Heikki Keskustalo

According to our database, Heikki Keskustalo authored at least 48 papers between 1996 and 2023.

Collaborative distances:

• Dijkstra number of five.
• Erdős number of four.

2023

Analyzing gender clues in war-time letters.

Heikki Keskustalo, Laura Korkeamäki, Selja Vanamo, Kimmo Kettunen, Sanna Kumpulainen

Digit. Scholarsh. Humanit., April, 2023

Optical character recognition quality affects subjective user perception of historical newspaper clippings.

Kimmo Kettunen, Heikki Keskustalo, Sanna Kumpulainen, Tuula Pääkkönen, Juha Rautiainen

J. Documentation, 2023

2022

Task information types related to data gathering in media studies.

Laura Korkeamäki, Heikki Keskustalo, Sanna Kumpulainen

J. Documentation, 2022

Optical character recognition quality affects perceived usefulness of historical newspaper clippings.

Kimmo Kettunen, Heikki Keskustalo, Sanna Kumpulainen, Tuula Pääkkönen, Juha Rautiainen

CoRR, 2022

OCR Quality Affects Perceived Usefulness of Historical Newspaper Clippings - A User Study.

Kimmo Kettunen, Heikki Keskustalo, Sanna Kumpulainen, Tuula Pääkkönen, Juha Rautiainen

Proceedings of the 18th Italian Research Conference on Digital Libraries, 2022

2020

Historical reasoning in authentic research tasks: Mapping cognitive and document spaces.

Sanna Kumpulainen, Heikki Keskustalo, Boyang Zhang, Kostas Stefanidis

J. Assoc. Inf. Sci. Technol., 2020

2019

The Challenges of Language Variation in Information Access.

Jussi Karlgren, Turid Hedlund, Kalervo Järvelin, Heikki Keskustalo, Kimmo Kettunen

Proceedings of the Information Retrieval Evaluation in a Changing World, 2019

2017

Validating simulated interaction for retrieval evaluation.

Teemu Pääkkönen, Jaana Kekäläinen, Heikki Keskustalo, Leif Azzopardi, David Maxwell, Kalervo Järvelin

Inf. Retr. J., 2017

2016

Information retrieval from historical newspaper collections in highly inflectional languages: A query expansion approach.

Anni Järvelin, Heikki Keskustalo, Eero Sormunen, Miamaria Saastamoinen, Kimmo Kettunen

J. Assoc. Inf. Sci. Technol., 2016

The twist measure for IR evaluation: Taking user's effort into account.

Nicola Ferro, Gianmaria Silvello, Heikki Keskustalo, Ari Pirkola, Kalervo Järvelin

J. Assoc. Inf. Sci. Technol., 2016

2015

Task-Based Information Interaction Evaluation: The Viewpoint of Program Theory.

Kalervo Järvelin, Pertti Vakkari, Paavo Arvola, Feza Baskaya, Anni Järvelin, Jaana Kekäläinen, Heikki Keskustalo, Sanna Kumpulainen, Miamaria Saastamoinen, Reijo Savolainen, Eero Sormunen

ACM Trans. Inf. Syst., 2015

An Initial Investigation into Fixed and Adaptive Stopping Strategies.

David Maxwell, Leif Azzopardi, Kalervo Järvelin, Heikki Keskustalo

Proceedings of the 38th International ACM SIGIR Conference on Research and Development in Information Retrieval, 2015

Exploring Behavioral Dimensions in Session Effectiveness.

Teemu Pääkkönen, Kalervo Järvelin, Jaana Kekäläinen, Heikki Keskustalo, Feza Baskaya, David Maxwell, Leif Azzopardi

Proceedings of the Experimental IR Meets Multilinguality, Multimodality, and Interaction, 2015

Searching and Stopping: An Analysis of Stopping Rules and Strategies.

David Maxwell, Leif Azzopardi, Kalervo Järvelin, Heikki Keskustalo

Proceedings of the 24th ACM International Conference on Information and Knowledge Management, 2015

2013

Effectiveness of search result classification based on relevance feedback.

Feza Baskaya, Heikki Keskustalo, Kalervo Järvelin

J. Inf. Sci., 2013

Cumulated Relative Position: A Metric for Ranking Evaluation.

