General Chairs

William W. Cohen
Carnegie Mellon/Google
Nicolas Nicolov
J.D.Power and Associates, McGraw-Hill

Program Chairs

Natalie Glance
Google Inc
Matthew Hurst
Live Labs, Microsoft

Data Chairs

Ian Soboroff
Akshay Java
Live Labs, Microsoft

Panel Chair

Kathy Gill
University of Washington

Local Chair

Cameron Marlow

Tutorials Chair

Chris Diehl
Johns Hopkins University



Closing Remarks




Accepted Papers

Invited Speakers


Call for Papers

Important Dates





ICWSM 2008

ICWSM 2007

Past proceedings

Videolectures from 2008

3rd Int'l AAAI Conference on Weblogs and Social Media

May 17 - 20, 2009, San Jose, California

Sponsored by the Association for the Advancement of Artificial Intelligence.


May 17th (Sun) || May 18th (Mon) || May 19th (Tue) || May 20th (Wed)

Pre-Conference Tutorials

Sunday, May 17, 2009

1:30 - 3:30 pm Tutorial 1: Predictive Modeling with Social Networks
   Jennifer Neville (Purdue University) and Foster Provost (New York University)
3:30 - 4:00 pm Break
4:00 - 6:00 pm Tutorial 2: The Psychology of Social Media
  Sam Gosling (University of Texas, Austin); Kate Niederhoffer (Dachis Corporation)

Technical Program - Accepted Papers

Monday, May 18, 2009

8:45 - 9:00 am Opening Remarks
9:00 - 10:00 am Invited Speaker: Lillian Lee, Cornell University
10:00 - 10:30 am Break
10:30 - 12:00 pm Community
Session Chair: Charles Mi

Gesundheit! Modeling Contagion Through Facebook News Feed [Best paper nominee]
  Eric Sun, Itamar Rosenn, Cameron Marlow, Thomas Lento

Seeking and Offering Expertise across Categories: A Sustainable Mechanism Works for Baidu Knows
  Jiang Yang, Xiao Wei

Community Structure and Information Flow in Usenet: Improving analysis with a thread ownership model
  Mary McGlohon, Matthew Hurst
12:00 - 1:30 pm Lunch
1:30 - 3:30 pm Psychology & Users
Session Chair: Andrew Gordon

Does showing off help to make friends? Experimenting a sociological game on self-exhibition and social networks
  Dominique Cardon, Christophe Aguiton, Aymeric Castelain, Pierre Fremaux, Hèléne Girard, Fabien Granjon, Charles Nepote, Zbigniew Smoreda, Dilara Trupia, Cezary Ziemlicki

What are they blogging about? Personality, topic and motivation in blogs
  Alastair Gill, Scott Nowson, Jon Oberlander

A Social Identity Approach to Identify Familiar Strangers in a Social Network
  Nitin Agarwal, Huan Liu, Sudheendra Murthy, Arunabha Sen, Xufei Wang

You Are Where You Edit: Locating Wikipedia Contributors Through Edit Histories
  Michael Lieberman, Jimmy Lin
3:30 - 4:00 pm Break
4:00 - 5:30 pm Ranking
Session Chair: Jennifer Neville

CourseRank: A Closed-Community Social System through the Magnifying Glass [Best paper nominee]
  Koutrika Georgia, Benjamin Bercovitz, Filip Kaliszan, Henry Liou, Hector Garcia-Molina

Using Transactional Information to Predict Link Strength in Online Social Networks
  Indika Kahanda, Jennifer Neville

RevRank: a Fully Unsupervised Algorithm for Selecting the Most Helpful Book Reviews
  Oren Tsur, Ari Rappoport
6:30 - 10:00 pm Reception at San Jose Tech Museum

