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Detailed Schedule

Program of Main Conference
	*July 25, 2011 Monday*
08:30-10:00	Opening ceremony
	Keynote speech - Qi Lu (Microsoft): Future of the Web and Search
10:00-10:30	Coffee break
10:30-12:10	*Users I (Chair: Nicholas Belkin)*
	Modeling and Analysis of Cross-Session Search Tasks The Economics in Interactive Information Retrieval Seeding Simulated Queries with User-study Data for Personal Search Evaluation Understanding Re-finding Behaviour in Naturalistic Email Interaction Logs
	*Query Analysis I (Chair: Ben Carterette)*
	People Searching for People: Analysis of a People Search Engine Log Learning Search Tasks in Queries and Web Pages via Graph Regularization Dynamics of Focus-of-Attention in Diagnostic Search User Behavior in Zero-Recall eCommerce Queries
	*Learning to Rank (Chair: Tie-Yan Liu)*
	Bagging Gradient-Boosted Trees for High Precision, Low Variance Ranking Models Learning to Rank for Freshness and Relevance A Cascade Ranking Model for Efficient Ranked Retrieval Relevant Knowledge Helps in Choosing Right Teacher: Active Query Selection for Ranking Adaptation
12:10-14:00	Lunch
14:00-15:15	*Personalization (Chair: Maarten de Rijke)*
	SCENE : A Scalable Two-Stage Personalized News Recommendation System Inferring and Using Location Metadata to Personalize Web Search Active Learning to Maximize Accuracy vs. Effort in Interactive Information Retrieval
	*Retrieval models I (Chair: Oren Kurland)*
	CRTER: Using Cross Terms to Enhance Probabilistic Information Retrieval A Boosting Approach to Improving Pseudo-Relevance Feedback Enhancing Ad-hoc Relevance Weighting Using Probability Density Estimation
	*Social Media (Chair: Mounia Lalmas)*
	Who Should Share What? Item-level Social Influence Prediction for Users and Posts Ranking Mining Tags Using Social Endorsement Networks Crowdsourcing for Book Search Evaluation: Impact of HIT Design on Comparative System Ranking
15:15-15:45	Coffee break
15:45-17:25	*Content Analysis (Chair: Jamie Callan)*
	A Site Oriented Method For Segmenting Web Pages Composite Hashing with Multiple Information Sources Detecting Outlier Sections in US Congressional Legislation DOM Based Content Extraction via Text Density
	*Web IR (Chair: Ricardo Baeza-Yates)*
	Social Context Summarization Probabilistic Factor Models for Web Site Recommendation Efficiently Collecting Relevance Information from Clickthroughs for Web Retrieval System Evaluation Unsupervised Query Segmentation Using Clickthrough for Information Retrieval
	*Collaborative filtering I (Chair: David Carmel)*
	Collaborative Competitive Filtering: Learning Recommender Using Context of User Choices CLR: A Collaborative Location Recommendation Framework based on Co-Clustering Functional Matrix Factorizations for Cold-Start Recommendation Exploiting Geographical Influence for Collaborative Point-of-Interest Recommendation
18:30-22:00	Poster-Demo reception
	*July 26, 2011 Tuesday*
08:45-10:00	Keynote speech - ChengXiang Zhai (UIUC): Beyond Search: Statistical Topic Models for Text Analysis
10:00-10:30	Coffee break
10:30-12:10	*Users II (Chair: Susan Dumais)*
	Why Searchers Switch: Understanding and Predicting Engine Switching Rationales Find It If You Can: A Game for Modeling Different Types of Web Search Success Using Interaction Data Measuring Improvement in User Search Performance Resulting From Optimal Search Tips ViewSer: Enabling Large-Scale Remote User Studies of Web Search Examination and Interaction
	*Query Analysis II (Chair: Bruce Croft)*
	CrowdLogging: Distributed, Private, and Anonymous Search Logging Out of Sight, Not Out of Mind: On the Effect of Social and Physical Detachment on Information Need Scalable Multi-Dimensional User Intent Identification using Tree Structured Distributions Social Annotation in Query Expansion: a Machine Learning Approach
	*Communities (Chair: Iadh Ounis)*
	Predicting Web Searcher Satisfaction with Existing Community-based Answers Competition-based User Expertise Score Estimation Learning Online Discussion Structures by Conditional Random Fields Mining Topics on Participations for Community Discovery
12:10-14:00	lunch
14:00-15:15	*Classification (Chair: Arjen P. de Vries)*
	Authorship Classification: A Discriminative Syntactic Tree Mining Approach On Theme Location Discovery for Travelogue Services Effective Sentiment Stream Analysis with Self-Augmenting Training and Demand-Driven Projection
	*Retrieval models II (Chair: Donald Metzler)*
	Hypergeometric Language Models for Republished Article Finding Estimation Methods for Ranking Recent Information Query by Document via a Decomposition-Based Two-Level Retrieval Approach
