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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Bootstrapping subjectivity detection
Valentin Jijkoun | Maarten de Rijke
Proceeding of the 34th International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2011, Beijing, China, July 25-29, 2011

2008

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Named entity normalization in user generated content
Valentin Jijkoun | Mahboob Alam Khalid | Maarten Marx | Maarten de Rijke
Proceedings of the Second Workshop on Analytics for Noisy Unstructured Text Data, AND 2008, Singapore, July 24, 2008

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Overview of WebCLEF 2008
Valentin Jijkoun | Maarten de Rijke
Evaluating Systems for Multilingual and Multimodal Information Access, 9th Workshop of the Cross-Language Evaluation Forum, CLEF 2008, Aarhus, Denmark, September 17-19, 2008, Revised Selected Papers

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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

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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Overview of WebCLEF 2008 (Draft)
Valentin Jijkoun | Maarten de Rijke
Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , Aarhus, Denmark, September 17-19, 2008

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The Impact of Named Entity Normalization on Information Retrieval for Question Answering
Mahboob Alam Khalid | Valentin Jijkoun | Maarten de Rijke
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings

2007

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WiQA: Evaluating Multi-lingual Focused Access to Wikipedia
Valentin Jijkoun | Maarten de Rijke
Proceedings of the 1st International Workshop on Evaluating Information Access, EVIA 2007, National Center of Sciences, Tokyo, Japan, May 15, 2008

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Using Centrality to Rank Web Snippets
Valentin Jijkoun | Maarten de Rijke
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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Overview of WebCLEF 2007
Valentin Jijkoun | Maarten de Rijke
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'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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Overview of the CLEF 2007 Multilingual Question Answering Track
Danilo Giampiccolo | Pamela Forner | Jesús Herrera | Anselmo Peñas | Christelle Ayache | Corina Forascu | Valentin Jijkoun | Petya Osenova | Paulo Rocha | Bogdan Sacaleanu | Richard F. E. Sutcliffe
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 WebCLEF 2007: Using Centrality to Rank Web Snippets
Valentin Jijkoun | Maarten de Rijke
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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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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Overview of the CLEF 2007 Multilingual Question Answering Track
Danilo Giampiccolo | Pamela Forner | Anselmo Peñas | Christelle Ayache | Dan Cristea | Valentin Jijkoun | Petya Osenova | Paulo Rocha | Bogdan Sacaleanu | Richard F. E. Sutcliffe
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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Overview of WebCLEF 2007
Valentin Jijkoun | Maarten de Rijke
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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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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"More like these": growing entity classes from seeds
Luís Sarmento | Valentin Jijkoun | Maarten de Rijke | Eugénio C. Oliveira
Proceedings of the Sixteenth ACM Conference on Information and Knowledge Management, CIKM 2007, Lisbon, Portugal, November 6-10, 2007

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Electoral search using the VerkiezingsKijker: an experience report
Valentin Jijkoun | Maarten Marx | Maarten de Rijke | Frank van Waveren
Proceedings of the 16th International Conference on World Wide Web, WWW 2007, Banff, Alberta, Canada, May 8-12, 2007

2006

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The University of Amsterdam at WiQA 2006
Sisay Fissaha Adafre | Valentin Jijkoun | Maarten de Rijke
Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), Alicante, Spain, September 20-22, 2006

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The University of Amsterdam at CLEF@QA 2006
Valentin Jijkoun | Joris van Rantwijk | David Ahn | Erik F. Tjong Kim Sang | Maarten de Rijke
Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), Alicante, Spain, September 20-22, 2006

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Overview of the CLEF 2006 Multilingual Question Answering Track
Bernardo Magnini | Danilo Giampiccolo | Pamela Forner | Christelle Ayache | Petya Osenova | Anselmo Peñas | Valentin Jijkoun | Bogdan Sacaleanu | Paulo Rocha | Richard F. E. Sutcliffe
Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), Alicante, Spain, September 20-22, 2006

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Overview of WiQA 2006
Valentin Jijkoun | Maarten de Rijke
Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), Alicante, Spain, September 20-22, 2006

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Link-Based vs. Content-Based Retrieval for Question Answering Using Wikipedia
Sisay Fissaha Adafre | Valentin Jijkoun | Maarten de Rijke
Evaluation of Multilingual and Multi-modal Information Retrieval, 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers

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Quartz: A Question Answering System for Dutch
David Ahn | Valentin Jijkoun | Joris van Rantwijk | Maarten de Rijke | Erik F. Tjong Kim Sang
Evaluation of Multilingual and Multi-modal Information Retrieval, 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers

