Blogosphere: Research Issues, Tools and Applications

161 Pages·2008·4.54 MB·English

by  Nitin Agarwal

Blogosphere: Research Issues, Tools and
Huan Liu and Nitin Agarwal
Applications
{Huan.Liu, Nitin.Agarwal.2}@asu.edu
Computer Science and Engineering
Arizona State University
An updated version could be downloaded from
www.public.asu.edu/~huanliu/KDD08BlogosphereTutorial.pdf or www.public.asu.edu/~nagarwa6/KDD08BlogosphereTutorial.pdf
Acknowledgments
• We would like to express our sincere thanks to Magdiel Oliveras Galan,
John J. Salerno, Shankar Subramanya, Sanjay Sundarajan,Lei Tang, Philip S.
Yu , and Alan Zheng Zhao for collaboration, discussion, and valuable
comments.
• This work is, in part, sponsored by AFOSR and ONR grants in 2008.
• This agreement covers the use of all slides of this tutorial.
– You may use these slides freely for teaching if you send us an email
stating the university name and class/course number in advance, and
cite this tutorial.
– If you wish to use these slides in any other ways, please contact (or
email) us. The ppt version contains notes with additional information
such as various sources in addition to References.
Outline
Background: Web 2.0 and Social Networks
•
Blogosphere: Definition, Types, and Comparison
•
Blogosphere Research Issues
•
Tools and APIs
•
Data Collection
•
Measures, Models, and Methods
•
Performance, Evaluation, and Metrics
•
Case Studies
•
References
•
WEB 2.0 AND SOCIAL NETWORKS
Web vs. Web 2.0
Characteristics of
Web 2.0
Rich Internet Applications
•
User generated contents
•
User enriched contents
•
User developed widgets
•
Collaborative environment: Participatory Web, Citizen
•
journalism
Thus, it leverages the power of the Long Tail with user
•
generated data as the driving force
More of a paradigm shift than a technology shift
•
Web 2.0 Services (examples)
• Blogs
– Blogspot
– Wordpress
• Wikis
– Wikipedia
– Wikiversity
• Social Networking Sites
– Facebook
– Myspace
– Orkut
• Digital media sharing websites
– Youtube
– Flickr
• Social Tagging
– Del.icio.us
• Others
– Twitter
– Yelp
Top 20 Most Visited Websites
Internet traffic report by Alexa on July 29th 2008
•
1 Yahoo! 11 Orkut
2 Google 12 RapidShare
3 YouTube 13 Baidu.com
4 Windows Live 14 Microsoft Corporation
5 Microsoft Network 15 Google India
6 Myspace 16 Google Germany
7 Wikipedia 17 QQ.Com
8 Facebook 18 EBay
9 Blogger 19 Hi5
10 Yahoo! Japan 20 Google France
40% of the top 20 websites are Web 2.0 sites
•
Social Networks
A social structure made of nodes (individuals or
•
organizations) that are related to each other by various
interdependencies like friendship, kinship, like, ...
Graphical representation
•
– Nodes = members
– Edges = relationships
Social Networks