WWW 2014 Proceedings Table of Contents

WWW '14 General Chair's Welcome
Chin-Wan Chung (Korea Advanced Institute of Science and Technology)

WWW'14 Program Chairs' Message
Andrei Broder (Google Inc.)
Kyuseok Shim (Seoul National University)
Torsten Suel (New York University)

WWW2014 IW3C2 Chair's Welcome
Mary Ellen Zurko (Cisco Systems)

The 23rd International World Wide Web Conference (WWW 2014)

WWW 2014 Sponsors and Supporters

Keynote Talks
Session Chairs: Torsten Suel (New York University), Kyuseok Shim (Seoul National University),
Andrei Broder (Google Inc.)

Large Graph Mining: Patterns, Cascades, Fraud Detection, and Algorithms (Page 1)
Christos Faloutsos (Carnegie Mellon University)

Taming the Web (Page 3)
Jong-Deok Choi (Samsung Electronics)

Organizing the Digital World to Empower People to Do More, Know More, and Be More (Page 5)
Qi Lu (Microsoft)

Session 1: Internet Economics & Monetization 1
Session Chair: Stefano Leonardi (Sapienza University of Rome)

Machine Learning in an Auction Environment (Page 7)
Patrick Hummel (Google Inc.)
R. Preston McAfee (Google Inc.)

Optimal Revenue-Sharing Double Auctions with Applications to Ad Exchanges (Page 19)
Renato Gomes (Toulouse School of Economics)
Vahab Mirrokni (Google Research)

Advertising in a Stream (Page 29)
Samuel Ieong (Google Inc.)
Mohammad Mahdian (Google Inc.)
Sergei Vassilvitskii (Google Inc.)

Session 2: Security 1
Session Chair: Yongdae Kim (KAIST)

The Company You Keep: Mobile Malware Infection Rates and Inexpensive Risk Indicators (Page 39)
Hien Thi Thu Truong (University of Helsinki)
Eemil Lagerspetz (University of Helsinki & Helsinki Institute for Information Technology)
Petteri Nurmi (University of Helsinki & Helsinki Institute for Information Technology)
Adam J. Oliner (University of California, Berkeley)
Sasu Tarkoma (University of Helsinki & Helsinki Institute for Information Technology)
N. Asokan (Aalto University & University of Helsinki)
Sourav Bhattacharya (University of Helsinki & Helsinki Institute for Information Technology)

Stranger Danger: Exploring the Ecosystem of Ad-Based URL Shortening Services (Page 51)
Nick Nikiforakis (KU Leuven)
Federico Maggi (Politecnico di Milano)
Gianluca Stringhini (University of California, Santa Barbara)
M. Zubair Rafique (KU Leuven)
Wouter Joosen (KU Leuven)
Christopher Kruegel (University of California, Santa Barbara)
Frank Piessens (KU Leuven)
Giovanni Vigna (University of California, Santa Barbara)
Stefano Zanero (Politecnico di Milano)

Automatic Detection and Correction of Web Application Vulnerabilities Using Data Mining to Predict False Positives (Page 63)
Ibéria Medeiros (University of Lisboa)
Nuno F. Neves (University of Lisboa)
Miguel Correia (University of Lisboa)

Session 3: Collaborative Recommendation Systems
Session Chair: Hady Lauw (Singapore Management University)

Personalized Collaborative Clustering (Page 75)
Yisong Yue (Disney Research)
Chong Wang (Carnegie Mellon University)
Khalid El-Arini (Facebook)
Carlos Guestrin (University of Washington)

Local Collaborative Ranking (Page 85)
Joonseok Lee (Georgia Institute of Technology)
Samy Bengio (Google Research)
Seungyeon Kim (Georgia Institute of Technology)
Guy Lebanon (Amazon)
Yoram Singer (Google Research)

CoBaFi - Collaborative Bayesian Filtering (Page 97)
Alex Beutel (Carnegie Mellon University)
Kenton Murray (Carnegie Mellon University)
Christos Faloutsos (Carnegie Mellon University)
Alexander J. Smola (Carnegie Mellon University)

Session 4: Web Search 1
Session Chair: Milad Shokouhi (Microsoft Research)

Efficient Estimation for High Similarities Using Odd Sketches (Page 109)
Michael Mitzenmacher (Harvard University)
Rasmus Pagh (IT University of Copenhagen)
Ninh Pham (IT University of Copenhagen)

