2021

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Pseudo relevance feedback optimization
Avi Arampatzis | Georgios Peikos | Symeon Symeonidis
2021 Volume 24 Issue 4-5

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Transfer Learning for Automated Responses to the BDI Questionnaire
Christoforos Spartalis | George Drosatos | Avi Arampatzis
Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021

2020

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Report on CLEF 2020
Avi Arampatzis | Linda Cappellato | Carsten Eickhoff | Nicola Ferro | Hideo Joho | Evangelos Kanoulas | Christina Lioma | Aurélie Névéol | Theodora Tsikrika | Stefanos Vrochidis
2020 Volume 54 Issue 2

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DUTh at TREC 2020 Conversational Assistance Track
Michalis Fotiadis | Georgios Peikos | Symeon Symeonidis | Avi Arampatzis
Proceedings of the Twenty-Ninth Text REtrieval Conference, TREC 2020, Virtual Event [Gaithersburg, Maryland, USA], November 16-20, 2020

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Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings

Experimental IR Meets Multilinguality, Multimodality, and Interaction - 11th International Conference of the CLEF Association, CLEF 2020, Thessaloniki, Greece, September 22-25, 2020, Proceedings

2019

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Language models and fusion for authorship attribution
Olga Fourkioti | Symeon Symeonidis | Avi Arampatzis
2019 Volume 56 Issue 6

2018

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Suggesting Points-of-Interest via Content-Based, Collaborative, and Hybrid Fusion Methods in Mobile Devices
Avi Arampatzis | Georgios Kalamatianos
2018 Volume 36 Issue 3

2016

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Recommending Points-of-Interest via Weighted kNN, Rated Rocchio, and Borda Count Fusion
Georgios Kalamatianos | Avi Arampatzis
Proceedings of The Twenty-Fifth Text REtrieval Conference, TREC 2016, Gaithersburg, Maryland, USA, November 15-18, 2016

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Augmenting Medical Queries with UMLS Concepts via MetaMap
Christopher Agrafiotes | Avi Arampatzis
Proceedings of The Twenty-Fifth Text REtrieval Conference, TREC 2016, Gaithersburg, Maryland, USA, November 15-18, 2016

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DUTh at the ImageCLEF 2016 Image Annotation Task: Content Selection
Georgios Barlas | Maria Ntonti | Avi Arampatzis
Working Notes of CLEF 2016 - Conference and Labs of the Evaluation forum, Évora, Portugal, 5-8 September, 2016

2015

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Versatile Query Scrambling for Private Web Search
Avi Arampatzis | George Drosatos | Pavlos S. Efraimidis
2015 Volume 18 Issue 4

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DUTH at TREC 2015 Clinical Decision Support Track
George Drosatos | Stefanos Roumeliotis | Eleni Kaldoudi | Avi Arampatzis
Proceedings of The Twenty-Fourth Text REtrieval Conference, TREC 2015, Gaithersburg, Maryland, USA, November 17-20, 2015

2013

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A query scrambler for search privacy on the internet
Avi Arampatzis | Pavlos S. Efraimidis | George Drosatos
2013 Volume 16 Issue 6

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Dynamic two-stage image retrieval from large multimedia databases
Avi Arampatzis | Konstantinos Zagoris | Savvas A. Chatzichristofis
2013 Volume 49 Issue 1

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DUTH at TREC 2013 Contextual Suggestion Track
George Drosatos | Giorgos Stamatelatos | Avi Arampatzis | Pavlos S. Efraimidis
Proceedings of The Twenty-Second Text REtrieval Conference, TREC 2013, Gaithersburg, Maryland, USA, November 19-22, 2013

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On CORI Results Merging
Ilya Markov | Avi Arampatzis | Fabio Crestani
Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings

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A Versatile Tool for Privacy-Enhanced Web Search
Avi Arampatzis | George Drosatos | Pavlos S. Efraimidis
Advances in Information Retrieval - 35th European Conference on IR Research, ECIR 2013, Moscow, Russia, March 24-27, 2013. Proceedings

2012

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Unsupervised linear score normalization revisited
Ilya Markov | Avi Arampatzis | Fabio Crestani
The 35th International ACM SIGIR conference on research and development in Information Retrieval, SIGIR '12, Portland, OR, USA, August 12-16, 2012

2011

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Modeling score distributions in information retrieval
Avi Arampatzis | Stephen Robertson
2011 Volume 14 Issue 1

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DUTH at ImageCLEF 2011 Wikipedia Retrieval
Avi Arampatzis | Konstantinos Zagoris | Savvas A. Chatzichristofis
CLEF 2011 Labs and Workshop, Notebook Papers, 19-22 September 2011, Amsterdam, The Netherlands

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The TREC files: the (ground) truth is out there
Savvas A. Chatzichristofis | Konstantinos Zagoris | Avi Arampatzis
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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Bag-of-visual-words vs global image descriptors on two-stage multimodal retrieval
Savvas A. Chatzichristofis | Konstantinos Zagoris | Avi Arampatzis
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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Fusion vs. Two-Stage for Multimodal Retrieval
Avi Arampatzis | Konstantinos Zagoris | Savvas A. Chatzichristofis
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