Marco Angelini, Nicola Ferro, Kalervo Järvelin, Heikki Keskustalo, Ari Pirkola, Giuseppe Santucci, Gianmaria Silvello

Proceedings of the 4th Italian Information Retrieval Workshop, 2013

Modeling behavioral factors ininteractive information retrieval.

Feza Baskaya, Heikki Keskustalo, Kalervo Järvelin

Proceedings of the 22nd ACM International Conference on Information and Knowledge Management, 2013

2012

Time drives interaction: simulating sessions in diverse searching environments.

Feza Baskaya, Heikki Keskustalo, Kalervo Järvelin

Proceedings of the 35th International ACM SIGIR conference on research and development in Information Retrieval, 2012

2011

Simulating Simple and Fallible Relevance Feedback.

Feza Baskaya, Heikki Keskustalo, Kalervo Järvelin

Proceedings of the Advances in Information Retrieval, 2011

2010

Towards simulating and evaluating user interaction in information retrieval using test collections.

Heikki Keskustalo

PhD thesis, 2010

2009

Test Collection-Based IR Evaluation Needs Extension toward Sessions - A Case of Extremely Short Queries.

Heikki Keskustalo, Kalervo Järvelin, Ari Pirkola, Tarun Sharma, Marianne Lykke

Proceedings of the Information Retrieval Technology, 2009

2008

Experiments with transitive dictionary translation and pseudo-relevance feedback using graded relevance assessments.

Raija Lehtokangas, Heikki Keskustalo, Kalervo Järvelin

J. Assoc. Inf. Sci. Technol., 2008

Evaluating the effectiveness of relevance feedback based on a user simulation model: effects of a user scenario on cumulated gain value.

Heikki Keskustalo, Kalervo Järvelin, Ari Pirkola

Inf. Retr., 2008

Intuition-supporting visualization of user's performance based on explicit negative higher-order relevance.

Heikki Keskustalo, Kalervo Järvelin, Ari Pirkola, Jaana Kekäläinen

Proceedings of the 31st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2008

A Novel Implementation of the FITE-TRT Translation Method.

Aki Loponen, Ari Pirkola, Kalervo Järvelin, Heikki Keskustalo

Proceedings of the Advances in Information Retrieval , 2008

2007

Creating and exploiting a comparable corpus in cross-language information retrieval.

Tuomas Talvensaari, Jorma Laurikkala, Kalervo Järvelin, Martti Juhola, Heikki Keskustalo

ACM Trans. Inf. Syst., 2007

Frequency-based identification of correct translation equivalents (FITE) obtained through transformation rules.

Ari Pirkola, Jarmo Toivonen, Heikki Keskustalo, Kalervo Järvelin

ACM Trans. Inf. Syst., 2007

2006

Experiments with dictionary-based CLIR using graded relevance assessments: Improving effectiveness by pseudo-relevance feedback.

Raija Lehtokangas, Heikki Keskustalo, Kalervo Järvelin

Inf. Retr., 2006

FITE-TRT: a high quality translation technique for OOV words.

Ari Pirkola, Jarmo Toivonen, Heikki Keskustalo, Kalervo Järvelin

Proceedings of the 2006 ACM Symposium on Applied Computing (SAC), 2006

The Effects of Relevance Feedback Quality and Quantity in Interactive Relevance Feedback: A Simulation Based on User Modeling.

Heikki Keskustalo, Kalervo Järvelin, Ari Pirkola

Proceedings of the Advances in Information Retrieval, 2006

2005

Translating cross-lingual spelling variants using transformation rules.

Jarmo Toivonen, Ari Pirkola, Heikki Keskustalo, Kari Visala, Kalervo Järvelin

Inf. Process. Manag., 2005

Dictionary-Based CLIR Loses Highly Relevant Documents.

Raija Lehtokangas, Heikki Keskustalo, Kalervo Järvelin

Proceedings of the Advances in Information Retrieval, 2005

2004

Dictionary-Based Cross-Language Information Retrieval: Learning Experiences from CLEF 2000-2002.