Composite Retrieval of Heterogeneous Web Search (Page 119)
Horatiu Bota (University of Glasgow)
Ke Zhou (University of Edinburgh)
Joemon M. Jose (University of Glasgow)
Mounia Lalmas (Yahoo Labs)

Contextual and Dimensional Relevance Judgments for Reusable SERP-Level Evaluation (Page 131)
Peter B. Golbus (Northeastern University)
Imed Zitouni (Microsoft)
Jin Young Kim (Microsoft)
Ahmed Hassan (Microsoft Research)
Fernando Diaz (Microsoft Research)

Session 5: Crowdsourcing 1
Session Chair: Gianluca Demartini (University of Fribourg)

Quizz: Targeted Crowdsourcing with a Billion (Potential) Users (Page 143)
Panagiotis G. Ipeirotis (Google & New York University)
Evgeniy Gabrilovich (Google)

Community-Based Bayesian Aggregation Models for Crowdsourcing (Page 155)
Matteo Venanzi (University of Southampton)
John Guiver (Microsoft Research)
Gabriella Kazai (Microsoft)
Pushmeet Kohli (Microsoft Research)
Milad Shokouhi (Microsoft)

The Wisdom of Minority: Discovering and Targeting the Right Group of Workers for Crowdsourcing (Page 165)
Hongwei Li (University of California, Berkeley)
Bo Zhao (Microsoft Research, Silicon Valley)
Ariel Fuxman (Microsoft Research, Silicon Valley)

Session 6: Security 2
Session Chair: Nicolas Christin (Carnegie Mellon University)

Monitoring Web Browsing Behavior with Differential Privacy (Page 177)
Liyue Fan (Emory University)
Luca Bonomi (Emory University)
Li Xiong (Emory University)
Vaidy Sunderam (Emory University)

Quite a Mess in My Cookie Jar!: Leveraging Machine Learning to Protect Web Authentication (Page 189)
Stefano Calzavara (Università Ca' Foscari)
Gabriele Tolomei (Università Ca' Foscari)
Michele Bugliesi (Università Ca' Foscari)
Salvatore Orlando (Università Ca' Foscari)

Reconciling Mobile App Privacy and Usability on Smartphones: Could User Privacy Profiles Help? (Page 201)
Bin Liu (Carnegie Mellon University)
Jialiu Lin (Carnegie Mellon University)
Norman Sadeh (Carnegie Mellon University)

Session 7: Social Networks 1
Session Chair: Munmun De Choudhury (Microsoft Research)

Random Walks Based Modularity: Application to Semi-Supervised Learning (Page 213)
Robin Devooght (Université Libre de Bruxelles)
Amin Mantrach (Yahoo! Labs)
Ilkka Kivimäki (Université catholique de Louvain)
Hugues Bersini (Université Libre de Bruxelles)
Alejandro Jaimes (Yahoo! Labs)
Marco Saerens (Université catholique de Louvain)

High Quality, Scalable and Parallel Community Detection for Large Real Graphs (Page 225)
Arnau Prat-Pérez (Universitat Politècnica de Catalunya)
David Dominguez-Sal (Sparsity Technologies)
Josep-Lluis Larriba-Pey (Universitat Politècnica de Catalunya)

Dynamic and Historical Shortest-Path Distance Queries on Large Evolving Networks by Pruned Landmark Labeling (Page 237)
Takuya Akiba (The University of Tokyo)
Yoichi Iwata (The University of Tokyo)
Yuichi Yoshida (National Institute of Informatics and Preferred Infrastructure, Inc.)

Session 8: Matching
Session Chair: Alessandro Panconesi (Sapienza University of Rome)

To Gather Together for a Better World: Understanding and Leveraging Communities in Micro-Lending Recommendation (Page 249)
Jaegul Choo (Georgia Institute of Technology)
Daniel Lee (Georgia Tech Research Institute)
Bistra Dilkina (Georgia Institute of Technology)
Hongyuan Zha (Georgia Institute of Technology)
Haesun Park (Georgia Institute of Technology)

Recommending Investors for Crowdfunding Projects (Page 261)
Jisun An (University of Cambridge)
Daniele Quercia (Yahoo! Labs)
Jon Crowcroft (University of Cambridge)

Understanding Spatial Homophily: The Case of Peer Influence and Social Selection (Page 271)
Ke Zhang (University of Pittsburgh)
Konstantinos Pelechrinis (University of Pittsburgh)

Session 9: User Interaction
Session Chair: Xing Xie (Microsoft Research Asia)

