Full Papers

• 
  Lada A. Adamic, Debra Lauterbach, ChunYuen Teng, Mark S. Ackerman: Rating Friends Without Making Enemies.
• 
  Muhammad Aurangzeb Ahmad, Brian Keegan, Dmitri Williams, Jaideep Srivastava, Noshir S. Contractor: Trust Amongst Rogues? A Hypergraph Approach for Comparing Clandestine Trust Networks in MMOGs.
• 
  Jisun An, Meeyoung Cha, P. Krishna Gummadi, Jon Crowcroft: Media Landscape in Twitter: A World of New Conventions and Political Diversity.
• 
  Erik Aumayr, Jeffrey Chan, Conor Hayes: Reconstruction of Threaded Conversations in Online Discussion Forums.
• 
  Lars Backstrom, Eytan Bakshy, Jon M. Kleinberg, Thomas M. Lento, Itamar Rosenn: Center of Attention: How Facebook Users Allocate Attention across Friends.
• 
  Christian Bauckhage: Insights into Internet Memes.
• 
  Michael S. Bernstein, Andrés Monroy-Hernández, Drew Harry, Paul André, Katrina Panovich, Gregory G. Vargas: 4chan and /b/: An Analysis of Anonymity and Ephemerality in a Large Online Community.
• 
  Dominique Cardon, Guilhem Fouetillou, Camille Roth: Two Paths of Glory - Structural Positions and Trajectories of Websites within Their Topical Territory.
• 
  Deepayan Chakrabarti, Kunal Punera: Event Summarization Using Tweets.
• 
  Jonathan Chang, Eric Sun: Location3: How Users Share and Respond to Location-Based Data on Social.
• 
  Zhiyuan Cheng, James Caverlee, Kyumin Lee, Daniel Z. Sui: Exploring Millions of Footprints in Location Sharing Services.
• 
  Michael Conover, Jacob Ratkiewicz, Matthew Francisco, Bruno Gonçalves, Filippo Menczer, Alessandro Flammini: Political Polarization on Twitter.
• 
  Scott Counts, Kristie Fisher: Taking It All In? Visual Attention in Microblog Consumption.
• 
  Onkar Dabeer, Prachi Mehendale, Aditya Karnik, Atul Saroop: Timing Tweets to Increase Effectiveness of Information Campaigns.
• 
  Elizabeth M. Daly, Michael J. Muller, Liang Gou, David R. Millen: Social Lens: Personalization Around User Defined Collections for Filtering Enterprise Message Streams.
• 
  Kushal Shailesh Dave, Rushi Bhatt, Vasudeva Varma: Modelling Action Cascades in Social Networks.
• 
  Munmun De Choudhury, Scott Counts, Mary Czerwinski: Find Me the Right Content! Diversity-Based Sampling of Social Media Spaces for Topic-Centric Search.
• 
  Christopher DuBois, James R. Foulds, Padhraic Smyth: Latent Set Models for Two-Mode Network Data.
• 
  Lindsay T. Graham, Samuel D. Gosling: Can the Ambiance of a Place be Determined by the User Profiles of the People Who Visit It?
• 
  Laura Hasler, Ian Ruthven: Escaping Information Poverty through Internet Newsgroups.
• 
  Jonathan Hurlock, Max L. Wilson: Searching Twitter: Separating the Tweet from the Chaff.
• 
  Adam D. I. Kramer, Cindy K. Chung: Dimensions of Self-Expression in Facebook Status Updates.
• 
  David Laniado, Riccardo Tasso, Yana Volkovich, Andreas Kaltenbrunner: When the Wikipedians Talk: Network and Tree Structure of Wikipedia Discussion Pages.
• 
  Kyumin Lee, Brian David Eoff, James Caverlee: Seven Months with the Devils: A Long-Term Study of Content Polluters on Twitter.
• 
  Yu-Ru Lin, James P. Bagrow, David Lazer: More Voices Than Ever? Quantifying Media Bias in Networks.
• 
  Avishay Livne, Matthew P. Simmons, Eytan Adar, Lada A. Adamic: The Party Is Over Here: Structure and Content in the 2010 Election.
• 
  Sofus A. Macskassy, Matthew Michelson: Why do People Retweet? Anti-Homophily Wins the Day!
• 
  Mikhil Masli, Reid Priedhorsky, Loren G. Terveen: Task Specialization in Social Production Communities: The Case of Geographic Volunteer Work.
• 
  Filipe de Sá Mesquita, Denilson Barbosa: Extracting Meta Statements from the Blogosphere.
• 
  Sean A. Munson, Paul Resnick: The Prevalence of Political Discourse in Non-Political Blogs.
