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.

ICWSM-09 Accepted Papers

Full Papers | Poster Papers | Demonstrations | Data Challenge Workshop

Full Papers

17 : Community Structure and Information Flow in Usenet: Improving Analysis with a Thread Ownership Model
Mary McGlohon, Matthew Hurst

18 : Modeling Blog Dynamics
Michaela Goetz, Jure Leskovec, Mary McGlohon, Christos Faloutsos

26 : RevRank: A Fully Unsupervised Algorithm for Selecting the Most Helpful Book Reviews
Oren Tsur, Ari Rappoport

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

34 : You Are Where You Edit: Locating Wikipedia Contributors through Edit Histories
Michael Lieberman, Jimmy Lin

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

70 : Motivational, Structural and Tenure Factors that Impact Online Community Photo Sharing
Oded Nov, Mor Naaman, Chen Ye

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

81 : 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, Hélène Girard, Fabien Granjon, Charles Nepote, Zbigniew Smoreda, Dilara Trupia, Cezary Ziemlicki

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

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

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

100 : Targeting Sentiment Expressions through Supervised Ranking of Linguistic Configurations
Jason Kessler, Nicolas Nicolov

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

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

128 : Spectrum: Retrieving Different Points of View from the Blogosphere
Jiahui Liu, Lawrence Birnbaum, Bryan Pardo

133 : Predicting Outcome for Collaborative Featured Article Nomination in Wikipedia
Meiqun Hu, Ee-Peng Lim, Ramayya Krishnan

134 : What Are They Blogging About? Personality, Topic and Motivation in Blogs
Alastair Gill, Scott Nowson, Jon Oberlander

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

147 : Gesundheit! Modeling Contagion through Facebook News Feed
Eric Sun, Itamar Rosenn, Cameron Marlow, Thomas Lento

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

Poster Papers

11 : Event Detection and Tracking in Social Streams
Hassan Sayyadi, Matthew Hurst, Alexey Maykov

13 : Blogging Together: An Examination of Group Blogs
Marti Hearst, Susan Dumais

19 : Optimal Heterophily for Word-of-Mouth Diffusion
Hikaru Yamamoto, Naohiro Matsumura

21 : Local Lexical Alignment in the Flickr Social Network
Alain Barrat, Ciro Cattuto

22 : Social Knowledge-Driven Music Hit Prediction
Kerstin Bischoff, Claudiu S. Firan, Mihai Georgescu, Wolfgang Nejdl, Raluca Paiu

23 : Who Do You Follow? Exploring Social Capital in the Brazilian Twittersphere
Raquel Recuero, Gabriela Zago

25 : High-level Features for Learning Subjective Language across Domains
Dinko Lambov, Gael Dias, Veska Noncheva

31 : Identifying Differences in News Coverage between Cultural/Ethnic Groups
Charles Ward, Mikhail Bautin, Steven Skiena

33 : An Examination of Language Use in Online Dating Profiles
Meenakshi Nagarajan, Marti Hearst

39 : Analysis of Social Influence in Online Book Reviews
Patty Sakunkoo, Nathan Sakunkoo

40 : Characterization of FriendFeed - A Web-based Social Aggregation Service
Trinabh Gupta, Sanchit Garg, Mahanti Anirban, Niklas Carlsson, Martin Arlitt

44 : Dreamcatcher: Synthesizing the Cognitive Maps of Collectivities
Myriam Abramson

49 : A Comparative Analysis of Trust-Enhanced Recommenders for Controversial Items
Patricia Victor, Chris Cornelis, Martine De Cock, Ankur Teredesai

50 : Characterizing the Portuguese Blogosphere
Telmo Couto, Cristina Ribeiro, Sérgio Nunes

51 : The Evolution of Scientific Paper Title Networks
Vahed Qazvinian, Dragomir R. Radev

55 : Collecting and Sharing Observations with Semantic Support
Sari Vainikainen, Antti Nummiaho, Asta Bäck, Timo Laakko

56 : Visualizing Cross-Lingual/Cross-Cultural Differences in Concerns in Multilingual Blogs
Hiroyuki Nakasaki, Mariko Kawaba, Sayuri Yamazaki, Takehito Utsuro, Tomohiro Fukuhara

58 : The Use of Weblogs in Spanish Mainstream Media
Bella Palomo, Koldo Meso

60 : Compositionality Principle in Recognition of Fine-Grained Emotions from Text
Alena Neviarouskaya, Helmut Prendinger, Mitsuru Ishizuka

61 : Self-Presentation of Personality during Online Profile Creation
Scott Counts, Kristin Stecher

63 : Large Scale Book Annotation with Social Tags
Sharon Givon, Victor Lavrenko

67 : The Distribution of Online Reputation: Audience and Influence of Musicians on MySpace
Jean-Samuel Beuscart, Thomas Couronne

72 : Connecting Corresponding Identities across Communities
Reza Zafarani, Huan Liu

77 : Trust Incident Account Model: Preliminary Indicators for Trust Rhetoric and Trust or Distrust in Blogs
Victoria Rubin

