lecture 1 jan 06, 2010
TRANSCRIPT
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Lecture 1Jan 06, 2010
Outline
Course logisticsIntroducing tools to be used in the courseOverview of Social Web and Web 2.0
DefinitionHistoryKey elementsExample applications
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LinkedIn
Social networkingUser Interaction
Creating and Sharing of contentPurpose
About You
URL: www.linkedin.com
Wordpress Blog
WeblogSoftware tools allowingeasy creation of a website
PurposePersonal learning journal:Readings, seminars,thoughts
URL:
www.wordpress.com
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Wiki
Collaborativedevelopment of awebsitePurpose
Summary of lecturepresentations
Sample wikihttp://ir.exp.sis.pitt.edu/paws_resources/
index.php/Main_Page
BibSonomy
PurposeResource sharingResearch paper sharing
URL:http://www. bibsonomy .org
Group: social_web
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CoMeT and Eventur
Sharing, tagging, social networking, trustPurpose
Post and share information about research talks and culturalevents. Engage other users.
URL http://washington.sis.pitt.edu/comet http://eventur.sis.pitt.edu
Social Web
What do you think?
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The New Web: the Web of People
http://www.veryweb.it/?page_id=27
Web 2.0
Term was introduced following the first O'Reilly MediaWeb 2.0 conference in 2004 Web 2.0 video by Tim OReilly
By September 2005, Google search for Web 2.0returned more than 9.5 million results
http://datamining.typepad.com/data_mining/2005/12/the_rise_and_ri.html
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What Web 2.0 is and what is not
Semantic web
Collection of newweb technologies
Innovative applicationsof existing
technologies
blogs, wikis, andRSS
Living Web Read-Write Web
What is Web 2.0
Web 1.0 Web 1.0
Web 2.0
Semantic Web
U s e r C e n t r i c
D a t a C
e n t r i c
Fun Video on YouTube(http://youtube.com/watch?v=XPYLn2QblNI)
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Social Web Web 2.0
Social Web of Web 2.0?
The Social Web
The social web can be described as peopleinterlinked and interacting with engaging contentin a conversational and participatory manner viathe Internet
Since social web applications are built toencourage communication between people, theytypically emphasize some combination of thefollowing social attributes:
Identity: who are you? Reputation: what do people think you stand for? Presence: where are you? Relationships: who are you connected with? who do
you trust? Groups: how do you organize your connections? Conversations: what do you discuss with others? Sharing: what content do you make available for
others to interact with
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The Social WebNext generation web
exploiting user-generated content in sophisticated and powerful way
Key Elements
What comes to your mind first when youthink about web 2.0?
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Key Elements
User-Generatedcontent
The Users Web Blogs Resources Video (YouTube)
User as a first-classparticipant,contributor, author
http://www.masternewmedia.org/news/2006/12/01/social_bookmarking_services_and_tools.htm
Famous Web 2.0 Applications
Delicious & FlickrPioneered the concept of folksonomy
Collaborative categorization using freely chosenkeywords (tags)
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Podcasting
iPod + BroadcastA collection of digital media files which is
distributed over the Internet using syndicationfeeds for playback on portable media playersand personal computers
Key Elements
Collective Intelligence( Wisdom of Crowds)
Critical mass of participation act asfiltering what isvaluable
The web of connections growsorganically as an
output of the collectiveactivity of all webusers
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User reviews on Amazon.com
Google PageRank algorithm
Using the link structure of the web
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Key Elements
Large valuescreated by thecommunity of users throughcollaboration
Applicationspowered by usercommunity
Stigmergy
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Famous Web 2.0 Applications
SourceForge.netPeer-production methods of open source software projects
Famous Web 2.0 Applications
WikipediaLaunched in 2001Largest and fastestgrowing, and mostpopular reference workAs of December 2007
9 million articles in253 languages2,154,000 articles in
English
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eBay
Collective activity of all its users
Cloudmark
Collaborative spam filteringAggregate the individual decisions of email users
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Key Elements
25%-40% of Amazons sales
1/5 of netflix rentals comesfrom not top 3000 movies
Long TailFirst coined by Chris Anderson (2004)
Businesses with distribution power can sell a greatervolume of otherwise hard-to-find items at smallvolumes than of popular items at large volumes.
Majority of truly relevant information availableon the web is not on the well known webservers
Key Elements
Data ReuseUsage of APIs (Application Programming
Interfaces)Mash-ups
programming on the web
High level of abstraction
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RSS Feeds, APIs and Mash-ups
Time-bar of Web 2.0
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Social Web Technologies
Intelligence that emerges from collaborationof many individuals
Social navigationNavigation towards cluster of peopleNavigation because other people have looked at
somethingFollowing footprint of others
Social SearchImproving search using the data from past users
Social Web Technologies
FolksonomyCollaborative taggingThe practice and method of collaboratively creating and managingtags to annotate and categorizecontent
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Social Web Issues
Community based Systems share manyissues, which should be addressedto produces successfulsystems Participation vs lurking Social capital Social networking Trust and reputation Privacy and presence
1
10Synthesizers
100consumers
creators
Social Web Programming
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 creatinginteractive web applications
Mash-upA web application that combines data from more than one source into a
single integrated tool
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Future
2.0 2.0
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 SearchSocial Information Access: The Other Side of the Social Web.
In: V. Geffert, et al. (eds.) Proceedings of SOFSEM 2008,34th International Conference on Current Trends inTheory and Practice of Computer Science, High Tatras,Slovakia, January 19-25, 2008, Springer Verlag, pp. 5-22.