2002

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Microsoft Cambridge at TREC 2002: Filtering Track
Stephen E. Robertson | Steve Walker | Hugo Zaragoza | Ralf Herbrich
Proceedings of The Eleventh Text REtrieval Conference, TREC 2002, Gaithersburg, Maryland, USA, November 19-22, 2002

2001

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TREC-10 Web Track Experiments at MSRA
Jianfeng Gao | Guihong Cao | Hongzhao He | Min Zhang | Jian-Yun Nie | Steve Walker | Stephen E. Robertson
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001

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Microsoft Cambridge at TREC-10: Filtering and Web Tracks
Stephen E. Robertson | Steve Walker | Hugo Zaragoza
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001

2000

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A probabilistic model of information retrieval: development and comparative experiments - Part 2
Karen Sparck Jones | Steve Walker | Stephen E. Robertson
2000 Volume 36 Issue 6

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A probabilistic model of information retrieval: development and comparative experiments - Part 1
Karen Sparck Jones | Steve Walker | Stephen E. Robertson
2000 Volume 36 Issue 6

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Experimentation as a way of life: Okapi at TREC
Stephen E. Robertson | Steve Walker | Micheline Hancock-Beaulieu
2000 Volume 36 Issue 1

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Microsoft Cambridge at TREC-9: Filtering Track
Stephen E. Robertson | Steve Walker
Proceedings of The Ninth Text REtrieval Conference, TREC 2000, Gaithersburg, Maryland, USA, November 13-16, 2000

1999

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Okapi/Keenbow at TREC-8
Stephen E. Robertson | Steve Walker
Proceedings of The Eighth Text REtrieval Conference, TREC 1999, Gaithersburg, Maryland, USA, November 17-19, 1999

1998

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Okapi at TREC-7: Automatic Ad Hoc, Filtering, VLC and Interactive
Stephen E. Robertson | Steve Walker | Micheline Hancock-Beaulieu
Proceedings of The Seventh Text REtrieval Conference, TREC 1998, Gaithersburg, Maryland, USA, November 9-11, 1998

1997

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Okapi at TREC-6 Automatic ad hoc, VLC, routing, filtering and QSDR
Steve Walker | Stephen E. Robertson | Mohand Boughanem | Gareth J. F. Jones | Karen Sparck Jones
Proceedings of The Sixth Text REtrieval Conference, TREC 1997, Gaithersburg, Maryland, USA, November 19-21, 1997

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On Relevance Weights with Little Relevance Information
Stephen E. Robertson | Steve Walker
SIGIR '97: Proceedings of the 20th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 27-31, 1997, Philadelphia, PA, USA

1996

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Okapi at TREC-5
Micheline Hancock-Beaulieu | Mike Gatford | Xiangji Huang | Stephen E. Robertson | Steve Walker | P. W. Williams
Proceedings of The Fifth Text REtrieval Conference, TREC 1996, Gaithersburg, Maryland, USA, November 20-22, 1996

1995

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Large Test Collection Experiments on an Operational, Interactive System: Okapi at TREC
Stephen E. Robertson | Steve Walker | Micheline Hancock-Beaulieu
1995 Volume 31 Issue 3

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Interactive Thesaurus Navigation: Intelligence Rules OK?
Susan Jones | Mike Gatford | Stephen E. Robertson | Micheline Hancock-Beaulieu | Judith Secker | Steve Walker
1995 Volume 46 Issue 1

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Okapi at TREC-4
Stephen E. Robertson | Steve Walker | Micheline Hancock-Beaulieu | Mike Gatford | A. Payne
Proceedings of The Fourth Text REtrieval Conference, TREC 1995, Gaithersburg, Maryland, USA, November 1-3, 1995

1994

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Okapi at TREC-3
Stephen E. Robertson | Steve Walker | Susan Jones | Micheline Hancock-Beaulieu | Mike Gatford
Proceedings of The Third Text REtrieval Conference, TREC 1994, Gaithersburg, Maryland, USA, November 2-4, 1994

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Some Simple Effective Approximations to the 2-Poisson Model for Probabilistic Weighted Retrieval
Stephen E. Robertson | Steve Walker
Proceedings of the 17th Annual International ACM-SIGIR Conference on Research and Development in Information Retrieval. Dublin, Ireland, 3-6 July 1994 (Special Issue of the SIGIR Forum)

1993

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Okapi at TREC-2
Stephen E. Robertson | Steve Walker | Susan Jones | Micheline Hancock-Beaulieu | Mike Gatford
Proceedings of The Second Text REtrieval Conference, TREC 1993, Gaithersburg, Maryland, USA, August 31 - September 2, 1993

1992

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Okapi at TREC
Stephen E. Robertson | Steve Walker | Micheline Hancock-Beaulieu | Aarron Gull | Marianna Lau
Proceedings of The First Text REtrieval Conference, TREC 1992, Gaithersburg, Maryland, USA, November 4-6, 1992

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