15th September
CET 10:30-12:00
Beijing 16:30-18:00
Sydney 18:30-20:00
New York 04:30-06:00
San Francisco 01:30-03:00
Session 1: Ranking
Unbiased Pairwise Learning from Biased Implicit Feedback (full)
Yuta Saito (Tokyo Institute of Technology)
Training Data Optimization for Pairwise Learning to Rank (full)
Hojae Han (Yonsei University), Seung-won Hwang (Yonsei University), Young-In Song, Siyeon Kim (NAVER)
Learning to Rank Entities for Set Expansion from Unstructured Data (full)
Puxuan Yu, Razieh Rahimi, Zhiqi Huang, James Allan (University of Massachusetts, Amherst)
Using Sentiment Analysis for Pseudo-Relevance Feedback in Social Book Search (short)
Amal Htait (University of Strathclyde), Sébastien Fournier (Aix-Marseille University), Patrice Bellot (Aix-Marseille University), Leif Azzopardi (University of Strathclyde), Gabriella Pasi (University of Milan Bicocca)
CET 18:30-20:00
Beijing 00:30-02:00
Sydney 02:30-04:00
New York 12:30-14:00
San Francisco 09:30-11:00
Session 2: Query Models
Cluster-Based Document Retrieval with Multiple Queries (full)
Kfir Bernstein (Technion), Fiana Raiber (Yahoo Research), Oren Kurland (Technion), Shane Culpepper (RMIT University)
Optimizing Hyper-Phrase Queries (full)
Dhruv Gupta (Max Planck Institute for Informatics), Klaus Berberich (Max Planck Institute for Informatics & Saarbruecken University of Applied Sciences (htw saar))
Query Performance Prediction for Multifield Document Retrieval (short)
Haggai Roitman (eBay Research), Yosi Mass (IBM Research), Guy Feigenblat (IBM Research), Roee Shraga (Technion – Israel Institute of Technology)
Search Result Diversification with Guarantee of Topic Proportionality (full)
Sheikh Muhammad Sarwar, Raghavendra Addanki, Ali Montazeralghaem, Soumyabrata Pa, James Allan (University of Massachusetts, Amherst)
16th September
CET 10:15-11:45
Beijing 16:15-17:45
Sydney 18:15-19:45
New York 04:15-05:45
San Francisco 01:15-02:45
Session 3: User Interaction
A Mixed-Method Analysis of Text and Audio Search Interfaces with Varying Task Complexity (full)
Alexandra Vtyurina, Charles L. A. Clarke, Edith Law (University of Waterloo), Johanne R. Trippas (The University of Melbourne), Horaţiu Bota (Independent Researcher)
Towards Memorable Information Retrieval (full)
Sihang Qiu, Ujwal Gadiraju, Alessandro Bozzon (Delft University of Technology)
The Effects of Learning Objectives on Searchers’ Perceptions and Behaviors (full)
Kelsey Urgo, Jaime Arguello, Robert Capra (University of North Carolina at Chapel Hill)
Interactive Evaluation of Conversational Agents: Reflections on the Impact of Search Task Design (short)
Mateusz Dubiel, Martin Halvey, Leif Azzopardi, Sylvain Daronnat (University of Strathclyde)
CET 18:30-20:00
Beijing 00:30-02:00
Sydney 02:30-04:00
New York 12:30-14:00
San Francisco 09:30-11:00
Session 4: Recommendation
A Hybrid Conditional Variational Autoencoder Model for Personalised Top-N Recommendation (full)
Yaxiong Wu, Craig Macdonald, Iadh Ounis (University of Glasgow)
Approximate Nearest Neighbor Search and Lightweight Dense Vector Reranking in Multi-Stage Retrieval Architectures (short)
Zhengkai Tu (RSVP.ai), Wei Yang (RSVP.ai & University of Waterloo), Zihang Fu (RSVP.ai), Yuqing Xie (RSVP.ai & University of Waterloo), Luchen Tan, Kun Xiong (RSVP.ai), Ming Li, Jimmy Lin (RSVP.ai & University of Waterloo)
Sentiment Prediction using Attention on User-Specific Rating Distribution (short)
Ting Lin, Aixin Sun (Nanyang Technological University)
A Multistage Ranking Strategy for Personalized Hotel Recommendation with Human Mobility Data (short)
Yiwei Li (Beijing Institute of Technology), Miao Fan, Jizhou Huang (Baidu Inc.), Kan Li (Beijing Institute of Technology)
Leveraging Personalized Sentiment Lexicons for Sentiment Analysis (short)
Dominic Seyler, Jiaming Shen, Jinfeng Xiao, Yiren Wang, ChengXiang Zhai (University of Illinois at Urbana-Champaign)
17th September
CET 09:00-10:15
Beijing 15:00-16:30
Sydney 17:00-18:30
New York 03:00-04:30
San Francisco 00:00-01:30
Session 5: Conversational
Length Adaptive Regularization for Retrieval-based Chatbot Models (full)
Disen Wang, Hui Fang (University of Delaware)
Sanitizing Synthetic Training Data Generation for Question Answering over Knowledge Graphs (full)
Trond Linjordet, Krisztian Balog (University of Stavanger)
Analysing the Effect of Clarifying Questions on Document Ranking in Conversational Search (short)
Antonios Minas Krasakis, Mohammad Aliannejadi, Nikos Voskarides, Evangelos Kanoulas (University of Amsterdam)
Bias in Conversational Search: The Double-Edged Sword of the Personalized Knowledge Graph (short)
Emma J. Gerritse, Faegheh, Arjen P. de Vries (Radboud University)
CET 10:45-12:15
Beijing 16:45-18:15
Sydney 18:45-20:15
New York 04:45-06:15
San Francisco 01:45-03:15
Session 6: Learning to Rank
Taking the Counterfactual Online: Efficient and Unbiased Online Evaluation for Ranking (full)
Harrie Oosterhuis (University of Amsterdam), Maarten de Rijke (University of Amsterdam & Ahold Delhaize)
Permutation Equivariant Document Interaction Network for Neural Learning to Rank (short)
Rama Kumar Pasumarthi, Honglei Zhuang, Xuanhui Wang, Michael Bendersky, Marc Najork (Google Research)
Understanding BERT Ranker Under Distillation (short)
Luyu Gao, Zhuyun Dai, Jamie Callan (Carnegie Mellon University)
Utilizing Axiomatic Perturbations to Guide Neural Ranking Models (short)
Zitong Cheng, Hui Fang (University of Delaware)
Analyzing the Influence of Bigrams on Retrieval Bias and Effectiveness (short)
Abdulaziz AlQatan, Leif Azzopardi, Yashar Moshfeghi (University of Strathclyde)
CET 17:00-18:40
Beijing 23:00-00:40
Sydney 01:00-02:40
New York 11:00-12:40
San Francisco 08:00-09:40
Session 7: Evaluation
Declarative Experimentation in Information Retrieval (full)
Craig Macdonald (University of Glasgow), Nicola Tonellotto (University of Pisa)
Exploiting Stopping Time to Evaluate Accumulated Relevance (full)
Marco Ferrante, Nicola Ferro (University of Padua)
Efficient Test Collection Construction via Active Learning (full)
Md Mustafizur Rahman (The University of Texas at Austin), Mucahid Kutlu (TOBB University of Economics and Technology), Tamer Elsayed (Qatar University), Matthew Lease (The University of Texas at Austin)
Offline evaluation without gain (full)
Charles L.A. Clarke, Alexandra Vtyurina, Mark D. Smucker (University of Waterloo)
