Ari Pirkola

2016

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The twist measure for IR evaluation: Taking user's effort into account.
Nicola Ferro|Gianmaria Silvello|Heikki Keskustalo|Ari Pirkola|Kalervo Järvelin
Journal of the Association for Information Science and Technology (JASIST) 2016 Volume 67 Issue 3

2012

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Cumulated Relative Position: A Metric for Ranking Evaluation.
Marco Angelini|Nicola Ferro|Kalervo Järvelin|Heikki Keskustalo|Ari Pirkola|Giuseppe Santucci|Gianmaria Silvello
Information Access Evaluation. Multilinguality, Multimodality, and Visual Analytics - Third International Conference of the CLEF Initiative, CLEF 2012, Rome, Italy, September 17-20, 2012. Proceedings

2009

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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
Information Retrieval Technology, 5th Asia Information Retrieval Symposium, AIRS 2009, Sapporo, Japan, October 21-23, 2009. Proceedings

2008

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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
Discover Computing 2008 Volume 11 Issue 3
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Focused web crawling in the acquisition of comparable corpora.
Tuomas Talvensaari|Ari Pirkola|Kalervo Järvelin|Martti Juhola|Jorma Laurikkala
Discover Computing 2008 Volume 11 Issue 5
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A Novel Implementation of the FITE-TRT Translation Method.
Aki Loponen|Ari Pirkola|Kalervo Järvelin|Heikki Keskustalo
Advances in Information Retrieval , 30th European Conference on IR Research, ECIR 2008, Glasgow, UK, March 30-April 3, 2008. Proceedings
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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, SIGIR 2008, Singapore, July 20-24, 2008

2007

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Frequency-based identification of correct translation equivalents (FITE) obtained through transformation rules.
Ari Pirkola|Jarmo Toivonen|Heikki Keskustalo|Kalervo Järvelin
ACM Transactions on Information Systems (TOIS) 2007 Volume 26 Issue 1

2006

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The Effects of Relevance Feedback Quality and Quantity in Interactive Relevance Feedback: A Simulation Based on User Modeling.
Heikki Keskustalo|Kalervo Järvelin|Ari Pirkola
Advances in Information Retrieval, 28th European Conference on IR Research, ECIR 2006, London, UK, April 10-12, 2006, Proceedings

2005

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Translating cross-lingual spelling variants using transformation rules.
Jarmo Toivonen|Ari Pirkola|Heikki Keskustalo|Kari Visala|Kalervo Järvelin
Information Processing and Management 2005 Volume 41 Issue 4
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TREC 2005 Genomics Track Experiments at UTA.
Ari Pirkola
Proceedings of the Fourteenth Text REtrieval Conference, TREC 2005, Gaithersburg, Maryland, USA, November 15-18, 2005

2004

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Dictionary-Based Cross-Language Information Retrieval: Learning Experiences from CLEF 2000-2002.
Turid Hedlund|Eija Airio|Heikki Keskustalo|Raija Lehtokangas|Ari Pirkola|Kalervo Järvelin
Discover Computing 2004 Volume 7 Issue 1-2
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TREC 2004 Genomics Track Experiments at UTA: The Effects of Primary Keys, Bigram Phrases and Query Expansion on Retrieval Performance.
Ari Pirkola
Proceedings of the Thirteenth Text REtrieval Conference, TREC 2004, Gaithersburg, Maryland, USA, November 16-19, 2004

2003

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Applying query structuring in cross-language retrieval.
Ari Pirkola|Deniz Puolamäki|Kalervo Järvelin
Information Processing and Management 2003 Volume 39 Issue 3
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The Impact of Word Normalization Methods and Merging Strategies on Multilingual IR.
Eija Airio|Heikki Keskustalo|Turid Hedlund|Ari Pirkola
Comparative Evaluation of Multilingual Information Access Systems, 4th Workshop of the Cross-Language Evaluation Forum, CLEF 2003, Trondheim, Norway, August 21-22, 2003, Revised Selected Papers
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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
Working Notes for CLEF 2003 Workshop co-located with the 7th European Conference on Digital Libraries (ECDL 2003), Trondheim, Norway, August 21-22, 2003.
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Fuzzy translation of cross-lingual spelling variants.
Ari Pirkola|Jarmo Toivonen|Heikki Keskustalo|Kari Visala|Kalervo Järvelin
SIGIR 2003: Proceedings of the 26th Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, July 28 - August 1, 2003, Toronto, Canada
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Non-adjacent Digrams Improve Matching of Cross-Lingual Spelling Variants.
Heikki Keskustalo|Ari Pirkola|Kari Visala|Erkka Leppänen|Kalervo Järvelin
String Processing and Information Retrieval, 10th International Symposium, SPIRE 2003, Manaus, Brazil, October 8-10, 2003, Proceedings
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TREC 2003 Genomics Track Experiments at UTA: Query Expansion with Predefinded High Frequency Terms.
Ari Pirkola|Erkka Leppänen
Proceedings of The Twelfth Text REtrieval Conference, TREC 2003, Gaithersburg, Maryland, USA, November 18-21, 2003