Designing and Deploying Online Field Experiments (Page 283)
Eytan Bakshy (Facebook)
Dean Eckles (Facebook)
Michael S. Bernstein (Stanford University)

Local Business Ambience Characterization Through Mobile Audio Sensing (Page 293)
He Wang (University of Illinois at Urbana-Champaign)
Dimitrios Lymberopoulos (Microsoft Research)
Jie Liu (Microsoft Research)

Social Bootstrapping: How Pinterest and Last.fm Social Communities Benefit by Borrowing Links from Facebook (Page 305)
Changtao Zhong (King's College London)
Mostafa Salehi (University of Tehran)
Sunil Shah (University of California, Berkeley)
Marius Cobzarenco (Last.fm)
Nishanth Sastry (King's College London)
Meeyoung Cha (Korea Advanced Institute of Science and Technology)

Session 10: Recommendation and Predictions
Session Chair: Ronny Lempel (Yahoo! Labs)

Modeling Contextual Agreement in Preferences (Page 315)
Loc Do (Singapore Management University)
Hady W. Lauw (Singapore Management University)

A Monte Carlo Algorithm for Cold Start Recommendation (Page 327)
Yu Rong (The Chinese University of Hong Kong)
Xiao Wen (The Chinese University of Hong Kong)
Hong Cheng (The Chinese University of Hong Kong)

Was This Review Helpful to You? It Depends! Context and Voting Patterns in Online Content (Page 337)
Ruben Sipos (Cornell University)
Arpita Ghosh (Cornell University)
Thorsten Joachims (Cornell University)

Session 11: Web Mining 1
Session Chair: U Kang (KAIST)

Reduce and Aggregate: Similarity Ranking in Multi-Categorical Bipartite Graphs (Page 349)
Alessandro Epasto (Sapienza University of Rome)
Jon Feldman (Google Research)
Silvio Lattanzi (Google Research)
Stefano Leonardi (Sapienza University of Rome)
Vahab Mirrokni (Google Research)

Robust Multivariate Autoregression for Anomaly Detection in Dynamic Product Ratings (Page 361)
Nikou Günnemann (Carnegie Mellon University)
Stephan Günnemann (Carnegie Mellon University)
Christos Faloutsos (Carnegie Mellon University)

Mining Novelty-Seeking Trait Across Heterogeneous Domains (Page 373)
Fuzheng Zhang (University of Science and Technology of China & Microsoft Research)
Nicholas Jing Yuan (Microsoft Research)
Defu Lian (University of Science and Technology of China & Microsoft Research)
Xing Xie (Microsoft Research)

Session 12: Content Analysis 1 - Entities
Session Chair: Zhong Su (IBM)

Discovering Emerging Entities with Ambiguous Names (Page 385)
Johannes Hoffart (Max Planck Institute for Informatics)
Yasemin Altun (Google Inc.)
Gerhard Weikum (Max Planck Institute for Informatics)

Effective Named Entity Recognition for Idiosyncratic Web Collections (Page 397)
Roman Prokofyev (University of Fribourg)
Gianluca Demartini (University of Fribourg)
Philippe Cudré-Mauroux (University of Fribourg)

Deduplicating a Places Database (Page 409)
Nilesh Dalvi (Facebook)
Marian Olteanu (Facebook)
Manish Raghavan (University of California, Berkeley)
Philip Bohannon (Facebook)

Session 13: User Behavior
Session Chair: Haewoon Kwak (Telefonica Research)

The Dynamics of Repeat Consumption (Page 419)
Ashton Anderson (Stanford University)
Ravi Kumar (Google, Inc.)
Andrew Tomkins (Google, Inc.)
Sergei Vassilvitskii (Google, Inc.)

From Devices to People: Attribution of Search Activity in Multi-User Settings (Page 431)
Ryen W. White (Microsoft Research)
Ahmed Hassan (Microsoft Research)
Adish Singla (ETH Zurich)
Eric Horvitz (Microsoft Research)

Demographics, Weather and Online Reviews: A Study of Restaurant Recommendations (Page 443)
Saeideh Bakhshi (Georgia Institute of Technology)
Partha Kanuparthy (Yahoo! Labs)
Eric Gilbert (Georgia Institute of Technology)

Session 14: Semantic Web 1
Session Chair: Fabien Gandon (INRIA)

