2018

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Cross Domain Regularization for Neural Ranking Models using Adversarial Learning
Daniel Cohen | Bhaskar Mitra | Katja Hofmann | W. Bruce Croft
The 41st International ACM SIGIR Conference on Research & Development in Information Retrieval, SIGIR 2018, Ann Arbor, MI, USA, July 08-12, 2018

2016

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Online Evaluation for Information Retrieval
Katja Hofmann | Lihong Li | Filip Radlinski
2016 Volume 10 Issue 1

2015

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Online Learning to Rank: Absolute vs. Relative
Yiwei Chen | Katja Hofmann
Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume

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Predicting Search Satisfaction Metrics with Interleaved Comparisons
Anne Schuth | Katja Hofmann | Filip Radlinski
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, Santiago, Chile, August 9-13, 2015

2014

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On user interactions with query auto-completion
Bhaskar Mitra | Milad Shokouhi | Filip Radlinski | Katja Hofmann
The 37th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR '14, Gold Coast , QLD, Australia - July 06 - 11, 2014

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An Eye-tracking Study of User Interactions with Query Auto Completion
Katja Hofmann | Bhaskar Mitra | Filip Radlinski | Milad Shokouhi
Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, CIKM 2014, Shanghai, China, November 3-7, 2014

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Effects of Position Bias on Click-Based Recommender Evaluation
Katja Hofmann | Anne Schuth | Alejandro Bellogín | Maarten de Rijke
Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings

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Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings

Advances in Information Retrieval - 36th European Conference on IR Research, ECIR 2014, Amsterdam, The Netherlands, April 13-16, 2014. Proceedings

2013

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Fidelity, Soundness, and Efficiency of Interleaved Comparison Methods
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
2013 Volume 31 Issue 4

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Fast and reliable online learning to rank for information retrieval
Katja Hofmann
2013 Volume 47 Issue 2

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Balancing exploration and exploitation in listwise and pairwise online learning to rank for information retrieval
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
2013 Volume 16 Issue 1

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Reusing Historical Interaction Data for Faster Online Learning to Rank for IR
Katja Hofmann | Anne Schuth | Shimon Whiteson | Maarten de Rijke
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, Delft, The Netherlands, April 26th, 2013

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Lerot: an online learning to rank framework
Anne Schuth | Katja Hofmann | Shimon Whiteson | Maarten de Rijke
Proceedings of the 2013 workshop on Living labs for information retrieval evaluation, LivingLab@CIKM 2013, San Francisco, California, USA, November 1, 2013

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Reusing historical interaction data for faster online learning to rank for IR
Katja Hofmann | Anne Schuth | Shimon Whiteson | Maarten de Rijke
Sixth ACM International Conference on Web Search and Data Mining, WSDM 2013, Rome, Italy, February 4-8, 2013

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Evaluating aggregated search using interleaving
Aleksandr Chuklin | Anne Schuth | Katja Hofmann | Pavel Serdyukov | Maarten de Rijke
22nd ACM International Conference on Information and Knowledge Management, CIKM'13, San Francisco, CA, USA, October 27 - November 1, 2013

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Practical Online Retrieval Evaluation
Filip Radlinski | Katja Hofmann
Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings

2012

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Estimating interleaved comparison outcomes from historical click data
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012

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On caption bias in interleaving experiments
Katja Hofmann | Fritz Behr | Filip Radlinski
21st ACM International Conference on Information and Knowledge Management, CIKM'12, Maui, HI, USA, October 29 - November 02, 2012

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Learning to Rank from Relevance Feedback for e-Discovery
Peter Lubell-Doughtie | Katja Hofmann
Advances in Information Retrieval - 34th European Conference on IR Research, ECIR 2012, Barcelona, Spain, April 1-5, 2012. Proceedings

2011

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DIR 2011: the eleventh Dutch-Belgian information retrieval workshop
Corrado Boscarino | Katja Hofmann | Valentin Jijkoun | Edgar Meij | Maarten de Rijke | Wouter Weerkamp
2011 Volume 45 Issue 1

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Adapting Rankers Online
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
Multidisciplinary Information Retrieval - Second Information Retrieval Facility Conference, IRFC 2011, Vienna, Austria, June 6, 2011. Proceedings

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Search engines that learn online
Katja Hofmann
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

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A probabilistic method for inferring preferences from clicks
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
Proceedings of the 20th ACM Conference on Information and Knowledge Management, CIKM 2011, Glasgow, United Kingdom, October 24-28, 2011

