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Lecture 1
Jan 08, 2008
Outline
Course logistics
Introducing tools to be used in the course
Overview of Social Web and Web 2.0
Definition
History
Key elements
Example applications
Logistics
Weekly Coursework
Assignments
Final Project
Weekly Coursework
Assigned reading
2 papers out of 4-6 assigned readings for two topics per week
Response to assigned reading
2 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
Weekly Coursework
Learning journal
Reflection of what you have learned about the topics covered last week
About one paragraph
To be posted by the next class on your blog
8% of the grade
Weekly Coursework
Resource sharingFinding 2 interesting resources (a system, a video, a blog posting, a comic, etc.) related to either topics discussed every classInclude a short remark describing the resource
To be posted by the next class in Umtella
5% of the grade
Show and Tell2 times throughout the semester
Presents the resources you have found to class
5% of the grade
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 project
Mash-ups, Facebook APIs, DRUPAL, … (40%)
Social networking
User Interaction
Creating and Sharing of content
Purpose
About You
URL: www.facebook.com
Wordpress Blog
Weblog
Software tools allowing easy creation of a website
Purpose
Personal learning journal
URL: www.wordpress.com
Wiki
Collaborative development of a website
Purpose
Summary of lectures
Sample wiki
http://ir.exp.sis.pitt.edu/paws_resources/index.php/Main_Page
Umtella
Purpose
Resource sharing
URL: http://umtella.usask.ca/um
Comtella-D
Discussion forumPurpose
Postings on assigned readings
URLhttp://fire.usask.ca/Login.aspx
CoPE
Paper summary sharing site
Purpose
Post summaries of core topic papers
URL: http://adapt2.sis.pitt.edu/cope/
CiteULike
Research paper sharing site
Purpose
Post discovered relevant papers
URL:http://www.citeulike.org/
Social Web
What do you think?
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.
Coverage of Social Web in Media
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)
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
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)
Key Elements
What comes to your mind first when you think about web 2.0?
Key Elements
1. Collective Intelligence
The 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
User reviews on Amazon.com
Key Elements
• 25%-40% of Amazon’s sales
• 1/5 of netflix rentals comes
from not top 3000 movies
2. Long Tail
First 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
Key Elements
3. Data Reuse
Usage of APIs (Application Programming Interfaces)
Mash-ups
programming on the web
High level of abstraction
Successes
Amazon.com
Winning over competitors by engaging users
Successes
Google PageRank search algorithm
Using the link structure of the web
Successes
eBay
Collective activity of all its users
Time-bar of Web 2.0
Collaboration & Collective Intelligence
Intelligence that emerges from collaboration of many individuals
Social navigationNavigation towards cluster of people
Navigation because other people have looked at something
Following footprint of others
Collaborative browsingNavigation of the Internet by several people sharing the same information seeking goal and interests
Community based Systems
Harnessing the power of the community to create and structure new information
Community based web search
Community based browsing1
10Synthesizers
100consumers
creators
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."
SOAPSimple Object Access ProtocolA protocol for exchanging XML-based messages over computer networks, normally using HTTP/HTTPS
AjaxAsynchronous JavaScript and XMLA group of inter-related web development techniques used for creating interactive web applications
Mash-upA web application that combines data from more than one source into a single integrated tool
Social Technologies
Folksonomy
Collaborative tagging
The practice and method of
collaboratively creating and managing
tags to annotate and categorize
content
Social Technologies
Podcasting
iPod + Broadcast
A collection of digital media files which is distributed over the Internet using syndication feeds for playback on portable media players and personal computers
Famous Web 2.0 Applications
Wikipedia
Launched in 2001
Largest and fastest growing, and most popular reference work
As of December 2007
9 ¼ million articles in 253 languages
2,154,000 articles in English
Famous Web 2.0 Applications
Delicious & Flickr
Pioneered the concept of folksonomy
Collaborative categorization using freely chosen keywords (tags)
Famous Web 2.0 Applications
Cloudmark
Collaborative spam filtering
Aggregate the individual decisions of email users
Famous Web 2.0 Applications
SourceForge.net
Peer-production methods of open source software projects
Future
2.0 2.0
Reading for next class
Social Navigation
1. 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