Djoerd Hiemstra

Orcid: 0000-0003-4967-2900

Affiliations:
  • Radboud University, The Netherlands
  • University of Twente, Enschede, The Netherlands (former)


According to our database1, Djoerd Hiemstra authored at least 202 papers between 1997 and 2024.

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Bibliography

2024
Weighted AUReC: Handling Skew in Shard Map Quality Estimation for Selective Search.
Proceedings of the Advances in Information Retrieval, 2024

The Open Web Index - Crawling and Indexing the Web for Public Use.
Proceedings of the Advances in Information Retrieval, 2024

The First International Workshop on Open Web Search (WOWS).
Proceedings of the Advances in Information Retrieval, 2024

2023
Cross-Market Product-Related Question Answering.
Proceedings of the 46th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2023

Towards a Generic Model for Classifying Software into Correctness Levels and its Application to SQL.
Proceedings of the 5th IEEE/ACM International Workshop on Software Engineering Education for the Next Generation, 2023

UNFair: Search Engine Manipulation, Undetectable by Amortized Inequity.
Proceedings of the 2023 ACM Conference on Fairness, Accountability, and Transparency, 2023

2022
Was Fairness in IR Discussed by Cooper and Robertson in the 1970's?
SIGIR Forum, December, 2022

Guest editorial: special issue on ECIR 2021.
Inf. Retr. J., 2022

2021
Report on the ECIR 2021 discussion panel on open access.
SIGIR Forum, 2021

BERT for Target Apps Selection: Analyzing the Diversity and Performance of BERT in Unified Mobile Search.
CoRR, 2021

Session details: Session 2A - Ranking (2).
Proceedings of the ICTIR '21: The 2021 ACM SIGIR International Conference on the Theory of Information Retrieval, 2021

BERT meets Cranfield: Uncovering the Properties of Full Ranking on Fully Labeled Data.
Proceedings of the 16th Conference of the European Chapter of the Association for Computational Linguistics: Student Research Workshop, 2021

2020
Transitioning the information retrieval literature to a fully open access model.
SIGIR Forum, 2020

Exploring task-based query expansion at the TREC-COVID track.
CoRR, 2020

Reducing Misinformation in Query Autocompletions.
CoRR, 2020

Comparing Rule-based, Feature-based and Deep Neural Methods for De-identification of Dutch Medical Records.
Proceedings of the ACM WSDM 2020 Health Search and Data Mining Workshop, 2020

2019
The influence of network structure and prosocial cultural norms on charitable giving: A multilevel analysis of Movember's fundraising campaigns in 24 countries.
Soc. Networks, 2019

The Recent Applications of Machine Learning in Rail Track Maintenance: A Survey.
Proceedings of the Reliability, Safety, and Security of Railway Systems. Modelling, Analysis, Verification, and Certification, 2019

Predicting Semantic Labels of Text Regions in Heterogeneous Document Images.
Proceedings of the 15th Conference on Natural Language Processing, 2019

2018
Structured Text Retrieval Models.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Probability Smoothing.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

N-Gram Models.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Language Models.
Proceedings of the Encyclopedia of Database Systems, Second Edition, 2018

Recommending Users: Whom to Follow on Federated Social Networks.
CoRR, 2018

2017
Overview of Special Issue.
SIGIR Forum, 2017

Supporting the Exploration of Online Cultural Heritage Collections: The Case of the Dutch Folktale Database.
Digit. Humanit. Q., 2017

Exploring the Query Halo Effect in Site Search: Leading People to Longer Queries.
Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2017

Ranking Learning-to-Rank Methods.
Proceedings of the 1st International Workshop on LEARning Next gEneration Rankers co-located with the 3rd ACM International Conference on the Theory of Information Retrieval (ICTIR 2017), 2017

MTCB: A Multi-Tenant Customizable database Benchmark.
Proceedings of the 9th International Conference on Information Management and Engineering, Barcelona, Spain, October 09, 2017

2016
Evaluation and analysis of term scoring methods for term extraction.
Inf. Retr. J., 2016

Predicting relevance based on assessor disagreement: analysis and practical applications for search evaluation.
Inf. Retr. J., 2016

Resource Selection for Federated Search on the Web.
CoRR, 2016

Beyond Movie Recommendations: Solving the Continuous Cold Start Problem in E-commerceRecommendations.
CoRR, 2016