• 
  Nozomi Nori, Danushka Bollegala, Mitsuru Ishizuka: Exploiting User Interest on Social Media for Aggregating Diverse Data and Predicting Interest.
• 
  Oded Nov, Ofer Arazy, David Anderson: Technology-Mediated Citizen Science Participation: A Motivational Model.
• 
  Aditya Pal, Scott Counts: What's in a @name? How Name Value Biases Judgment of Microblog Authors.
• 
  Michael J. Paul, Mark Dredze: You Are What You Tweet: Analyzing Twitter for Public Health.
• 
  Wei Peng, Dae Hoon Park: Generate Adjective Sentiment Dictionary for Social Media Sentiment Analysis Using Constrained Nonnegative Matrix Factorization.
• 
  Marco Pennacchiotti, Ana-Maria Popescu: A Machine Learning Approach to Twitter User Classification.
• 
  Mathieu Perreault, Derek Ruths: The Effect of Mobile Platforms on Twitter Content Generation.
• 
  Jacob Ratkiewicz, Michael Conover, Mark Meiss, Bruno Gonçalves, Alessandro Flammini, Filippo Menczer: Detecting and Tracking Political Abuse in Social Media.
• 
  Raquel Recuero, Ricardo Araujo, Gabriela Zago: How Does Social Capital Affect Retweets?
• 
  Timo Reuter, Philipp Cimiano, Lucas Drumond, Krisztian Buza, Lars Schmidt-Thieme: Scalable Event-Based Clustering of Social Media Via Record Linkage Techniques.
• 
  Jakob Rogstadius, Vassilis Kostakos, Aniket Kittur, Boris Smus, Jim Laredo, Maja Vukovic: An Assessment of Intrinsic and Extrinsic Motivation on Task Performance in Crowdsourcing Markets.
• 
  Salvatore Scellato, Anastasios Noulas, Renaud Lambiotte, Cecilia Mascolo: Socio-Spatial Properties of Online Location-Based Social Networks.
• 
  N. Sadat Shami, Michael J. Muller, David R. Millen: Just a Click Away: Social Search and Metadata in Predicting File Discovery.
• 
  Hossam Sharara, William Rand, Lise Getoor: Differential Adaptive Diffusion: Understanding Diversity and Learning whom to Trust in Viral Marketing.
• 
  Matthew P. Simmons, Lada A. Adamic, Eytan Adar: Memes Online: Extracted, Subtracted, Injected, and Recollected.
• 
  Tao Sun, Wei Chen, Zhenming Liu, Yajun Wang, Xiaorui Sun, Ming Zhang, Chin-Yew Lin: Participation Maximization Based on Social Influence in Online Discussion Forums.
• 
  Zoltán Szlávik, Wojtek Kowalczyk, Martijn C. Schut: Diversity Measurement of Recommender Systems under Different User Choice Models.
• 
  Greg Ver Steeg, Rumi Ghosh, Kristina Lerman: What Stops Social Epidemics?
• 
  Sudha Verma, Sarah Vieweg, William J. Corvey, Leysia Palen, James H. Martin, Martha Palmer, Aaron Schram, Kenneth Mark Anderson: Natural Language Processing to the Rescue? Extracting "Situational Awareness" Tweets During Mass Emergency.
• 
  Karen Wade, Derek Greene, Conrad Lee, Daniel Archambault, Pádraig Cunningham: Identifying Representative Textual Sources in Blog Networks.
• 
  Jianshu Weng, Bu-Sung Lee: Event Detection in Twitter.
• 
  Jiang Yang, Meredith Ringel Morris, Jaime Teevan, Lada A. Adamic, Mark S. Ackerman: Culture Matters: A Survey Study of Social Q&A Behavior.
• 
  Daniel Xiaodan Zhou, Paul Resnick, Qiaozhu Mei: Classifying the Political Leaning of News Articles and Users from User Votes.

Poster Papers

• 
  Sibel Adali, Xiaohui Lu, Malik Magdon-Ismail, Jonathan T. Purnell: Prominence Ranking in Graphs with Community Structure.
• 
  M. Eduardo Ares, Javier Parapar, Alvaro Barreiro: Improving Text Clustering with Social Tagging.
• 
  Sitaram Asur, Bernardo A. Huberman, Gábor Szabó, Chunyan Wang: Trends in Social Media: Persistence and Decay.
• 
  Hila Becker, Mor Naaman, Luis Gravano: Beyond Trending Topics: Real-World Event Identification on Twitter.
• 
  Hila Becker, Mor Naaman, Luis Gravano: Selecting Quality Twitter Content for Events.
• 
  Joan-Isaac Biel, Oya Aran, Daniel Gatica-Perez: You Are Known by How You Vlog: Personality Impressions and Nonverbal Behavior in YouTube.