2002

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Bilingual and Multilingual Runs with a Unified Process.
Eija Airio|Heikki Keskustalo|Turid Hedlund|Ari Pirkola
Advances in Cross-Language Information Retrieval, Third Workshop of the Cross-Language Evaluation Forum, CLEF 2002. Rome, Italy, September 19-20, 2002. Revised Papers
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UTACLIR @ CLEF 2002: Towards a Unified Translation Process Model.
Eija Airio|Heikki Keskustalo|Turid Hedlund|Ari Pirkola
Working Notes for CLEF 2002 Workshop co-located with the 6th European Conference on Digital Libraries (ECDL 2002), Rome, Italy, September 19-20, 2002.

2001

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Aspects of Swedish morphology and semantics from the perspective of mono- and cross-language information retrieval.
Turid Hedlund|Ari Pirkola|Kalervo Järvelin
Information Processing and Management 2001 Volume 37 Issue 1
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Dictionary-Based Cross-Language Information Retrieval: Problems, Methods, and Research Findings.
Ari Pirkola|Turid Hedlund|Heikki Keskustalo|Kalervo Järvelin
Discover Computing 2001 Volume 4 Issue 3-4
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Employing the resolution power of search keys.
Ari Pirkola|Kalervo Järvelin
Journal of the Association for Information Science and Technology (JASIST) 2001 Volume 52 Issue 7
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Utaclir @ CLEF 2001 - Effects of Compound Splitting and N-Gram Techniques.
Turid Hedlund|Heikki Keskustalo|Ari Pirkola|Eija Airio|Kalervo Järvelin
Evaluation of Cross-Language Information Retrieval Systems, Second Workshop of the Cross-Language Evaluation Forum, CLEF 2001, Darmstadt, Germany, September 3-4, 2001, Revised Papers
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UTACLIR @ CLEF 2001: New Features for Handling Compound Words and Untranslatable Proper Names.
Turid Hedlund|Heikki Keskustalo|Ari Pirkola|Eija Airio|Kalervo Järvelin
Working Notes for CLEF 2001 Workshop co-located with the 5th European Conference on Digital Libraries (ECDL 2001), Darmstadt, Germany, September 3-4, 2001.

2000

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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
Cross-Language Information Retrieval and Evaluation, Workshop of Cross-Language Evaluation Forum, CLEF 2000, Lisbon, Portugal, September 21-22, 2000, Revised Papers
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Bilingual Tests with Swedish, Finnish and German Queries.
Turid Hedlund|Heikki Keskustalo|Ari Pirkola|Mikko Sepponen|Kalervo Järvelin
Working Notes for CLEF 2000 Workshop co-located with the 4th European Conference on Digital Libraries (ECDL 2000), Lisbon, Portugal, September 21-22, 2000.

1999

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The Effects of Conjunction, Facet Structure, and Dictionary Combinations in Concept-Based Cross-Language Retrieval.
Ari Pirkola|Heikki Keskustalo|Kalervo Järvelin
Discover Computing 1999 Volume 1 Issue 3

1998

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The Effects of Query Structure and Dictionary Setups in Dictionary-Based Cross-Language Information Retrieval.
Ari Pirkola
SIGIR '98: Proceedings of the 21st Annual International ACM SIGIR Conference on Research and Development in Information Retrieval, August 24-28 1998, Melbourne, Australia

1996

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The Effect of Anaphor and Ellipsis Resolution on Proximity Searching in a Text Database.
Ari Pirkola|Kalervo Järvelin
Information Processing and Management 1996 Volume 32 Issue 2