Efficient web harvesting strategies for monitoring deep web content.
Proceedings of the 18th International Conference on Information Integration and Web-based Applications and Services, 2016

Luhn Revisited: Significant Words Language Models.
Proceedings of the 25th ACM International Conference on Information and Knowledge Management, 2016

#WhoAmI in 160 Characters? Classifying Social Identities Based on Twitter Profile Descriptions.
Proceedings of the First Workshop on NLP and Computational Social Science, 2016

2015
A cross-benchmark comparison of 87 learning to rank methods.
Inf. Process. Manag., 2015

Determine the User Country of a Tweet.
CoRR, 2015

FedWeb Greatest Hits: Presenting the New Test Collection for Federated Web Search.
Proceedings of the 24th International Conference on World Wide Web Companion, 2015

HIA'15: Heterogeneous Information Access Workshop at WSDM 2015.
Proceedings of the Eighth ACM International Conference on Web Search and Data Mining, 2015

Where to Go on Your Next Trip?: Optimizing Travel Destinations Based on User Preferences.
Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2015

Harvesting All Matching Information To A Given Query From a Deep Website.
Proceedings of the 1st International Workshop on Knowledge Discovery on the WEB, 2015

Towards complete coverage in focused web harvesting.
Proceedings of the 17th International Conference on Information Integration and Web-based Applications & Services, 2015

#SupportTheCause: Identifying Motivations to Participate in Online Health Campaigns.
Proceedings of the 2015 Conference on Empirical Methods in Natural Language Processing, 2015

On the Impact of Twitter-based Health Campaigns: A Cross-Country Analysis of Movember.
Proceedings of the Sixth International Workshop on Health Text Mining and Information Analysis, 2015

2014
Integration of scientific and social networks.
World Wide Web, 2014

Analysis of Search and Browsing Behavior of Young Users on the Web.
ACM Trans. Web, 2014

Query recommendation in the information domain of children.
J. Assoc. Inf. Sci. Technol., 2014

Expert group formation using facility location analysis.
Inf. Process. Manag., 2014

Exploiting user disagreement for web search evaluation: an experimental approach.
Proceedings of the Seventh ACM International Conference on Web Search and Data Mining, 2014

Two selfless contributions to web search evaluation.
Proceedings of The Twenty-Third Text REtrieval Conference, 2014

Overview of the TREC 2014 Federated Web Search Track.
Proceedings of The Twenty-Third Text REtrieval Conference, 2014

Linear Co-occurrence Rate Networks (L-CRNs) for Sequence Labeling.
Proceedings of the Statistical Language and Speech Processing, 2014

Designing a General Deep Web Harvester by Harvestability Factor.
Proceedings of the Workshop on Surfacing the Deep and the Social Web co-located with the 13th International Semantic Web Conference (ISWC 2014), 2014

Comparison of local and global undirected graphical models.
Proceedings of the 22th European Symposium on Artificial Neural Networks, 2014

Aligning Vertical Collection Relevance with User Intent.
Proceedings of the 23rd ACM International Conference on Conference on Information and Knowledge Management, 2014

2013
The uncertain representation ranking framework for concept-based video retrieval.
Inf. Retr., 2013

Deep web entity monitoring.
Proceedings of the 22nd International World Wide Web Conference, 2013

Overview of the TREC 2013 Federated Web Search Track.
Proceedings of The Twenty-Second Text REtrieval Conference, 2013

Mirex and Taily at TREC 2013.
Proceedings of The Twenty-Second Text REtrieval Conference, 2013

SearchResultFinder: federated search made easy.
Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval, 2013

Taily: shard selection using the tail of score distributions.
Proceedings of the 36th International ACM SIGIR conference on research and development in Information Retrieval, 2013

UT-DB: An Experimental Study on Sentiment Analysis in Twitter.
Proceedings of the 7th International Workshop on Semantic Evaluation, 2013

An API-based Search System for One Click Access to Information.
Proceedings of the 10th NTCIR Conference on Evaluation of Information Access Technologies, 2013

Vertical selection in the information domain of children.
Proceedings of the 13th ACM/IEEE-CS Joint Conference on Digital Libraries, 2013

Empirical Co-occurrence Rate Networks for Sequence Labeling.
Proceedings of the 12th International Conference on Machine Learning and Applications, 2013