	*Image Search (Chair:Tat-Seng Chua )*
	Integrating Hierarchical Feature Selection and Classifier Training for Multi-Label Image Annotation Efficient Manifold Ranking for Image Retrieval Mining Weakly Labeled Web Facial Images for Search-based Face Annotation
15:15-15:45	Coffee break
15:45-17:25	*Indexing (Chair: Alistair Moffat)*
	Temporal Index Sharding for Space-Time Efficiency in Archive Search Inverted Indexes for Phrases and Strings Faster Temporal Range Queries over Versioned Text Indexing Strategies for Graceful Degradation of Search Quality
	*Web Queries (Chair: Nick Craswell)*
	Incremental Diversification for Very Large Sets: a Streaming-based Approach Intent-Aware Search Result Diversification Parameterized Concept Weighting in Verbose Queries UPS: Efficient Privacy Protection in Personalized Web Search
	*Collaborative filtering II (Chair: Yi Zhang)*
	Handling Data Sparsity in Collaborative Filtering using Emotion and Semantic Based Features Fast Context-aware Recommendations with Factorization Machines Filtering Semi-Structured Documents Based on Faceted Feedback Learning Relevance from Heterogeneous Social Network and Its Application in Online Targeting
18:30-22:00	Banquet
	*July 27, 2011 Wednesday*
08:30-09:45	*Latent Semantic Analysis (Chair: Fernando Diaz)*
	ILDA: Interdependent LDA Model for Learning Latent Aspects and their Ratings from Online Product Reviews Clickthrough-Based Latent Semantic Models for Web Search Regularized Latent Semantic Indexing
	*Multimedia IR (Chair: Lei Zhang)*
	Multimedia Answering: Enriching Text QA with Media Information Enhancing Multi-Label Music Genre Classification Through Ensemble Techniques PICASSO - To Sing, You Must Close Your Eyes and Draw
	*Summarization (Chair: Chin-Yew Lin)*
	Enhanced Results for Web Search Summarizing the Differences in Multilingual News Evolutionary Timeline Summarization: A Balanced Optimization Framework via Iterative Substitution
09:45-10:00	Coffee break
10:00-11:40	*Vertical & Entity Search (Chair: Charles Clarke)*
	Ranking Related News Predictions Collective Entity Linking in Web Text: A Graph-Based Method From One Tree to a Forest: a Unified Solution for Structured Web Data Extraction Improving Local Search Ranking through External Logs
	*Query suggestions (Chair: Yoelle Maarek)*
	Query Suggestions in the Absence of Query Logs Synthesizing High Utility Suggestions for Rare Web Search Queries Post-Ranking Query Suggestion by Diversifying Search Results Automatic Boolean Query Suggestion for Professional Search
	*Linguistic Analysis (Chair: Noriko Kando)*
	Improved Video Categorization from Text Metadata and User Comments Multifaceted Toponym Recognition for Streaming News Enriching Document Representation via Translation for Improved Monolingual Information Retrieval A Novel Corpus-Based Stemming Algorithm using Co-occurrence Statistics
11:45-14:00	SIGIR Business Meeting (Lunch box provided)
14:00-15:15	*Clustering (Chair: Andrew Trotman)*
	Document Clustering with Universum Identifying Points of Interest by Self-Tuning Clustering Cluster-Based Fusion of Retrieved Lists
	*Effectiveness (Chair: Mark Sanderson)*
	System Effectiveness, User Models, and User Utility: A Conceptual Framework for Investigation Evaluating the Synergic Effect of Collaboration in Information Seeking Repeatable and Reliable Search System Evaluation using Crowdsourcing
	*Multilingual IR (Chair: Doug Oard)*
	Cross-Language Web Page Classification via Dual Knowledge Transfer Using Nonnegative Matrix Tri-Factorization No Free Lunch: Brute Force vs. Locality-Sensitive Hashing for Cross-lingual Pairwise Similarity An Event-centric Model for Multilingual Document Similarity
15:15-15:30	Coffee break
15:30-17:10	*Efficiency (Chair: Justin Zobel)*
	Posting List Intersection on Multicore Architectures Timestamp-based Result Cache Invalidation for Web Search Engines Energy-Price-Driven Query Processing in Multi-center Web Search Engines Faster Top-k Document Retrieval Using Block-Max Indexes
	*Recommender systems (Chair: Luo Si)*
	Utilizing Marginal Net Utility for Recommendation in E-commerce Recommending Ephemeral Items at Web Scale A Unified Framework for Recommendations Based on Quaternary Semantic Analysis Associative Tag Recommendation Exploiting Multiple Textual Features
	*Test collections (Chair: Ian Soboroff)*
	Evaluating Diversified Search Results Using Per-intent Graded Relevance Evaluating Multi-Query Sessions Quantifying Test Collection Quality Based on the Consistency of Relevance Judgements Pseudo Test Collections for Learning Web Search Ranking Functions
17:10-17:30	Closing session

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