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The University of Amsterdam at the TREC 2011 Session Track
Bouke Huurnink | Richard Berendsen | Katja Hofmann | Edgar Meij | Maarten de Rijke
Proceedings of The Twentieth Text REtrieval Conference, TREC 2011, Gaithersburg, Maryland, USA, November 15-18, 2011

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Balancing Exploration and Exploitation in Learning to Rank Online
Katja Hofmann | Shimon Whiteson | Maarten de Rijke
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

2010

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Contextual factors for finding similar experts
Katja Hofmann | Krisztian Balog | Toine Bogers | Maarten de Rijke
2010 Volume 61 Issue 5

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Validating Query Simulators: An Experiment Using Commercial Searches and Purchases
Bouke Huurnink | Katja Hofmann | Maarten de Rijke | Marc Bron
Multilingual and Multimodal Information Access Evaluation, International Conference of the Cross-Language Evaluation Forum, CLEF 2010, Padua, Italy, September 20-23, 2010. Proceedings

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Comparing click-through data to purchase decisions for retrieval evaluation
Katja Hofmann | Bouke Huurnink | Marc Bron | Maarten de Rijke
Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2010, Geneva, Switzerland, July 19-23, 2010

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The University of Amsterdam at TREC 2010: Session, Entity and Relevance Feedback
Marc Bron | Jiyin He | Katja Hofmann | Edgar Meij | Maarten de Rijke | Manos Tsagkias | Wouter Weerkamp
Proceedings of The Nineteenth Text REtrieval Conference, TREC 2010, Gaithersburg, Maryland, USA, November 16-19, 2010

2009

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A Semantic Perspective on Query Log Analysis
Katja Hofmann | Maarten de Rijke | Bouke Huurnink | Edgar Meij
Working Notes for CLEF 2009 Workshop co-located with the 13th European Conference on Digital Libraries (ECDL 2009) , Corfù, Greece, September 30 - October 2, 2009

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The impact of document structure on keyphrase extraction
Katja Hofmann | Manos Tsagkias | Edgar Meij | Maarten de Rijke
Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009

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Heuristic Ranking and Diversification of Web Documents
Jiyin He | Krisztian Balog | Katja Hofmann | Edgar Meij | Maarten de Rijke | Manos Tsagkias | Wouter Weerkamp
Proceedings of The Eighteenth Text REtrieval Conference, TREC 2009, Gaithersburg, Maryland, USA, November 17-20, 2009

2008

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Assessing concept selection for video retrieval
Bouke Huurnink | Katja Hofmann | Maarten de Rijke
Proceedings of the 1st ACM SIGMM International Conference on Multimedia Information Retrieval, MIR 2008, Vancouver, British Columbia, Canada, October 30-31, 2008

2007

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The University of Amsterdam's Question Answering System at QA@CLEF 2007
Valentin Jijkoun | Katja Hofmann | David Ahn | Mahboob Alam Khalid | Joris van Rantwijk | Maarten de Rijke | Erik F. Tjong Kim Sang
Advances in Multilingual and Multimodal Information Retrieval, 8th Workshop of the Cross-Language Evaluation Forum, CLEF 2007, Budapest, Hungary, September 19-21, 2007, Revised Selected Papers

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The University of Amsterdam at CLEF@QA 2007
Valentin Jijkoun | Katja Hofmann | David Ahn | Mahboob Alam Khalid | Joris van Rantwijk | Maarten de Rijke | Erik F. Tjong Kim Sang
Working Notes for CLEF 2007 Workshop co-located with the 11th European Conference on Digital Libraries (ECDL 2007), Budapest, Hungary, September 19-21, 2007

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Automatic extension of non-english wordnets
Katja Hofmann | Erik F. Tjong Kim Sang
SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, Amsterdam, The Netherlands, July 23-27, 2007

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The University of Amsterdam at the TREC 2007 QA Track
Katja Hofmann | Valentin Jijkoun | Mahboob Alam Khalid | Joris van Rantwijk | Erik F. Tjong Kim Sang
Proceedings of The Sixteenth Text REtrieval Conference, TREC 2007, Gaithersburg, Maryland, USA, November 5-9, 2007

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Query and Document Models for Enterprise Search
Krisztian Balog | Katja Hofmann | Wouter Weerkamp | Maarten de Rijke
Proceedings of The Sixteenth Text REtrieval Conference, TREC 2007, Gaithersburg, Maryland, USA, November 5-9, 2007