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Overview of the WiQA Task at CLEF 2006
Valentin Jijkoun | Maarten de Rijke
Evaluation of Multilingual and Multi-modal Information Retrieval, 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers

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Overview of the CLEF 2006 Multilingual Question Answering Track
Bernardo Magnini | Danilo Giampiccolo | Pamela Forner | Christelle Ayache | Valentin Jijkoun | Petya Osenova | Anselmo Peñas | Paulo Rocha | Bogdan Sacaleanu | Richard F. E. Sutcliffe
Evaluation of Multilingual and Multi-modal Information Retrieval, 7th Workshop of the Cross-Language Evaluation Forum, CLEF 2006, Alicante, Spain, September 20-22, 2006, Revised Selected Papers

2005

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The University of Amsterdam at QA@CLEF 2005
David Ahn | Valentin Jijkoun | Karin Müller | Maarten de Rijke | Erik F. Tjong Kim Sang
Working Notes for CLEF 2005 Workshop co-located with the 9th European Conference on Digital Libraries (ECDL 2005), Wien, Austria, September 21-22, 2005

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Towards an Offline XML-Based Strategy for Answering Questions
David Ahn | Valentin Jijkoun | Karin Müller | Maarten de Rijke | Erik F. Tjong Kim Sang
Accessing Multilingual Information Repositories, 6th Workshop of the Cross-Language Evalution Forum, CLEF 2005, Vienna, Austria, 21-23 September, 2005, Revised Selected Papers

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Towards a Multi-Stream Question Answering-As-XML-Retrieval Strategy
David Ahn | Sisay Fissaha Adafre | Valentin Jijkoun | Karin Müller | Maarten de Rijke | Erik F. Tjong Kim Sang
Proceedings of the Fourteenth Text REtrieval Conference, TREC 2005, Gaithersburg, Maryland, USA, November 15-18, 2005

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Retrieving answers from frequently asked questions pages on the web
Valentin Jijkoun | Maarten de Rijke
Proceedings of the 2005 ACM CIKM International Conference on Information and Knowledge Management, Bremen, Germany, October 31 - November 5, 2005

2004

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Making Stone Soup: Evaluating a Recall-Oriented Multi-stream Question Answering System for Dutch
David Ahn | Valentin Jijkoun | Karin Müller | Maarten de Rijke | Stefan Schlobach | Gilad Mishne
Multilingual Information Access for Text, Speech and Images, 5th Workshop of the Cross-Language Evaluation Forum, CLEF 2004, Bath, UK, September 15-17, 2004, Revised Selected Papers

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The University of Amsterdam at QA@CLEF 2004
Valentin Jijkoun | Gilad Mishne | Maarten de Rijke | Stefan Schlobach | David Ahn | Karin Müller
Working Notes for CLEF 2004 Workshop co-located with the 8th European Conference on Digital Libraries (ECDL 2004), Bath, UK, September 15-17, 2004

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Using Wikipedia at the TREC QA Track
David Ahn | Valentin Jijkoun | Gilad Mishne | Karin Müller | Maarten de Rijke | Stefan Schlobach
Proceedings of the Thirteenth Text REtrieval Conference, TREC 2004, Gaithersburg, Maryland, USA, November 16-19, 2004

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Answer Selection in a Multi-stream Open Domain Question Answering System
Valentin Jijkoun | Maarten de Rijke
Advances in Information Retrieval, 26th European Conference on IR Research, ECIR 2004, Sunderland, UK, April 5-7, 2004, Proceedings

2003

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The University of Amsterdam at QA@CLEF2003
Valentin Jijkoun | Gilad Mishne | Maarten de Rijke
Working Notes for CLEF 2003 Workshop co-located with the 7th European Conference on Digital Libraries (ECDL 2003), Trondheim, Norway, August 21-22, 2003

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How Frogs Built the Berlin Wall: A Detailed Error Analysis of a Question Answering System for Dutch
Valentin Jijkoun | Gilad Mishne | Maarten de Rijke
Comparative Evaluation of Multilingual Information Access Systems, 4th Workshop of the Cross-Language Evaluation Forum, CLEF 2003, Trondheim, Norway, August 21-22, 2003, Revised Selected Papers

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The University of Amsterdam at the TREC 2003 Question Answering Track
Valentin Jijkoun | Gilad Mishne | Christof Monz | Maarten de Rijke | Stefan Schlobach | Oren Tsur
Proceedings of The Twelfth Text REtrieval Conference, TREC 2003, Gaithersburg, Maryland, USA, November 18-21, 2003

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