Social Network Technologies

Social Network Technologies Dr. Harry Chen CMSC 491/691S February 6, 2008

Agenda ,[object Object],[object Object],[object Object],[object Object],Source: http://en.wikipedia.org/wiki/Image:Social-network.svg

Social Network sites ,[object Object]

Let’s define “Social Network sites” ,[object Object],[object Object],[object Object],[object Object],Source: Social Network Sites: Definition, History, and Scholarship , D. Boyd and N. B. Ellison http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html

Why do people join Social Network sites? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Do you have other reasons to join a social network?

Looking back into the past The idea of creating profiles and communicate with strangers are nothing new. Remember ICQ, IRC and MUD. What do you think have caused the sudden explosion of Social Network sites? Source: Social Network Sites: Definition, History, and Scholarship , D. Boyd and N. B. Ellison http://jcmc.indiana.edu/vol13/issue1/boyd.ellison.html

Social Network Analysis ,[object Object],Why do you think it’s important to study social relationships? Source: Social Network Analysis, A Brief Introduction http://www.orgnet.com/sna.html

Key concepts ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Source: http://tinyurl.com/22dhsd http://en.wikipedia.org/wiki/Social_network http://www.orgnet.com/sna.html

Example: Betweenness (1) Heather has less direct connection than Diane. (2) Heather has a “sweeter” spot in the network because she connects two groups of people. (3) Heather is a “single point of failure”. Source: http://www.orgnet.com/sna.html

Who is reading your profile? ,[object Object],Got it! Contact, school, favorites… HTML detected. But, what’s in the page? In order to help computer programs to better understand our profiles and social relationships, we need to express information in an explicit representation.

FOAF (Friend-Of-A-Friend) ,[object Object],[object Object]

An Example: How FOAF works for me http://harry.hchen1.com http://harry.hchen1.com/foaf.rdf FOAF profile crawler

What can you say using FOAF? http://xmlns.com/foaf/spec/

FOAF toys ,[object Object],[object Object],[object Object],[object Object]

XFN (XHTML Friends Network) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],XFN: http://gmpg.org/xfn/

XFN Examples Step 1: Use “rel” tag to define how you are related to this link. Step 2: Let the world know you an XFN page Read more: http://gmpg.org/xfn/join

Harnessing the power of Social Networks ,[object Object],[object Object],[object Object],[object Object],[object Object]

Social Network Innovation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Facebook API ,[object Object],[object Object],[object Object],[object Object]

Criticisms of Facebook API ,[object Object],[object Object],[object Object],[object Object]

Google’s OpenSocial API ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Benefits of using OpenSocial API ,[object Object],[object Object],[object Object],http://code.google.com/apis/opensocial/faq.html

Criticisms of OpenSocial API ,[object Object],[object Object],[object Object],As reported by TechCrunch on November 5, 2007, OpenSocial was also quickly cracked. The total time to crack the OpenSocial-based iLike on Ning was just 20 minutes, according to TechCrunch, with the attacker being able add and remove songs on a user's playlist, and to look into information on their friends. http://en.wikipedia.org/wiki/OpenSocial#Criticism

Google’s Social Graph API ,[object Object],[object Object],[object Object],[object Object]

OpenSocial vs Social Graph API ,[object Object],[object Object],[object Object]

Social Graph API demo http:// code.google.com/apis/socialgraph/docs/examples.html

Criticisms of Social Network sites ,[object Object],[object Object],[object Object]

Summary ,[object Object],[object Object],[object Object],[object Object]

Social Network Technologies

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Social Network Technologies