The Effect of Anaphor and Ellipsis Resolution on Proximity Searching in a Text Database. - Ari Pirkola; Kalervo Järvelin (Inf. Process. Manag., 1996)

The Effects of Query Structure and Dictionary Setups in Dictionary-Based Cross-Language Information Retrieval. - Ari Pirkola (SIGIR, 1998)

The Effects of Conjunction, Facet Structure, and Dictionary Combinations in Concept-Based Cross-Language Retrieval. - Ari Pirkola; Heikki Keskustalo; Kalervo Järvelin (Inf. Retr., 1999)

Studies on linguistic problems and methods in text retrieval: the effects of anaphor and ellipsis resolution in proximity searching, and translation and query structuring methods in cross-language retrieval. - Ari Pirkola (1999)

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 (CLEF, 2000)

Bilingual Tests with Swedish, Finnish and German Queries. - Turid Hedlund; Heikki Keskustalo; Ari Pirkola; Mikko Sepponen; Kalervo Järvelin (CLEF (Working Notes), 2000)

Utaclir @ CLEF 2001 - Effects of Compound Splitting and N-Gram Techniques. - Turid Hedlund; Heikki Keskustalo; Ari Pirkola; Eija Airio; Kalervo Järvelin (CLEF, 2001)

UTACLIR @ CLEF 2001: New Features for Handling Compound Words and Untranslatable Proper Names. - Turid Hedlund; Heikki Keskustalo; Ari Pirkola; Eija Airio; Kalervo Järvelin (CLEF (Working Notes), 2001)

Aspects of Swedish morphology and semantics from the perspective of mono- and cross-language information retrieval. - Turid Hedlund; Ari Pirkola; Kalervo Järvelin (Inf. Process. Manag., 2001)

Dictionary-Based Cross-Language Information Retrieval: Problems, Methods, and Research Findings. - Ari Pirkola; Turid Hedlund; Heikki Keskustalo; Kalervo Järvelin (Inf. Retr., 2001)

Employing the resolution power of search keys. - Ari Pirkola; Kalervo Järvelin (J. Assoc. Inf. Sci. Technol., 2001)

Morphological typology of languages for IR. - Ari Pirkola (J. Documentation, 2001)

Bilingual and Multilingual Runs with a Unified Process. - Eija Airio; Heikki Keskustalo; Turid Hedlund; Ari Pirkola (CLEF, 2002)

UTACLIR @ CLEF 2002: Towards a Unified Translation Process Model. - Eija Airio; Heikki Keskustalo; Turid Hedlund; Ari Pirkola (CLEF (Working Notes), 2002)

CLIR Research at the University of Tampere: issue Editorial. - Ari Pirkola (Inf. Res., 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)

The RATF formula (Kwok's formula): exploiting average term frequency in cross-language retrieval. - Ari Pirkola; Erkka Leppänen; Kalervo Järvelin (Inf. Res., 2002)

The Impact of Word Normalization Methods and Merging Strategies on Multilingual IR. - Eija Airio; Heikki Keskustalo; Turid Hedlund; Ari Pirkola (CLEF, 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 (CLEF (Working Notes), 2003)

Fuzzy translation of cross-lingual spelling variants. - Ari Pirkola; Jarmo Toivonen; Heikki Keskustalo; Kari Visala; Kalervo Järvelin (SIGIR, 2003)

Non-adjacent Digrams Improve Matching of Cross-Lingual Spelling Variants. - Heikki Keskustalo; Ari Pirkola; Kari Visala; Erkka Leppänen; Kalervo Järvelin (SPIRE, 2003)

TREC 2003 Genomics Track Experiments at UTA: Query Expansion with Predefinded High Frequency Terms. - Ari Pirkola; Erkka Leppänen (TREC, 2003)

Applying query structuring in cross-language retrieval. - Ari Pirkola; Deniz Puolamäki; Kalervo Järvelin (Inf. Process. Manag., 2003)

TREC 2004 Genomics Track Experiments at UTA: The Effects of Primary Keys, Bigram Phrases and Query Expansion on Retrieval Performance. - Ari Pirkola (TREC, 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)

TREC 2005 Genomics Track Experiments at UTA. - Ari Pirkola (TREC, 2005)

Translating cross-lingual spelling variants using transformation rules. - Jarmo Toivonen; Ari Pirkola; Heikki Keskustalo; Kari Visala; Kalervo Järvelin (Inf. Process. Manag., 2005)

The Effects of Relevance Feedback Quality and Quantity in Interactive Relevance Feedback: A Simulation Based on User Modeling. - Heikki Keskustalo; Kalervo Järvelin; Ari Pirkola (ECIR, 2006)

FITE-TRT: a high quality translation technique for OOV words. - Ari Pirkola; Jarmo Toivonen; Heikki Keskustalo; Kalervo Järvelin (SAC, 2006)

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)

A Novel Implementation of the FITE-TRT Translation Method. - Aki Loponen; Ari Pirkola; Kalervo Järvelin; Heikki Keskustalo (ECIR, 2008)

Intuition-supporting visualization of user's performance based on explicit negative higher-order relevance. - Heikki Keskustalo; Kalervo Järvelin; Ari Pirkola; Jaana Kekäläinen (SIGIR, 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)

Focused web crawling in the acquisition of comparable corpora. - Tuomas Talvensaari; Ari Pirkola; Kalervo Järvelin; Martti Juhola; Jorma Laurikkala (Inf. Retr., 2008)

Extracting variant forms of chemical names for information retrieval. - Ari Pirkola (Inf. Res., 2008)

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 (AIRS, 2009)

Evaluating Global Link Structure of the Web for Focused Crawling in the Genomics and Genetics Domains. - Ari Pirkola; Tuomas Talvensaari (HEALTHINF, 2009)

Effects of Crawling Strategies on the Performance of Focused Web Crawling. - Ari Pirkola; Tuomas Talvensaari (WEBIST, 2009)

The effectiveness of Web search engines to index new sites from different countries. - Ari Pirkola (Inf. Res., 2009)

A Topic-Specific Web Search System Focusing on Quality Pages. - Ari Pirkola; Tuomas Talvensaari (ECDL, 2010)

Addressing the limited scope problem of focused crawling using a result merging approach. - Ari Pirkola; Tuomas Talvensaari (SAC, 2010)

Constructing Topic-specific Search Keyphrase Suggestion Tools for Web Information Retrieval. - Ari Pirkola (ISI, 2011)

Topic-specific Web Searching based on a Real-text Dictionary. - Ari Pirkola (WEBIST, 2012)

Real-Text Dictionary for Topic-Specific Web Searching. - Ari Pirkola (WEBIST (Selected Papers), 2012)

Cumulated Relative Position: A Metric for Ranking Evaluation. - Marco Angelini; Nicola Ferro 001; Kalervo Järvelin; Heikki Keskustalo; Ari Pirkola; Giuseppe Santucci; Gianmaria Silvello (IIR, 2013)

The twist measure for IR evaluation: Taking user's effort into account. - Nicola Ferro 001; Gianmaria Silvello; Heikki Keskustalo; Ari Pirkola; Kalervo Järvelin (J. Assoc. Inf. Sci. Technol., 2016)