Using a Stack Decoder for Structured Search.
Proceedings of the Flexible Query Answering Systems - 10th International Conference, 2013

From Republicans to Teenagers - Group Membership and Search (GRUMPS).
Proceedings of the Advances in Information Retrieval, 2013

A Joint Classification Method to Integrate Scientific and Social Networks.
Proceedings of the Advances in Information Retrieval, 2013

Snippet-Based Relevance Predictions for Federated Web Search.
Proceedings of the Advances in Information Retrieval, 2013

Size Estimation of Non-Cooperative Data Collections.
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, 2013

Readability of the Web: A study on 1 billion web pages.
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, 2013

Traitor: Associating Concepts using the World Wide Web.
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, 2013

What Snippets Say About Pages.
Proceedings of the 13th Dutch-Belgian Workshop on Information Retrieval, 2013

2012
Peer-to-Peer Information Retrieval: An Overview.
ACM Trans. Inf. Syst., 2012

CLEF 2012: information access evaluation meets multilinguality, multimodality, and visual analytics.
SIGIR Forum, 2012

Simulating the future of concept-based video retrieval under improved detector performance.
Multim. Tools Appl., 2012

Brute Force Information Retrieval Experiments using MapReduce.
ERCIM News, 2012

Ensemble Clustering for Result Diversification.
Proceedings of The Twenty-First Text REtrieval Conference, 2012

An analysis of free-text queries for a multi-field web form.
Proceedings of the Information Interaction in Context: 2012, 2012

EmSe: initial evaluation of a child-friendly medical search system.
Proceedings of the Information Interaction in Context: 2012, 2012

EmSe: Supporting Children's Information Needs within a Hospital Environment.
Proceedings of the Advances in Information Retrieval, 2012

Query recommendation for children.
Proceedings of the 21st ACM International Conference on Information and Knowledge Management, 2012

Federated search in the wild: the combined power of over a hundred search engines.
Proceedings of the 21st ACM International Conference on Information and Knowledge Management, 2012

Shard ranking and cutoff estimation for topically partitioned collections.
Proceedings of the 21st ACM International Conference on Information and Knowledge Management, 2012

What Snippets Say about Pages in Federated Web Search.
Proceedings of the Information Retrieval Technology, 2012

Multi-aspect group formation using facility location analysis.
Proceedings of the Seventeenth Australasian Document Computing Symposium, 2012

2011
Free-Text Search over Complex Web Forms.
Proceedings of the Multidisciplinary Information Retrieval, 2011

Search Result Caching in Peer-to-Peer Information Retrieval Networks.
Proceedings of the Multidisciplinary Information Retrieval, 2011

Free-Text Search versus Complex Web Forms.
Proceedings of the Advances in Information Retrieval, 2011

Visual Exploration of Health Information for Children.
Proceedings of the Advances in Information Retrieval, 2011

2010
Towards accessible search systems.
SIGIR Forum, 2010

Automatic summarisation of discussion fora.
Nat. Lang. Eng., 2010

A database approach to information retrieval: The remarkable relationship between language models and region models
CoRR, 2010

MIREX: MapReduce Information Retrieval Experiments
CoRR, 2010

MapReduce for Experimental Search.
Proceedings of The Nineteenth Text REtrieval Conference, 2010

Query log analysis in the context of information retrieval for children.
Proceedings of the Proceeding of the 33rd International ACM SIGIR Conference on Research and Development in Information Retrieval, 2010

Query-Based Sampling using Snippets.
Proceedings of the 8th Workshop on Large-Scale Distributed Systems for Information Retrieval, 2010

An analysis of queries intended to search information for children.
Proceedings of the Information Interaction in Context Symposium, 2010

How Different Are Language Models andWord Clouds?
Proceedings of the Advances in Information Retrieval, 2010

A Case for Automatic System Evaluation.
Proceedings of the Advances in Information Retrieval, 2010

Query Performance Prediction: Evaluation Contrasted with Effectiveness.
Proceedings of the Advances in Information Retrieval, 2010

Beyond Shot Retrieval: Searching for Broadcast News Items Using Language Models of Concepts.
Proceedings of the Advances in Information Retrieval, 2010

MapReduce for Information Retrieval Evaluation: "Let's Quickly Test This on 12 TB of Data".
Proceedings of the Multilingual and Multimodal Information Access Evaluation, 2010