TripleProv: Efficient Processing of Lineage Queries in a Native RDF Store (Page 455)
Marcin Wylot (University of Fribourg)
Philippe Cudré-Mauroux (University of Fribourg)
Paul Groth (VU University Amsterdam)

RDF Analytics: Lenses over Semantic Graphs (Page 467)
Dario Colazzo (Université Paris Dauphine)
François Goasdoué (Université de Rennes 1)
Ioana Manolescu (INRIA & Université Paris-Sud)
Alexandra Roati? (Université Paris-Sud & INRIA)

Formalisation and Experiences of R2RML-Based SPARQL to SQL Query Translation Using Morph (Page 479)
Freddy Priyatna (Universidad Politécnica de Madrid)
Oscar Corcho (Universidad Politécnica de Madrid)
Juan Sequeda (University of Texas at Austin)

Session 15: Web Mining 2
Session Chair: Yisong Yue (Disney Research)

Codewebs: Scalable Homework Search for Massive Open Online Programming Courses (Page 491)
Andy Nguyen (Stanford University)
Christopher Piech (Stanford University)
Jonathan Huang (Stanford University)
Leonidas Guibas (Stanford University)

Joint Question Clustering and Relevance Prediction for Open Domain Non-Factoid Question Answering (Page 503)
Snigdha Chaturvedi (University of Maryland)
Vittorio Castelli (IBM T.J. Watson Research Center)
Radu Florian (IBM T.J. Watson Research Center)
Ramesh M. Nallapati (IBM T.J. Watson Research Center)
Hema Raghavan (IBM T.J. Watson Research Center)

Knowledge Base Completion via Search-Based Question Answering (Page 515)
Robert West (Stanford University)
Evgeniy Gabrilovich (Google, Inc.)
Kevin Murphy (Google, Inc.)
Shaohua Sun (Google, Inc.)
Rahul Gupta (Google, Inc.)
Dekang Lin (Google, Inc.)

Session 16: Content Analysis 2 - Topics
Session Chair: Panos Ipeirotis (NYU)

A Time-Based Collective Factorization for Topic Discovery and Monitoring in News (Page 527)
Carmen Vaca (Politecnico di Milano & Escuela Superior Politecnica del Litoral)
Amin Mantrach (Yahoo! Labs)
Alejandro Jaimes (Yahoo! Labs)
Marco Saerens (Université de Louvain)

The Dual-Sparse Topic Model: Mining Focused Topics and Focused Terms in Short Text (Page 539)
Tianyi Lin (The Chinese University of Hong Kong)
Wentao Tian (The Chinese University of Hong Kong)
Qiaozhu Mei (University of Michigan)
Hong Cheng (The Chinese University of Hong Kong)

Acquisition of Open-Domain Classes via Intersective Semantics (Page 551)
Marius Pa?ca (Google Inc.)

Session 17: Software Infrastructure
Session Chair: Greg Malewicz (Facebook)

Automated Runtime Recovery for QoS-Based Service Composition (Page 563)
Tian Huat Tan (Singapore University of Technology and Design)
Manman Chen (National University of Singapore)
Étienne André (Université Paris 13)
Jun Sun (Singapore University of Technology and Design)
Yang Liu (Nanyang Technological University)
Jin Song Dong (National University of Singapore)

Similarity-Based Web Browser Optimization (Page 575)
Haoyu Wang (Peking University)
Mengxin Liu (Peking University)
Yao Guo (Peking University)
Xiangqun Chen (Peking University)

Temporal QoS-Aware Web Service Recommendation via Non-negative Tensor Factorization (Page 585)
Wancai Zhang (Beihang University)
Hailong Sun (Beihang University)
Xudong Liu (Beihang University)
Xiaohui Guo (Beihang University)

Session 18: Online Experiments & Advertising
Session Chair: Ee-Peng Lim (Singapore Management University)

Adscape: Harvesting and Analyzing Online Display Ads (Page 597)
Paul Barford (University of Wisconsin-Madison)
Igor Canadi (University of Wisconsin-Madison)
Darja Krushevskaja (Rutgers University)
Qiang Ma (Rutgers University)
S. Muthukrishnan (Rutgers University)

Statistical Inference in Two-Stage Online Controlled Experiments with Treatment Selection and Validation (Page 609)
Alex Deng (Microsoft)
Tianxi Li (University of Michigan)
Yu Guo (Microsoft)

An Experimental Evaluation of Bidders' Behavior in Ad Auctions (Page 619)
Gali Noti (Hebrew University of Jerusalem)
Noam Nisan (Microsoft Research & Hebrew University of Jerusalem)
Ilan Yaniv (Hebrew University of Jerusalem)