• 
  Johan Bollen, Huina Mao, Alberto Pepe: Modeling Public Mood and Emotion: Twitter Sentiment and Socio-Economic Phenomena.
• 
  Petter Bae Brandtzæg, Oded Nov: Facebook Use and Social Capital - A Longitudinal Study.
• 
  Michael J. Brzozowski, Daniel M. Romero: Who Should I Follow? Recommending People in Directed Social Networks.
• 
  Ovidiu Dan, Junlan Feng, Brian D. Davison: A Bootstrapping Approach to Identifying Relevant Tweets for Social TV.
• 
  Gianluca Demartini, Stefan Siersdorfer, Sergiu Chelaru, Wolfgang Nejdl: Analyzing Political Trends in the Blogosphere.
• 
  José Luís Devezas, Sérgio Nunes, Cristina Ribeiro: Using the H-Index to Estimate Blog Authority.
• 
  Albert Feller, Matthias Kuhnert, Timm Oliver Sprenger, Isabell M. Welpe: Divided They Tweet: The Network Structure of Political Microbloggers and Discussion Topics.
• 
  Benjamin Fields, Christophe Rhodes, Mark d'Inverno: Automatic Group-Interactive Radio Using Social-Networks of Musicians.
• 
  Lisa M. Gandy, Kristian J. Hammond: Creating Conversations: An Automated Dialog System.
• 
  Ullas Gargi, Wenjun Lu, Vahab S. Mirrokni, Sangho Yoon: Large-Scale Community Detection on YouTube for Topic Discovery and Exploration.
• 
  Daniel Gayo-Avello, Panagiotis Takis Metaxas, Eni Mustafaraj: Limits of Electoral Predictions Using Twitter.
• 
  Barbara Gligorijevic, Benjamin Leong: Trust, Reputation and the Small Firm: Building Online Brand Reputation for SMEs.
• 
  Michelle L. Gregory, Dave W. Engel, Eric Belanga Bell, Andy Piatt, Scott Dowson, Andrew J. Cowell: Automatically Identifying Groups Based on Content and Collective Behavioral Patterns of Group Members.
• 
  Georg Groh, Jan Hauffa: Characterizing Social Relations Via NLP-Based Sentiment Analysis.
• 
  Marco Guerini, Carlo Strapparava, Gözde Özbal: Exploring Text Virality in Social Networks.
• 
  Alexander Hanna, Ben Sayre, Leticia Bode, JungHwan Yang, Dhavan V. Shah: Mapping the Political Twitterverse: Candidates and Their Followers in the Midterms.
• 
  Sanda M. Harabagiu, Andrew Hickl: Relevance Modeling for Microblog Summarization.
• 
  Lichan Hong, Gregorio Convertino, Ed H. Chi: Language Matters In Twitter: A Large Scale Study.
• 
  Tereza Iofciu, Peter Fankhauser, Fabian Abel, Kerstin Bischoff: Identifying Users Across Social Tagging Systems.
• 
  Ming Jiang, Tao Dong, Yung-Ju Chang: Structure and Reciprocity in Technology-Centered Q&A Communities.
• 
  Shafiq R. Joty, Giuseppe Carenini, Gabriel Murray, Raymond T. Ng: Supervised Topic Segmentation of Email Conversations.
• 
  Elham Khabiri, James Caverlee, Chiao-Fang Hsu: Summarizing User-Contributed Comments.
• 
  Efthymios Kouloumpis, Theresa Wilson, Johanna Moore: Twitter Sentiment Analysis: The Good the Bad and the OMG!
• 
  James Lanagan, Alan F. Smeaton: Using Twitter to Detect and Tag Important Events in Sports Media.
• 
  Yelena Mejova, Padmini Srinivasan: Exploring Feature Definition and Selection for Sentiment Classifiers.
• 
  Mahalia Miller, Conal Sathi, Daniel Wiesenthal, Jure Leskovec, Christopher Potts: Sentiment Flow Through Hyperlink Networks.
• 
  Alan Mislove, Sune Lehmann, Yong-Yeol Ahn, Jukka-Pekka Onnela, J. Niels Rosenquist: Understanding the Demographics of Twitter Users.
• 
  Ramesh Nallapati, Xiaolin Shi, Daniel A. McFarland, Jure Leskovec, Daniel Jurafsky: LeadLag LDA: Estimating Topic Specific Leads and Lags of Information Outlets.
• 
  François Nel, Marie-Jeanne Lesot, Thomas Delavallade, Philippe Capet: Information Propagation on the Web: Data Extraction, Modeling and Simulation.
