Effective Focused Retrieval by Exploiting Query Context and Document Structure ILLC Dissertation Series DS-2011-06 For further information about ILLC-publications, please contact Institute for Logic, Language and Computation Universiteit van Amsterdam Plantage Muidergracht 24 1018 TV Amsterdam phone: +31-20-525 6051 fax: +31-20-525 5206 e-mail:
[email protected] homepage: http://www.illc.uva.nl/ Effective Focused Retrieval by Exploiting Query Context and Document Structure Academisch Proefschrift ter verkrijging van de graad van doctor aan de Universiteit van Amsterdam op gezag van de Rector Magnificus prof. dr. D.C. van den Boom ten overstaan van een door het college voor promoties ingestelde commissie, in het openbaar te verdedigen in de Agnietenkapel op vrijdag 7 oktober 2011, te 14.00 uur door Anna Maria Kaptein geboren te Heerhugowaard Promotiecommissie Promotor: Prof. dr. J.S. Mackenzie Owen Co-promotor: Dr. ir. J. Kamps Overige Leden: Dr. ir. D. Hiemstra Prof. dr. F.M.G. de Jong Dr. M.J. Marx Prof. dr. M. de Rijke Prof. dr. ir. A.P. de Vries Faculteit der Geesteswetenschappen Universiteit van Amsterdam The investigations were supported by the Nether- lands Organization for Scientific Research (NWO) in the EfFoRT (Effective Focused Retrieval Techniques) project, grant # 612.066.513. SIKS Dissertation Series No. 2011-28 The research reported in this thesis has been carried out under the auspices of SIKS, the Dutch Research School for Information and Knowledge Systems. Copyright c 2011 Rianne Kaptein Cover design by Roel Verhagen-Kaptein Printed and bound by Off Page Published by IR Publications, Amsterdam ISBN: 978-90-814485-7-4 Contents Acknowledgments ix 1 Introduction 1 1.1 Research Objective .