Session 19: Social Networks 2
Session Chair: Markus Strohmaie (University of Koblenz)

Chaff from the Wheat : Characterization and Modeling of Deleted Questions on Stack Overflow (Page 631)
Denzil Correa (Indraprastha Institute of Information Technology -Delhi)
Ashish Sureka (Indraprastha Institute of Information Technology -Delhi)

Timeline Generation: Tracking Individuals on Twitter (Page 643)
Jiwei Li (Carnegie Mellon University)
Claire Cardie (Cornell University)

Modeling and Predicting the Growth and Death of Membership-Based Websites (Page 653)
Bruno Ribeiro (Carnegie Mellon University)

Session 20: The Future
Session Chair: Christo Wilson (Northeastern University)

Word Storms: Multiples of Word Clouds for Visual Comparison of Documents (Page 665)
Quim Castellà (University of Edinburgh)
Charles Sutton (University of Edinburgh)

Exploring the Filter Bubble: The Effect of Using Recommender Systems on Content Diversity (Page 677)
Tien T. Nguyen (University of Minnesota)
Pik-Mai Hui (University of Minnesota)
F. Maxwell Harper (University of Minnesota)
Loren Terveen (University of Minnesota)
Joseph A. Konstan (University of Minnesota)

Engaging with Massive Online Courses (Page 687)
Ashton Anderson (Stanford University)
Daniel Huttenlocher (Cornell University)
Jon Kleinberg (Cornell University)
Jure Leskovec (Stanford University)

Session 21: Internet Economics & Monetization 2
Session Chair: Preston McAfee (Google)

User Satisfaction in Competitive Sponsored Search (Page 699)
David Kempe (University of Southern California)
Brendan Lucier (Microsoft Research)

Price Competition in Online Combinatorial Markets (Page 711)
Moshe Babaioff (Microsoft Research)
Noam Nisan (Microsoft Research and Hebrew University)
Renato Paes Leme (Google Research)

Revenue Monotone Mechanisms for Online Advertising (Page 723)
Gagan Goel (Google Inc.)
Mohammad Reza Khani (University of Maryland)

Session 22: Semantic Web 2
Session Chair: Philippe Cudre-Mauroux (University of Fribourg)

Semantic Stability in Social Tagging Streams (Page 735)
Claudia Wagner (GESIS & University of Koblenz)
Philipp Singer (Graz University of Technology)
Markus Strohmaier (GESIS & University of Koblenz)
Bernardo A. Huberman (HP Labs - Palo Alto)

Test-Driven Evaluation of Linked Data Quality (Page 747)
Dimitris Kontokostas (University of Leipzig)
Patrick Westphal (University of Leipzig)
Sören Auer (University of Bonn and Fraunhofer IAIS)
Sebastian Hellmann (University of Leipzig)
Jens Lehmann (University of Leipzig)
Roland Cornelissen (Stichting Bibliotheek.nl)
Amrapali Zaveri (University of Leipzig)

Don't Like RDF Reification? Making Statements about Statements Using Singleton Property (Page 759)
Vinh Nguyen (Wright State University)
Olivier Bodenreider (National Institute of Health)
Amit Sheth (Wright State University)

Session 23: Web Mining 3
Session Chair: Yutaka Matsuo (University of Tokyo)

Comment-Based Multi-View Clustering of Web 2.0 Items (Page 771)
Xiangnan He (National University of Singapore)
Min-Yen Kan (National University of Singapore)
Peichu Xie (National University of Singapore)
Xiao Chen (Chinese Academy of Sciences)

Finding Progression Stages in Time-Evolving Event Sequences (Page 783)
Jaewon Yang (Stanford University)
Julian McAuley (Stanford University)
Jure Leskovec (Stanford University)
Paea LePendu (Stanford University)
Nigam Shah (Stanford University)

On Estimating the Average Degree (Page 795)
Anirban Dasgupta (IIT Gandhinagar)
Ravi Kumar (Google Inc.)
Tamas Sarlos (Google Inc.)