Turid Hedlund, Eija Airio, Heikki Keskustalo, Raija Lehtokangas, Ari Pirkola, Kalervo Järvelin

Inf. Retr., 2004

2003

Non-adjacent Digrams Improve Matching of Cross-Lingual Spelling Variants.

Heikki Keskustalo, Ari Pirkola, Kari Visala, Erkka Leppänen, Kalervo Järvelin

Proceedings of the String Processing and Information Retrieval, 2003

Fuzzy translation of cross-lingual spelling variants.

Ari Pirkola, Jarmo Toivonen, Heikki Keskustalo, Kari Visala, Kalervo Järvelin

Proceedings of the SIGIR 2003: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 28, 2003

Multilingual Experiments of UTA at CLEF 2003: The Impact of Different Merging Strategies and Word Normalizing Tools.

Eija Airio, Heikki Keskustalo, Turid Hedlund, Ari Pirkola

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

The Impact of Word Normalization Methods and Merging Strategies on Multilingual IR.

Eija Airio, Heikki Keskustalo, Turid Hedlund, Ari Pirkola

Proceedings of the Comparative Evaluation of Multilingual Information Access Systems, 2003

2002

Targeted s-gram matching: a novel n-gram matching technique for cross- and mono-lingual word form variants.

Ari Pirkola, Heikki Keskustalo, Erkka Leppänen, Antti-Pekka Känsälä, Kalervo Järvelin

Inf. Res., 2002

UTACLIR -: general query translation framework for several language pairs.

Heikki Keskustalo, Turid Hedlund, Eija Airio

Proceedings of the SIGIR 2002: Proceedings of the 25th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 2002

UTACLIR @ CLEF 2002: Towards a Unified Translation Process Model.

Eija Airio, Heikki Keskustalo, Turid Hedlund, Ari Pirkola

Proceedings of the Working Notes for CLEF 2002 Workshop co-located with the 6th European Conference on Digital Libraries (ECDL 2002), 2002

Bilingual and Multilingual Runs with a Unified Process.

Eija Airio, Heikki Keskustalo, Turid Hedlund, Ari Pirkola

Proceedings of the Advances in Cross-Language Information Retrieval, 2002

2001

Dictionary-Based Cross-Language Information Retrieval: Problems, Methods, and Research Findings.

Ari Pirkola, Turid Hedlund, Heikki Keskustalo, Kalervo Järvelin

Inf. Retr., 2001

UTACLIR @ CLEF 2001: New Features for Handling Compound Words and Untranslatable Proper Names.

Turid Hedlund, Heikki Keskustalo, Ari Pirkola, Eija Airio, Kalervo Järvelin

Proceedings of the Working Notes for CLEF 2001 Workshop co-located with the 5th European Conference on Digital Libraries (ECDL 2001), 2001

Utaclir @ CLEF 2001 - Effects of Compound Splitting and N-Gram Techniques.

Turid Hedlund, Heikki Keskustalo, Ari Pirkola, Eija Airio, Kalervo Järvelin

Proceedings of the Evaluation of Cross-Language Information Retrieval Systems, 2001

2000

Bilingual Tests with Swedish, Finnish and German Queries.

Turid Hedlund, Heikki Keskustalo, Ari Pirkola, Mikko Sepponen, Kalervo Järvelin

Proceedings of the Working Notes for CLEF 2000 Workshop co-located with the 4th European Conference on Digital Libraries (ECDL 2000), 2000

Bilingual Tests with Swedish, Finnish, and German Queries: Dealing with Morphology, Compound Words, and Query Structure.

Turid Hedlund, Heikki Keskustalo, Ari Pirkola, Mikko Sepponen, Kalervo Järvelin

Proceedings of the Cross-Language Information Retrieval and Evaluation, 2000

1999

The Effects of Conjunction, Facet Structure, and Dictionary Combinations in Concept-Based Cross-Language Retrieval.

Ari Pirkola, Heikki Keskustalo, Kalervo Järvelin

Inf. Retr., 1999

1996

A Deductive Data Model for Query Expansion.

Kalervo Järvelin, Jaana Kristensen, Timo Niemi, Eero Sormunen, Heikki Keskustalo

Proceedings of the 19th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, 1996