82 : Adaptive Weblog Post Filtering Based on User Browsing History
Ali Farahmand-Nejad, Sadegh Kharazmi, Shahabedin Bayati, Hassan Abolhassani

83 : From Episodes to Sagas: Understanding the News by Identifying Temporally Related Story Sequences
Ramnath Balasubramanyan, Frank Lin, William W. Cohen, Matthew Hurst, Noah A. Smith

84 : Network Analysis of an Emergent Massively Collaborative Creation Community: How Can People Create Videos Collaboratively without Collaboration?
Hamasaki Masahiro, Hideaki Takeda, Takuichi Nishimura

89 : Navigation Patterns from and to Social Media
Michael Gamon, Christian Konig

91 : Salsa: Leveraging Email to Create a Social Network for the Enterprise
Kristin Stecher, Scott Counts, Lili Cheng, Shane Williams, Andrzej Turski

96 : MakeMyPage: Social Media Meets Automatic Content Generation
Francisco Iacobelli, Kristian Hammond, Lawrence Birnbaum

98 : Information Cascades in the Blogosphere: A Look Behind the Curtain
Manos Papagelis, Nilesh Bansal, Nick Koudas

101 : Connecting Users with Similar Interests Across Multiple Web Services
Haewoon Kwak, Hwa-Yong Shin, Jong-Il Yoon, Sue Moon

102 : Information Diffusion in Computer Science Citation Networks
Xiaolin Shi, Belle Tseng, Lada Adamic

103 : Considering the Sources: Comparing Linking Patterns in Usenet and Blogs
Mary McGlohon, Matthew Hurst

105 : Blogs as Predictors of Movie Success
Eldar Sadikov, Aditya Parameswaran, Petros Venetis

107 : Finding Opinionated Blogs Using Statistical Classifiers and Lexical Features
Feifan Liu, Bin Li, Yang Liu

110 : Is Your Profile Picture Worth 1000 Words? Photo Characteristics Associated with Personality Impression Agreement
Fitzgerald Steele, Jr., David Evans, Rachel Green

113 : Distinguishing Knowledge vs Social Capital in Social Media with Roles and Context
Vladimir Barash, Marc Smith, Lise Getoor, Howard Welser

115 : Delta TFIDF: An Improved Feature Space for Sentiment Analysis
Justin Martineau, Tim Finin

116 : JAM: Joint Action Matrix Factorization for Summarizing a Temporal Heterogeneous Social Network
Yu-Ru Lin, Hari Sundaram, Aisling Kelliher

117 : A Utility for Estimating the Relative Contributions of Wiki Authors
Ofer Arazy, Eleni Stroulia

118 : Predicting the Polarity Strength of Adjectives Using WordNet
Gbolahan K. Williams, Sarabjot Singh Anand

120 : Analyzing and Predicting Community Preference of Socially Generated Metadata: A Case Study on Comments in the Digg Community
Elham Khabiri, Chiao-Fang Hsu, James Caverlee

121 : Detecting Topic Drift with Compound Topic Models
Daniel Knights, Michael Mozer, Nicolas Nicolov

122 : I Think You Know Who I Am: Bloggers' Perceived Identifiability
Chyng-Yang Jang

123 : Regression-Based Summarization of Email Conversations
Jan Ulrich, Giuseppe Carenini, Gabriel Murray, Raymond Ng

124 : Leaders and Negotiators: An Influence-based Metric for Rank
Rumi Ghosh, Kristina Lerman

127 : Guanxi in the Chinese Web
Louis Yu, Valerie King, Yan Zhuang

129 : Emotionality in Text as Predictor of Behavior
Elliot Onn, Carey Morewedge

131 : Search in Social Tagging Systems Using Ontological User Profiles
Andriy Shepitsen, Noriko Tomuro

139 : Information Extraction as Link Prediction: Using Curated Citation Networks to Improve Gene Detection
Andrew Arnold, William W. Cohen

140 : Stylometric Analysis of Bloggers' Age and Gender
Goswami Sumit, Sudeshna Sarkar, Mayur Rustagi

144 : User Evaluation of a System for Classifying and Displaying Political Viewpoints of Weblogs
Alice Oh, Hyunjong Lee, Youngmin Kim

152 : Contextuality and Beyond: Investigating an Online Diary Corpus
Laura Teddiman


12 : Gephi: An Open Source Software for Exploring and Manipulating Networks
Mathieu Bastian, Sebastian Heymann, Mathieu Jacomy

66 : From Generating to Mining: Automatically Scripting Conversations Using Existing Online Sources
Nathan Nichols, Lisa Gandy, Kristian Hammond

69 : BlogTrackers: A Tool for Sociologists to Track and Analyze Blogosphere
Nitin Agarwal, Shamanth Kumar, Huan Liu, Mark Woodward

75 : Attentio Brand Maps
Frizo Janssens

87 : Open Domain Collaborative Storytelling With Say Anything
Reid Swanson, Andrew Gordon

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