Session 24: Social Networks 3 - Modeling Influences in Graphs
Session Chair: Alan Mislove (Northeastern University)

Who Proposed the Relationship? - Recovering the Hidden Directions of Undirected Social Networks (Page 807)
Jun Zhang (Tsinghua University & Ministry of Education, P. R. China)
Chaokun Wang (Tsinghua University & Ministry of Education, P. R. China)
Jianmin Wang (Tsinghua University & Ministry of Education, P. R. China)

User Profiling in an Ego Network: Co-Profiling Attributes and Relationships (Page 819)
Rui Li (University of Illinois at Urbana-Champaign)
Chi Wang (University of Illinois at Urbana-Champaign)
Kevin Chen-Chuan Chang (University of Illinois at Urbana-Champaign & University of Illinois at Singapore)

Attributed Graph Models: Modeling Network Structure with Correlated Attributes (Page 831)
Joseph J. Pfeiffer III (Purdue University)
Sebastian Moreno (Purdue University)
Timothy La Fond (Purdue University)
Jennifer Neville (Purdue University)
Brian Gallagher (Lawrence Livermore National Laboratory)

Session 25: Content Quality & Popularity
Session Chair: Andrei Broder (Google)

WikiWho: Precise and Efficient Attribution of Authorship of Revisioned Content (Page 843)
Fabian Flöck (Karlsruhe Institute of Technology)
Maribel Acosta (Karlsruhe Institute of Technology)

What Makes a Good Biography? Multidimensional Quality Analysis Based on Wikipedia Article Feedback Data (Page 855)
Lucie Flekova (German Institute for Educational Research and Educational Information & Technische Universität Darmstadt)
Oliver Ferschke (German Institute for Educational Research and Educational Information & Technische Universität Darmstadt)
Iryna Gurevych (German Institute for Educational Research and Educational Information & Technische Universität Darmstadt)

What Makes an Image Popular? (Page 867)
Aditya Khosla (Massachusetts Institute of Technology)
Atish Das Sarma (eBay Research Labs)
Raffay Hamid (DigitalGlobe)

Session 26: Conflicts & Games
Session Chair: Torsten Suel (New York University)

STFU NOOB! Predicting Crowdsourced Decisions on Toxic Behavior in Online Games (Page 877)
Jeremy Blackburn (University of South Florida)
Haewoon Kwak (Telefonica Research)

Unveiling Group Characteristics in Online Social Games: A Socio-Economic Analysis (Page 889)
Taejoong Chung (Seoul National University)
Jinyoung Han (Seoul National University)
Daejin Choi (Seoul National University)
Taekyoung Ted Kwon (Seoul National University)
Huy Kang Kim (Korea University)
Yanghee Choi (Seoul National University)

XXXtortion? Inferring Registration Intent in the .XXX TLD (Page 901)
Tristan Halvorson (University of California, San Diego)
Kirill Levchenko (University of California, San Diego)
Stefan Savage (University of California, San Diego)
Geoffrey M. Voelker (University of California, San Diego)

Session 27: Social Networks 4 - Diffusion
Session Chair: Daniele Quercia (Yahoo! Labs)

The Bursty Dynamics of the Twitter Information Network (Page 913)
Seth Myers (Stanford University)
Jure Leskovec (Stanford University)

Can Cascades be Predicted? (Page 925)
Justin Cheng (Stanford University)
Lada A. Adamic (Facebook)
P. Alex Dow (Facebook)
Jon Kleinberg (Cornell University)
Jure Leskovec (Stanford University)

How to Influence People with Partial Incentives (Page 937)
Erik D. Demaine (Massachusetts Institute of Technology)
MohammadTaghi Hajiaghayi (University of Maryland)
Hamid Mahini (University of Maryland)
David L. Malec (University of Maryland)
S. Raghavan (University of Maryland)
Anshul Sawant (University of Maryland)
Morteza Zadimoghadam (Massachusetts Institute of Technology)

Session 28: Web Search 2
Session Chair: Wei-Ying Ma (Microsoft Research Asia)

Fast Topic Discovery from Web Search Streams (Page 949)
Di Jiang (Hong Kong University of Science and Technology)
Kenneth Wai-Ting Leung (Hong Kong University of Science and Technology)
Wilfred Ng (Hong Kong University of Science and Technology)

A Hierarchical Dirichlet Model for Taxonomy Expansion for Search Engines (Page 961)
Jingjing Wang (University of Illinois at Urbana-Champaign)
Changsung Kang (Yahoo! Labs)
Yi Chang (Yahoo! Labs)
Jiawei Han (University of Illinois at Urbana-Champaign)

Recent and Robust Query Auto-Completion (Page 971)
Stewart Whiting (University of Glasgow)
Joemon M. Jose (University of Glasgow)