A cross-lingual framework for monolingual biomedical information retrieval.
Proceedings of the 19th ACM Conference on Information and Knowledge Management, 2010

TeddIR: tangible information retrieval for children.
Proceedings of the Interaction Design and Children, 2010

2009
Structured Text Retrieval Models.
Proceedings of the Encyclopedia of Database Systems, 2009

Probability Smoothing.
Proceedings of the Encyclopedia of Database Systems, 2009

N-Gram Models.
Proceedings of the Encyclopedia of Database Systems, 2009

Language Models.
Proceedings of the Encyclopedia of Database Systems, 2009

Towards Affordable Disclosure of Spoken Heritage Archives.
J. Digit. Inf., 2009

StreetTiVo: Using a P2P XML Database System to Manage Multimedia Data in Your Living Room.
Proceedings of the Advances in Data and Web Management, Joint International Conferences, 2009

University of Twente @ TREC 2009: Indexing Half a Million Web Pages.
Proceedings of The Eighteenth Text REtrieval Conference, 2009

Collection Selection with Highly Discriminative Keys.
Proceedings of the 7th Workshop on Large-Scale Distributed Systems for Information Retrieval, 2009

Concept detectors: how good is good enough?
Proceedings of the 17th International Conference on Multimedia 2009, 2009

Introduction.
Proceedings of the Euro-Par 2009 Parallel Processing, 2009

Information Extraction and Linking in a Retrieval Context.
Proceedings of the Advances in Information Retrieval, 2009

The Combination and Evaluation of Query Performance Prediction Methods.
Proceedings of the Advances in Information Retrieval, 2009

Reusing annotation labor for concept selection.
Proceedings of the 8th ACM International Conference on Image and Video Retrieval, 2009

Relying on topic subsets for system ranking estimation.
Proceedings of the 18th ACM Conference on Information and Knowledge Management, 2009

Information Retrieval Models.
Proceedings of the Information Retrieval: Searching in the 21st Century, 2009

2008
DB&IR integration: report on the Dagstuhl seminar "ranked XML querying".
SIGMOD Rec., 2008

Saving and accessing the old IR literature.
SIGIR Forum, 2008

DB&IR integration: report on the dagstuhl seminar.
SIGIR Forum, 2008

The Lowlands Team at TRECVID 2008.
Proceedings of the TRECVID 2008 workshop participants notebook papers, 2008

University of Twente at the TREC 2008 Enterprise Track: Using the Global Web as an Expertise Evidence Source.
Proceedings of The Seventeenth Text REtrieval Conference, 2008

The Impact of Positive, Negative and Topical Relevance Feedback.
Proceedings of The Seventeenth Text REtrieval Conference, 2008

Modeling expert finding as an absorbing random walk.
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2008

Exploiting sequential dependencies for expert finding.
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2008

Combining document- and paragraph-based entity ranking.
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2008

Using parsimonious language models on web data.
Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2008

The Right Expert at the Right Time and Place.
Proceedings of the Practical Aspects of Knowledge Management, 7th International Conference, 2008

Efficient XML and Entity Retrieval with PF/Tijah: CWI and University of Twente at INEX'08.
Proceedings of the Advances in Focused Retrieval, 2008

Modeling Documents as Mixtures of Persons for Expert Finding.
Proceedings of the Advances in Information Retrieval , 2008

ECIR 2008 Tutorials.
Proceedings of the Advances in Information Retrieval , 2008

Sound ranking algorithms for XML search in PF/Tijah.
Proceedings of the Ranked XML Querying, 09.03. - 14.03.2008, 2008

08111 Report - Ranked XML Querying.
Proceedings of the Ranked XML Querying, 09.03. - 14.03.2008, 2008

On the Evaluation of Snippet Selection for Information Retrieval.
Proceedings of the Working Notes for CLEF 2008 Workshop co-located with the 12th European Conference on Digital Libraries (ECDL 2008) , 2008

On the Evaluation of Snippet Selection for WebCLEF.
Proceedings of the Evaluating Systems for Multilingual and Multimodal Information Access, 2008

WikiTranslate: Query Translation for Cross-Lingual Information Retrieval Using Only Wikipedia.
Proceedings of the Evaluating Systems for Multilingual and Multimodal Information Access, 2008

