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Lecture 1Jan 08, 2008
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Outline
Course logisticsIntroducing tools to be used in the courseOverview of Social Web and Web 2.0
DefinitionHistoryKey elementsExample applications
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Logistics
Weekly CourseworkAssignmentsFinal Project
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Weekly Coursework
Assigned reading2 papers out of 4-6 assigned readings for two
topics per week
Response to assigned reading2 postings
A critique, an elaborated question creating discussion, or a reply to earlier posts
To be posted by Sunday midnight before the class in Comtella-D
15% of the grade
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Weekly Coursework
Learning journal Reflection of what you have learned about the
topics covered last weekAbout one paragraphTo be posted by the next class on your blog
8% of the grade
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Weekly Coursework
Resource sharingFinding 2 interesting resources (a system, a
video, a blog posting, a comic, etc.) related to either topics discussed every class
Include a short remark describing the resource
To be posted by the next class in Umtella
5% of the gradeShow and Tell
2 times throughout the semesterPresents the resources you have found to class
5% of the grade
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Assignments & Final Project
AssignmentsCreating “About You” on Facebook (2%)Programming assignment using social web
technologies (10%)Before midterm
Comprehensive study of several social systems (15%)
Midterm
Final projectGroup projectMash-ups, Facebook APIs, DRUPAL, … (40%)
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Social networkingUser InteractionCreating and Sharing of content
PurposeAbout You
URL: www.facebook.com
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Wordpress Blog
WeblogSoftware tools allowing easy creation of a website
PurposePersonal learning journal
URL: www.wordpress.com
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Wiki
Collaborative development of a websitePurpose
Summary of lectures
Sample wikihttp://ir.exp.sis.pitt.edu/paws_resources/index.php/Main_Page
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Umtella
PurposeResource sharing
URL: http://umtella.usask.ca/um
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Comtella-D
Discussion forumPurpose
Postings on assigned readingsURL
http://fire.usask.ca/Login.aspx
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CoPE
Paper summary sharing sitePurpose
Post summaries of core topic papersURL: http://adapt2.sis.pitt.edu/cope/
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CiteULike
Research paper sharing sitePurpose
Post discovered relevant papers
URL:http://www.citeulike.org/
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Social Web
What do you think?
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The Social Web
Open global distributed data sharing network similar to today's World Wide Web, except instead of linking documents, the Social Web will link people, organizations, and concepts.
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Coverage of Social Web in Media
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Web 2.0
Term was introduced following the first O'Reilly Media Web 2.0 conference in 2004
By September 2005, a Google search for Web 2.0 returned more than 9.5 million results
Next generation web exploiting user-generated content in sophisticated and powerful way
Web 2.0 video by Tim OR’eilly (http://youtube.com/watch?v=CQibri7gpLM)
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What Web 2.0 is and what is not
Semantic web
Collection of new web technologies
Innovative applications of existing
technologies
blogs, wikis, and RSS
Living Web Read-Write Web
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What is Web 2.0
Web 1.0 Web 1.0
Web 2.0
Semantic Web
User Centric
Data Centric
Fun Video on YouTube (http://youtube.com/watch?v=XPYLn2QblNI)
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Key Elements
What comes to your mind first when you think about web 2.0?
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Key Elements
1. Collective IntelligenceThe web of connections
grows organically as an output of the collective activity of all web users
Critical mass of participation act as filtering what is valuable
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User reviews on Amazon.com
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Key Elements
• 25%-40% of Amazon’s sales• 1/5 of netflix rentals comes
from not top 3000 movies
2. Long TailFirst coined by Chris Anderson (2004)
“Businesses with distribution power can sell a greater volume of otherwise hard-to-find items at small volumes than of popular items at large volumes. “
Majority of truly relevant information available on the web is not on the well known web servers
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Key Elements
3. Data ReuseUsage of APIs (Application Programming
Interfaces)Mash-ups
programming on the web
High level of abstraction
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Successes
Amazon.com Winning over competitors by engaging users
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Successes
Google PageRank search algorithmUsing the link structure of the web
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Successes
eBayCollective activity of all its users
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Time-bar of Web 2.0
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Collaboration & Collective Intelligence
Intelligence that emerges from collaboration of many individuals
Social navigationNavigation towards cluster of peopleNavigation because other people have looked at
somethingFollowing footprint of others
Collaborative browsingNavigation of the Internet by several people
sharing the same information seeking goal and interests
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Community based Systems
Harnessing the power of the community to create and structure new informationCommunity based web searchCommunity based browsing
1
10Synthesizers
100consumers
creators
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Technologies
RSSReally Simple SyndicationXML based metadata contentProvides updates when the content is modified
Web services"a software system designed to support interoperable Machine to Machine
interaction over a network." SOAP
Simple Object Access ProtocolA protocol for exchanging XML-based messages over computer networks,
normally using HTTP/HTTPSAjax
Asynchronous JavaScript and XMLA group of inter-related web development techniques used for creating
interactive web applicationsMash-up
A web application that combines data from more than one source into a single integrated tool
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Social Technologies
FolksonomyCollaborative tagging
The practice and method of collaboratively creating and managing tags to annotate and categorize content
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Social Technologies
PodcastingiPod + BroadcastA collection of digital media files which is
distributed over the Internet using syndication feeds for playback on portable media players and personal computers
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Famous Web 2.0 Applications
WikipediaLaunched in 2001Largest and fastest growing, and most popular reference workAs of December 2007
9 ¼ million articles in 253 languages2,154,000 articles in English
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Famous Web 2.0 Applications
Delicious & FlickrPioneered the concept of folksonomy
Collaborative categorization using freely chosen keywords (tags)
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Famous Web 2.0 Applications
CloudmarkCollaborative spam filtering
Aggregate the individual decisions of email users
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Famous Web 2.0 Applications
SourceForge.netPeer-production methods of open source software projects
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Future
2.0 2.0
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Reading for next class
Social Navigation1. Footprints: history-rich tools for information
foraging (http://www.citeulike.org/user/brusilovsky/article/518781)
2. Supporting Social Navigation on the World-Wide-Web (http://www.citeulike.org/user/claudioferreira/article/86730)
Social Search