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					Enkh-Amgalan Baatarjav
Jedsada Chartree
Thiraphat Meesumrarn
Motivation
 A new way of communication
 Network size (3rd most used SNS: 55m monthly visitors)
    Growth rate (1,381% Feb 2008 - Feb 2009)
    Global
 Social networking


Answer the question of
why we use Twitter
Problem Definition
 Understanding intentions
    Intentions as an individual
    Intentions as a community
    Intentions as a network
 Understanding behavior
    When do they use Twitter?
    Where do they tweet?
 Understanding usage
    To understand in dept of how and why people use Twitter
    To explore micro-blog’s potential impacts on informal
     communication at work
Proposed Method:
Individual
User Intentions categories
• Information Sharing
• Information Seeking
• Friendship-wise


Link analysis algorithm by Jon
Kleinberg

User intentions
• Daily Chatter
• Conversations
• Sharing information
• Reporting news
Proposed Method:
Community
• Analyzing the overlapping
  community structure technique:
  Clique Percolation Method
  (CPM)
• Community is union of members
  who have common K friends
• It implies that inter edge density
  is higher than intra edges density.

Key Term
Key terms are defined by frequency
 of word in each community
Proposed Method:
Network
• Recurring patterns in word
usages
•Trends for the terms “friends” and
“school” from Monday through
Friday in entire data corpus.

•Identifying significant terms in
each day of the week using log-
likelihood ratio
Methodology
 Gathering data
    Collected data at specific times of the day
    Focused on current active users who continually post a
     series of 20 or more updates
    Used a Random walk with backtracking to collect the
     data
How did users access Twitter
                  61% use the web
                  7,5% mobile
                  7.2% IM
                  1.2% Facebook
                  22.4% custom
                  applications
Peak time
             The activity occurs
              between 10 AM and 4
              PM.
             Most twitter updates
              peak around 3 PM and
              reach a low at 4 AM
Locations
             Top 3 are the USA,
              Europe, and Japan
              respectively.
             The Top 10 countries
              after the US account for
              50% of users in the test
              sample are: Japan,
              Germany, U.K., Brazil,
              Holland, France, Spain,
              Belgium, Canada, and
              Italy.
METHODOLOGY
 Interview Method
   Phone Interviews (40-60 minutes each, Sep. - Dec.
   2008)
 Samples
       11 participants from large IT companies
          7 men, 4 women

           Workers and managers
METHODOLOGY                                        (cont.)
 Research Questions
   Why people use Twitter?
   How Twitter is use differently from other
    communication media?
   How micro-blogging influence people at work?
Result
 People use Twitter
   Keep in touch, gather useful information, see for helps and
    opinions, reduce emotional stress
   Frequent brief update about personal life activities, real-time
    information
 Differences from other communication media
   Twitter technology feature service –brevity, mobility, and
    broadcast nature
Result                                                (cont.)
 Potential impacts on informal communication at
  work
   Keeping in touch with friends and colleagues
   More understanding perspective in others’ minds
   Keeping up with what ‘s new with one another
Conclusion
 Three studies conducted to gain an in-dept understanding:
   Users intentions and community structure
   The ways to access and the frequency of using Twitter
   Why and how people use Twitter
   Potential impacts on informal communication at work
References
   Paper 1
    Title: Why we twitter: understanding microblogging usage and communities
    Authors: Akshay Java, Tim Finin, Xiaodan Song, and Belle Tseng
    Forum: In Proceedings of the 9th WebKDD and 1st SNA-KDD 2007 Workshop on Web Mining and Social Network
    Analysis (San Jose, California, August 12 - 12, 2007). WebKDD/SNA-KDD '07. ACM, New York, NY, 56-65.
    Link: http://doi.acm.org/10.1145/134854 9.1348556

   Paper 2
    Title: How and why people Twitter: the role that micro-blogging plays in informal communication at work
    Authors: Dejin Zhao and Mary Beth Rosson
    Forum: In Proceedings of the ACM 2009 international Conference on Supporting Group Work (Sanibel Island,
    Florida, USA, May 10 - 13, 2009). GROUP '09. ACM, New York, NY, 243-252.
    Link: http://doi.acm.org/10.1145/1531674.1531710

   Paper 3
    Title: A few chirps about twitter
    Authors: Balachander Krishnamurthy, Phillipa Gill, and Martin Arlitt
    Forum: In Proceedings of the First Workshop on online Social Networks (Seattle, WA, USA, August 18 - 18, 2008).
    WOSP '08. ACM, New York, NY, 19-24.
    Link: http://doi.acm.org/10.1145/1397735.1397741

				
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