A probabilistic ranking framework using unobservable binary events for video search.
Proceedings of the 7th ACM International Conference on Image and Video Retrieval, 2008

Modeling multi-step relevance propagation for expert finding.
Proceedings of the 17th ACM Conference on Information and Knowledge Management, 2008

A survey of pre-retrieval query performance predictors.
Proceedings of the 17th ACM Conference on Information and Knowledge Management, 2008

2007
SIGIR's 30th anniversary: an analysis of trends in IR research and the topology of its community.
SIGIR Forum, 2007

The Lowlands team at TRECVID 2007.
Proceedings of the TRECVID 2007 workshop participants notebook papers, 2007

University of Twente at the TREC 2007 Enterprise Track: Modeling Relevance Propagation for the Expert Search Task.
Proceedings of The Sixteenth Text REtrieval Conference, 2007

Parsimonious Language Models for a Terabyte of Text.
Proceedings of The Sixteenth Text REtrieval Conference, 2007

Generative modeling of persons and documents for expert search.
Proceedings of the SIGIR 2007: Proceedings of the 30th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2007

The Effectiveness of Concept Based Search for Video Retrieval.
Proceedings of the LWA 2007: Lernen - Wissen, 2007

Structured Document Retrieval, Multimedia Retrieval, and Entity Ranking Using PF/Tijah.
Proceedings of the Focused Access to XML Documents, 2007

Evaluation of Multimedia Retrieval Systems.
Proceedings of the Multimedia Retrieval, 2007

Searching for Text Documents.
Proceedings of the Multimedia Retrieval, 2007

2006
The TIJAH XML information retrieval system.
Proceedings of the SIGIR 2006: Proceedings of the 29th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2006

Evaluating Structured Information Retrieval and Multimedia Retrieval Using PF/Tijah.
Proceedings of the Comparative Evaluation of XML Information Retrieval Systems, 2006

Using Query Profiles for Clarification.
Proceedings of the Advances in Information Retrieval, 2006

Speech Retrieval Experiments using XML Information Retrieval.
Proceedings of the Working Notes for CLEF 2006 Workshop co-located with the 10th European Conference on Digital Libraries (ECDL 2006), 2006

XML Information Retrieval from Spoken Word Archives.
Proceedings of the Evaluation of Multilingual and Multi-modal Information Retrieval, 2006

The Potential of User Feedback Through the Iterative Refining of Queries in an Image Retrieval System.
Proceedings of the Adaptive Multimedia Retrieval: User, 2006

2005
Editorial.
J. Digit. Inf. Manag., 2005

TIJAH: Embracing IR Methods in XML Databases.
Inf. Retr., 2005

An Integrated Approach to Text and Image Retrieval- The Lowlands Team at Trecvid 2005.
Proceedings of the 2005 TREC Video Retrieval Evaluation, 2005

The Lowlands' TREC Experiments 2005.
Proceedings of the Fourteenth Text REtrieval Conference, 2005

TIJAH Scratches INEX 2005: Vague Element Selection, Image Search, Overlap, and Relevance Feedback.
Proceedings of the Advances in XML Information Retrieval and Evaluation, 2005

Score region algebra: building a transparent XML-R database.
Proceedings of the 2005 ACM CIKM International Conference on Information and Knowledge Management, Bremen, Germany, October 31, 2005

2004
Report on the first Twente Data Management Workshop on XML Databases and Information Retrieval.
SIGMOD Rec., 2004

Probabilistic Approaches to Video Retrieval.
Proceedings of the 2004 TREC Video Retrieval Evaluation, 2004

Conceptual Language Models for Context-Aware Text Retrieval.
Proceedings of the Thirteenth Text REtrieval Conference, 2004

Parsimonious language models for information retrieval.
Proceedings of the SIGIR 2004: Proceedings of the 27th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2004

Monitoring User-System Performance in Interactive Retrieval Tasks.
Proceedings of the Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications), 2004

TIJAH at INEX 2004 Modeling Phrases and Relevance Feedback.
Proceedings of the Advances in XML Information Retrieval, 2004

Interactive Content-Based Retrieval Using Pre-computed Object-Object Similarities.
Proceedings of the Image and Video Retrieval: Third International Conference, 2004

2003
Challenges in information retrieval and language modeling: report of a workshop held at the center for intelligent information retrieval, University of Massachusetts Amherst, September 2002.
SIGIR Forum, 2003