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Dynamic Two-Stage Image Retrieval from Large Multimodal Databases
Avi Arampatzis | Konstantinos Zagoris | Savvas A. Chatzichristofis
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

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Enhancing Deniability against Query-Logs
Avi Arampatzis | Pavlos S. Efraimidis | George Drosatos
Advances in Information Retrieval - 33rd European Conference on IR Research, ECIR 2011, Dublin, Ireland, April 18-21, 2011. Proceedings

2010

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Multimedia Search with Noisy Modalities: Fusion and Multistage Retrieval
Avi Arampatzis | Savvas A. Chatzichristofis | Konstantinos Zagoris
CLEF 2010 LABs and Workshops, Notebook Papers, 22-23 September 2010, Padua, Italy

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DUTH Does Probabilities of Relevance at the Legal Track
Dim P. Papadopoulos | Vicky S. Kalogeiton | Avi Arampatzis
Proceedings of The Nineteenth Text REtrieval Conference, TREC 2010, Gaithersburg, Maryland, USA, November 16-19, 2010

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Late fusion of compact composite descriptorsfor retrieval from heterogeneous image databases
Savvas A. Chatzichristofis | Avi Arampatzis
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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An Empirical Study of Query Specificity
Avi Arampatzis | Jaap Kamps
Advances in Information Retrieval, 32nd European Conference on IR Research, ECIR 2010, Milton Keynes, UK, March 28-31, 2010. Proceedings

2009

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Score Distributions in Information Retrieval
Avi Arampatzis | Stephen Robertson | Jaap Kamps
Advances in Information Retrieval Theory, Second International Conference on the Theory of Information Retrieval, ICTIR 2009, Cambridge, UK, September 10-12, 2009, Proceedings

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Where to stop reading a ranked list?: threshold optimization using truncated score distributions
Avi Arampatzis | Jaap Kamps | Stephen Robertson
Proceedings of the 32nd Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2009, Boston, MA, USA, July 19-23, 2009

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A signal-to-noise approach to score normalization
Avi Arampatzis | Jaap Kamps
Proceedings of the 18th ACM Conference on Information and Knowledge Management, CIKM 2009, Hong Kong, China, November 2-6, 2009

2008

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Where to Stop Reading a Ranked List?
Avi Arampatzis | Jaap Kamps
Proceedings of The Seventeenth Text REtrieval Conference, TREC 2008, Gaithersburg, Maryland, USA, November 18-21, 2008

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A study of query length
Avi Arampatzis | Jaap Kamps
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, SIGIR 2008, Singapore, July 20-24, 2008

2007

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Access to Legal Documents: Exact Match, Best Match, and Combinations
Avi Arampatzis | Jaap Kamps | Martijn Kooken | Nir Nussbaum
Proceedings of The Sixteenth Text REtrieval Conference, TREC 2007, Gaithersburg, Maryland, USA, November 5-9, 2007

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Unified Access to Heterogeneous Data in Cultural Heritage
Marijn Koolen | Avi Arampatzis | Jaap Kamps | Vincent de Keijzer | Nir Nussbaum
Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 2007, 8th International Conference, Carnegie Mellon University, Pittsburgh, PA, USA, May 30 - June 1, 2007. Proceedings, CD-ROM

2001

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Unbiased S-D Threshold Optimization, Initial Query Degradation, Decay, and Incrementality, for Adaptive Document Filtering
Avi Arampatzis
Proceedings of The Tenth Text REtrieval Conference, TREC 2001, Gaithersburg, Maryland, USA, November 13-16, 2001

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The Score-Distributional Threshold Optimization for Adaptive Binary Classification Tasks
Avi Arampatzis | André van Hameren
SIGIR 2001: Proceedings of the 24th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, September 9-13, 2001, New Orleans, Louisiana, USA

2000

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Incrementality, Half-life, and Threshold Optimization for Adaptive Document Filtering
Avi Arampatzis | Jean Beney | Cornelis H. A. Koster | Theo P. van der Weide
Proceedings of The Ninth Text REtrieval Conference, TREC 2000, Gaithersburg, Maryland, USA, November 13-16, 2000

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Term Weighting for Filtering based on Distribution of Terms over Time
Avi Arampatzis | Theo P. van der Weide | Cornelis H. A. Koster | Patrick van Bommel
Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 2000, 6th International Conference, College de France, France, April 12-14, 2000. Proceedings

1998

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Phase-Based Information Retrieval
Avi Arampatzis | T. Tsoris | Cornelis H. A. Koster | Theo P. van der Weide
1998 Volume 34 Issue 6

1997

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IRENA: Information Retrieval Engine based on Natural Language Analysis
Avi Arampatzis | T. Tsoris | Cornelis H. A. Koster
Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications) - RIAO 1997, 5th International Conference, McGill University, Montreal, Canada, June 25-27, 1997. Proceedings

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