can be extended easily to cover global cinemas) using data publicly available on the web and data visualization techniques