A Probabilistic Multimedia Retrieval Model and Its Evaluation.
EURASIP J. Adv. Signal Process., 2003

Statistical Language Models for Intelligent XML Retrieval.
Proceedings of the Intelligent Search on XML Data, Applications, Languages, Models, 2003

Combining Information Sources for Video Retrieval.
Proceedings of the 2003 TREC Video Retrieval Evaluation, 2003

Bayesian extension to the language model for ad hoc information retrieval.
Proceedings of the SIGIR 2003: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 28, 2003

The TIJAH XML-IR system at INEX 2003.
Proceedings of the INEX 2003 Workshop Proceedings, 2003

Multilingual Retrieval in Twente.
Proceedings of the Working Notes for CLEF 2003 Workshop co-located with the 7th European Conference on Digital Libraries (ECDL 2003), 2003

2002
The Importance of Prior Probabilities for Entry Page Search.
Proceedings of the SIGIR 2002: Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2002

Term-specific smoothing for the language modeling approach to information retrieval: the importance of a query term.
Proceedings of the SIGIR 2002: Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2002

A Database Approach to Content-based XML Retrieval.
Proceedings of the First Workshop of the INitiative for the Evaluation of XML Retrieval (INEX), 2002

Cross-language Retrieval at Twente and TNO.
Proceedings of the Working Notes for CLEF 2002 Workshop co-located with the 6th European Conference on Digital Libraries (ECDL 2002), 2002

Cross-Language Retrieval at the University of Twente and TNO.
Proceedings of the Advances in Cross-Language Information Retrieval, 2002

2001
Using Language Models for Information Retrieval.
PhD thesis, 2001

Retrieving Web Pages Using Content, Links, URLs and Anchors.
Proceedings of The Tenth Text REtrieval Conference, 2001

Relevance Feedback for Best Match Term Weighting Algorithms in Information Retrieval.
Proceedings of the Second DELOS Network of Excellence Workshop on Personalisation and Recommender Systems in Digital Libraries, 2001

Creating a Dutch Information Retrieval Test Corpus.
Proceedings of the Computational Linguistics in the Netherlands 2001, 2001

Predicting the Cost-Quality Trade-Off for Information Retrieval Queries: Facilitating Database Design and Query Optimization.
Proceedings of the 2001 ACM CIKM International Conference on Information and Knowledge Management, 2001

Using language models for information retrieval.
Univ. Twente, ISBN: 978-90-75296-05-1, 2001

2000
A probabilistic justification for using tf x idf term weighting in information retrieval.
Int. J. Digit. Libr., 2000

Language-Based Multimedia Information Retrieval.
Proceedings of the Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications), 2000

Twenty-One at CLEF-2000: Translation Resources, Merging Strategies and Relevance Feedback.
Proceedings of the Working Notes for CLEF 2000 Workshop co-located with the 4th European Conference on Digital Libraries (ECDL 2000), 2000

Translation Resources, Merging Strategies, and Relevance Feedback for Cross-Language Information Retrieval.
Proceedings of the Cross-Language Information Retrieval and Evaluation, 2000

1999
The Mirror DBMS at TREC-8.
Proceedings of The Eighth Text REtrieval Conference, 1999

Twenty-One at TREC-8: using Language Technology for Information Retrieval.
Proceedings of The Eighth Text REtrieval Conference, 1999

Disambiguation Strategies for Cross-Language Information Retrieval.
Proceedings of the Research and Advanced Technology for Digital Libraries, 1999

Extracting Bimodal Representations for Language-Based Image Retrieval.
Proceedings of the Eurographics Multimedia Workshop 1999, 1999

1998
Twenty-One at TREC7: Ad-hoc and Cross-Language Track.
Proceedings of The Seventh Text REtrieval Conference, 1998

A Linguistically Motivated Probabilistic Model of Information Retrieval.
Proceedings of the Research and Advanced Technology for Digital Libraries, 1998

1997
Cross Language Retrieval with the Twenty-One system.
Proceedings of The Sixth Text REtrieval Conference, 1997

The twenty-one demonstrator.
Proceedings of the Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications), 1997

A domain Specific Lexicon Acquisition Tool for Cross-Language Information Retrieval.
Proceedings of the Computer-Assisted Information Retrieval (Recherche d'Information et ses Applications), 1997


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