<p>WSDM 2012</p><p>Efficient Misbehaving User Detection in Online Video Chat Services Hanqiang Cheng, Yu-Li Liang, Xinyu Xing, Xue Liu, Richard Han, Qin Lv and Shivakant Mishra</p><p>Beyond Co-occurrence: Discovering and Visualizing Tag Relationships from Geo-spatial and Temporal Similarities Haipeng Zhang, Mohammed Korayem, Erkang You and David Crandall</p><p>Object Matching in Tweets with Spatial Models Nilesh Dalvi, Ravi Kumar and Bo Pang mTrust: Discerning Multi-Faceted Trust in a Connected World Jiliang Tang, Huiji Gao and Huan Liu</p><p>Comment Spam Detection by Sequence Mining Ravi Kant, Srinivasan Sengamedu and Krishnan Kumar</p><p>Topical Clustering of Search Results Ugo Scaiella, Paolo Ferragina, Andrea Marino and Massimiliano Ciaramita</p><p>Query Suggestion by Constructing Term-Transition Graphs Yang Song, Dengyong Zhou and Li-Wei He</p><p>Effective Query Formulation with Multiple Information Sources Michael Bendersky, Donald Metzler and Bruce Croft</p><p>Daily Deals: Prediction, Social Diffusion, and Reputational Ramifications John Byers, Michael Mitzenmacher and Georgios Zervas</p><p>Identifying Content for Planned Events Across Social Media Sites Hila Becker, Dan Iter, Mor Naaman and Luis Gravano A Straw Shows Which Way the Wind Blows: Potential Popularity Ranking from Early Votes Peifeng Yin, Ping Luo, Min Wang and Wang-Chien Lee</p><p>Finding Your Friends and Following Them to Where You Are Adam Sadilek, Henry Kautz and Jeffrey Bigham</p><p>SIGIR 2012</p><p>Explicit Relevance Models in Intent-Oriented Information Retrieval Diversification Saul Vargas (Universidad Autonoma de Madrid) Pablo Castells (Universidad Autonoma de Madrid) David Vallet (Universidad Autonoma de Madrid) </p><p>Diversity by Proportionality: An Election-based Approach to Search Result Diversification Van Dang (University of Massachusetts Amherst) Bruce Croft (University of Massachusetts Amherst) </p><p>Exploring Social Influence for Recommendation - A Generative Model Approach Mao Ye (Penn State University) Xingjie Liu (Penn State University) Wang-Chien Lee (The Pennsylvania State University) </p><p>Personalization of Search Results Using Interaction Behaviors in Search Sessions Chang Liu (Rutgers University) Cole Michael (Rutgers University) Nicholas J Belkin (Rutgers, The State University of New Jersey) </p><p>Fighting against Web Spam: A Novel Propagation Method based on Click-through Data. Chao Wei (Tsinghua University) Yiqun Liu (Tsinghua University) Min Zhang (Dept of Computer Science, Tsinghua University) Shaoping Ma (Tsinghua University) Liyun Ru (Tsinghua University) </p><p>What Reviews are Satisfactory: Novel Features for Automatic Helpfulness Voting Yu Hong (Soochow University) Jun Lu (Soochow University) Jianmin Yao (Soochow University) Qiaoming Zhu (School of Compuer Science & Technology ) </p><p>Modeling User Posting Behavior on Social Media Zhiheng Zu (Institute of Automation) Qing Yang (Institute of Automation, CAS) </p><p>Friend or Frenemy? Predicting Signed Ties in Social Networks Shuang-Hong Yang (Georgia Institute of Technology) Alex Smola (Yahoo! Research) Bo Long (Yahoo! Labs) Hongyuan Zha (Georgia Institute of Technology) Yi Chang (Yahoo! Labs) </p><p>Predicting Quality Flaws in User-generated Content: The Case of Wikipedia Maik Anderka (Bauhaus University Weimar) Benno Stein (Bauhaus University Weimar) Nedim Lipka (Bauhaus University Weimar) </p><p>Umut Ozertem, Olivier Chapelle, Pinar Donmez, Emre Velipasaoglu: Learning to suggest: a machine learning framework for ranking query suggestions. </p><p>Jun Miao, Jimmy Xiangji Huang, Zheng Ye: Proximity-based rocchio's model for pseudo relevance. </p><p>Giacomo Berardi, Andrea Esuli, Fabrizio Sebastiani: A utility-theoretic ranking method for semi-automated text classification. 