Tuesday, May 19, 2009
8:45 - 9:00 am Opening Remarks
9:00 - 10:00 am Invited Speaker: Duncan Watts, Columbia University and Yahoo! Resarch
10:00 - 10:30 am Break
10:30 - 12:00 pm Data Mining & Sentiment Analysis
Session Chair: James G. Shanahan

A Categorical Model for Discovering Latent Structure in Social Annotations
  Said Kashoob, James Caverlee, Ying Ding

Content Based Recommendation and Summarization in the Blogosphere
  Ahmed Hassan, Dragomir R. Radev, Junghoo Cho, Amruta Joshi

Supervised Ranking of Syntactic Configurations for Finding Targets of Sentiment Expressions
  Jason Kessler, Nicolas Nicolov

Cancelled - Predicting Outcome for Collaborative Featured Article Nomination in Wikipedia
  Meiqun Hu, Ee-Peng Lim, Ramayya Krishnan
12:00 - 1:30 pm Lunch
1:30 - 2:30 pm Panel Discussion
Moderator: Kathy E. Gill, University of Washington

System Design and Community Culture
The role of rules and algorithms in shaping human behavior

Lukas Biewald, Dolores Labs
Rashmi Sinha, Slideshare
Cameron Marlow, Facebook
2:30 - 3:00 pm Break
3:00 - 5:00 pm Modeling Social Dynamics
Session Chair: Marti Hearst

Stochastic Models of User-Contributory Web Sites
  Tad Hogg, Kristina Lerman

Personal Information Management vs. Resource Sharing: Towards a Model of Information Behavior in Social Tagging Systems
  Markus Heckner, Michael Heilemann, Christian Wolff

Motivational, Structural and Tenure Factors that Impact Online Community Photo Sharing [Best paper nominee]
  Oded Nov, Mor Naaman, Chen Ye

Modeling Blog Dynamics
  Michaela Goetz, Jure Leskovec, Mary McGlohon, Christos Faloutsos
5:00 - 6:00 pm Poster Madness
6:30 - 8:30 pm Poster Reception at the Marriott San Jose

Wednesday, May 20, 2009

8:45 - 9:00 am Opening Remarks
9:00 - 10:00 am Invited Speaker: Jon Kleinberg, Cornell University, USA
10:00 - 10:30 am Break
10:30 - 12:00 pm Leveraging Diversity
Session Chair: Michael Gamon

Sidelines: An Algorithm for Increasing Diversity in News and Opinion Aggregators
  Sean Munson, Daniel Xiaodan Zhou, Paul Resnick

Diversity of User Activity and Content Quality in Online Communities
  Tad Hogg, Gabor Szabo

Spectrum: Retrieving Different Points of View from the Blogosphere
  Jiahui Liu, Lawrence Birnbaum, Bryan Pardo
12:00 - 12:15 pm Closing Remarks
2:00 - 3:30 pm Data Workshop I

Welcome and introduction
  Ian Soboroff (10 min)

Overview of and the Spinn3r dataset
  Kevin Burton, (30 min)

Flash Floods and Ripples: The Spread of Media Content through the Blogosphere [Best Data workshop paper]
  Meeyoung Cha, Juan Antonio Navarro Perez, and Hamed Haddadi (25 min)

Identifying Personal Stories in Millions of Weblog Entries
  Andrew Gordon and Reid Swanson (25 min)
3:30 - 3:45 pm Break
3:45 - 5:30 pm Data Workshop II

SentiSearch: Exploring Mood on the Web
  Sara Sood and Lucy Vasserman (25 min)

Event Intensity Tracking in Weblog Collections
  Viet Ha Thuc, Yelena Mejova, Christopher Harris and Padmini Srinivasan (25 min)

Quantification of Topic Propagation using Percolation Theory: A study of the ICWSM Network
  Ali Azimi Bolourian, Yashar Moshfeghi and C. J. van Rijsbergen (25 min)

Open discussion: What do you want in a dataset, and what would you do with it? (30 min)

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Microsoft Nielsen Online Spinn3r Visible Technologies

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