• 
  Thin Nguyen, Dinh Q. Phung, Brett Adams, Svetha Venkatesh: Towards Discovery of Influence and Personality Traits through Social Link Prediction.
• 
  Anastasios Noulas, Salvatore Scellato, Cecilia Mascolo, Massimiliano Pontil: An Empirical Study of Geographic User Activity Patterns in Foursquare.
• 
  Aditya Pal, Jaya Kawale: Connecting Mutually Influencing Bloggers.
• 
  Sharoda A. Paul, Lichan Hong, Ed H. Chi: Is Twitter a Good Place for Asking Questions? A Characterization Study.
• 
  Adam Perer, Ido Guy, Erel Uziel, Inbal Ronen, Michal Jacovi: Unearthing People from the SaND: Relationship Discovery with Social Media in the Enterprise.
• 
  Sasa Petrovic, Miles Osborne, Victor Lavrenko: RT to Win! Predicting Message Propagation in Twitter.
• 
  Joseph J. Pfeiffer III, Jennifer Neville: Methods to Determine Node Centrality and Clustering in Graphs with Uncertain Structure.
• 
  Ana-Maria Popescu, Marco Pennacchiotti: "Dancing with the Stars, " NBA Games, Politics: An Exploration of Twitter Users' Response to Events.
• 
  Delip Rao, Michael J. Paul, Clayton Fink, David Yarowsky, Timothy Oates, Glen Coppersmith: Hierarchical Bayesian Models for Latent Attribute Detection in Social Media.
• 
  Stéphane Raux, Nils Grünwald, Christophe Prieur: Describing the Web in less than 140 Characters.
• 
  Daniel Mauricio Romero, Brendan Meeder, Vladimir Barash, Jon M. Kleinberg: Maintaining Ties on Social Media Sites: The Competing Effects of Balance, Exchange, and Betweenness.
• 
  Diego Sáez-Trumper, David F. Nettleton, Ricardo A. Baeza-Yates: High Correlation between Incoming and Outgoing Activity: A Distinctive Property of Online Social Networks?
• 
  Fahad Shah, Gita Reese Sukthankar: Using Network Structure to Identify Groups in Virtual Worlds.
• 
  David A. Shamma, Jude Yew, Lyndon Kennedy, Elizabeth F. Churchill: Viral Actions: Predicting Video View Counts Using Synchronous Sharing Behaviors.
• 
  Yue Shi, Pavel Serdyukov, Alan Hanjalic, Martha Larson: Personalized Landmark Recommendation Based on Geotags from Photo Sharing Sites.
• 
  Mansoureh Takaffoli, Farzad Sangi, Justin Fagnan, Osmar R. Zaïane: MODEC - Modeling and Detecting Evolutions of Communities.
• 
  Jaime Teevan, Meredith Ringel Morris, Katrina Panovich: Factors Affecting Response Quantity, Quality, and Speed for Questions Asked Via Social Network Status Messages.
• 
  Hang Maxime Ung: Social Influence, Popularity and Interestingness of Online Contents.
• 
  David Urbansky, Sandro Reichert, Klemens Muthmann, Daniel Schuster, Alexander Schill: An Optimized Web Feed Aggregation Approach for Generic Feed Types.
• 
  Shanchan Wu, Louiqa Raschid, William Rand: Future Link Prediction in the Blogosphere for Recommendation.
• 
  Shaomei Wu, Chenhao Tan, Jon M. Kleinberg, Michael W. Macy: Does Bad News Go Away Faster?
• 
  Lexing Xie, Apostol Natsev, John R. Kender, Matthew L. Hill, John R. Smith: Tracking Visual Memes in Rich-Media Social Communities.

Demonstration Papers

• 
  Hila Becker, Feiyang Chen, Dan Iter, Mor Naaman, Luis Gravano: Automatic Identification and Presentation of Twitter Content for Planned Events.
• 
  Dana Diminescu, Renault Matthieu, Bourgeois Mehdi, Mathieu Jacomy: Digital Diasporas Atlas Exploration and Cartography of Diasporas in Digital Networks.
• 
  Charles C. Earl, Amos Johnson, Kaakpema Yelpaala, Travis Good: Making Project Team Recommendations from Online Information Sources.
• 
  Shamanth Kumar, Geoffrey Barbier, Mohammad Ali Abbasi, Huan Liu: TweetTracker: An Analysis Tool for Humanitarian and Disaster Relief.
• 
  Timm Oliver Sprenger: TweetTrader.net: Leveraging Crowd Wisdom in a Stock Microblogging Forum.
• 
  David Urbansky, Klemens Muthmann, Lars Kreisz, Alexander Schill: Areca: Online Comparison of Research Results.

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