961-970</p><p>ICWSM 2012 Virality and Susceptibility in Information Diffusions Tuan-Anh Hoang, Ee-Peng Lim (Singapore Management University)</p><p>Coping with the Document Frequency Bias in Sentiment Classification Abdelhalim Rafrafi, Vincent Guigue, Patrick Gallinari (Université Pierre et Marie Curie)</p><p>Extracting Diverse Sentiment Expressions with Target-dependent Polarity from Twitter Lu Chen (Wright State University), Wenbo Wang (Wright State University), Meenakshi Nagarajan (IBM Research), Shaojun Wang (Wright State University), Amit P. Sheth (Wright State University)</p><p>ACM HT 2012</p><p>Content vs. Context for Sentiment Analysis: a comparative analysis over microblogs Fotis Aisopos; George Papadakis; Konstantinos Tserpes; Theodora Varvarigou</p><p>KDD 2012</p><p>Batch Mode Active Sampling based on Marginal Probability Distribution Matching Author(s): Rita Chattopadhyay*, Arizona State University; Zheng Wang, Arizona State University; Wei Fan, IBM T.J.Watson Research; Ian Davidson, University of California - Davis; Sethuraman Panchanathan, Arizona State University; Jieping Ye, Arizona State University</p><p>Circle-based Recommendation in Online Social Networks Author(s): Xiwang Yang*, ECE department, Polytechnic In; Harald Steck, Bell Labs, Alcatel-Lucent Murray Hill, NJ; yong Liu, ECE department, Polytechnic Institute of New York University</p><p>ComSoc: Adaptive Transfer of User Behaviors across Composite Social Networks Author(s): Erheng Zhong*, HKUST; Wei Fan, IBM Research; Junwei Wang; Lei Xiao; Yong Li</p><p>Discovering Value from Community Activity on Focused Question- Answering Sites: A Case Study of Stack Overflow Author(s): Ashton Anderson*, Stanford; Dan Huttenlocher, Cornell University; Jon Kleinberg, Cornell University; Jure Leskovec, Stanford University</p><p>Event-based Social Networks: Linking the Online and Offline Social Worlds Author(s): Xingjie Liu*, The Pennsalvania State Univ; QI HE, IBM Almaden Research Center; Yuanyuan Tian, IBM Almaden Research; Wang-Chien Lee, Pennsylvania State University; John McPherson, IBM Almaden Research Center; Jiawei Han, University of Illinois at Urbana-Champaign</p><p>Information Diffusion and External Influence in Networks Author(s): Seth Myers*, Stanford University; Jure Leskovec, Stanford University; Chenguang Zhu, Stanford University</p><p>Online Learning to Diversify from Implicit Feedback Author(s): Karthik Raman*, Cornell University; Pannaga Shivaswamy, Cornell University; Thorsten Joachims, Cornell University</p><p>Review Spam Detection via Temporal Pattern Discovery Author(s): Sihong Xie*, UIC; Guan Wang, UIC; Shuyang Lin, UIC; Philip S Yu, UIC</p><p>The Untold Story of the Clones: Content-agnostic Factors that Impact YouTube Video Popularity Author(s): Youmna Borghol, NICTA; Sebastien Ardon, NICTA; Niklas Carlsson*, Linkoping University; Derek Eager, University of Saskatchewan; Anirban Mahanti, National ICT Australia (NICTA) Unsupervised Feature Selection for Linked Social Media Data Author(s): Jiliang Tang*, ARIZONA STATE UNIVERISTY; Huan Liu, ARIZONA STATE UNIVERISTY</p><p>WWW 2012</p><p>Bin Xu, Jiajun Bu, Chun Chen, Deng Cai: An exploration of improving collaborative recommender systems via user-item subgroups. 21-30</p><p>Saptarshi Ghosh, Bimal Viswanath, Farshad Kooti, Naveen Kumar Sharma, Gautam Korlam, Fabrício Benevenuto, Niloy Ganguly, P. Krishna Gummadi: Understanding and combating link farming in the twitter social network. 61-70 </p><p>Chao Yang, Robert Chandler Harkreader, Jialong Zhang, Seungwon Shin, Guofei Gu: Analyzing spammers' social networks for fun and profit: a case study of cyber criminal ecosystem on twitter. 71-80 </p><p>Abhinav Mishra, Rajeev Rastogi: Semi-supervised correction of biased comment ratings. 181-190</p><p>Anders Brodersen, Salvatore Scellato, Mirjam Wattenhofer: YouTube around the world: geographic popularity of videos. 241-250 </p><p>Lei Yang, Tao Sun, Ming Zhang, Qiaozhu Mei: We know what @you #tag: does the dual role affect hashtag adoption? 261-270 </p><p>Mrinmaya Sachan, Danish Contractor, Tanveer A. Faruquie, L. Venkata Subramaniam: Using content and interactions for discovering communities in social networks. 331-340 </p><p>Wangqun Lin, Xiangnan Kong, Philip S. Yu, Quanyuan Wu, Yan Jia, Chuan Li: Community detection in incomplete information networks. 341-350 Greg Ver Steeg, Aram Galstyan: Information transfer in social media. 509-518 </p><p>Eytan Bakshy, Itamar Rosenn, Cameron Marlow, Lada A. Adamic: The role of social networks in information diffusion. 519-528 </p><p>Vineet Chaoji, Sayan Ranu, Rajeev Rastogi, Rushi Bhatt: Recommendations to boost content spread in social networks. 529-538</p>