World's Best Scientists 2026 revealed!
Pertti Vakkari

Pertti Vakkari

D-Index & Metrics

Computer Science

D-Index
34
Citations
6419
World Ranking
12013
National Ranking
105

Pertti Vakkari publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where Pertti Vakkari sits on this spectrum.

32–41 publications: 7 scientists 42–51 publications: 22 scientists 52–61 publications: 82 scientists 62–71 publications: 134 scientists 72–81 publications: 249 scientists 82–91 publications: 324 scientists 92–101 publications: 421 scientists 102–111 publications: 420 scientists 112–121 publications: 497 scientists 122–131 publications: 544 scientists 132–141 publications: 555 scientists 142–151 publications: 609 scientists 152–161 publications: 559 scientists 162–171 publications: 534 scientists 172–181 publications: 556 scientists 182–191 publications: 583 scientists 192–201 publications: 519 scientists 202–211 publications: 508 scientists 212–221 publications: 490 scientists 222–231 publications: 437 scientists 232–241 publications: 423 scientists 242–251 publications: 408 scientists 252–261 publications: 377 scientists 262–271 publications: 301 scientists 272–281 publications: 335 scientists 282–291 publications: 320 scientists 292–301 publications: 293 scientists 302–311 publications: 250 scientists 312–321 publications: 238 scientists 322–331 publications: 206 scientists 332–341 publications: 209 scientists 342–351 publications: 208 scientists 352–361 publications: 162 scientists 362–371 publications: 176 scientists 372–381 publications: 127 scientists 382–391 publications: 158 scientists 392–401 publications: 128 scientists 402–411 publications: 104 scientists 412–421 publications: 94 scientists 422–431 publications: 99 scientists 432–441 publications: 83 scientists 442–451 publications: 108 scientists 452–461 publications: 73 scientists 462–471 publications: 77 scientists 472–481 publications: 69 scientists 482–491 publications: 84 scientists 492–501 publications: 62 scientists 502–511 publications: 54 scientists 512–521 publications: 57 scientists 522–531 publications: 51 scientists 532–541 publications: 51 scientists 542–551 publications: 32 scientists 552–561 publications: 38 scientists 562–571 publications: 28 scientists 572–581 publications: 43 scientists 582–591 publications: 33 scientists 592–601 publications: 41 scientists 602–611 publications: 32 scientists 612–621 publications: 28 scientists 622–631 publications: 25 scientists 632–641 publications: 27 scientists 642–651 publications: 17 scientists 652–661 publications: 20 scientists 662–671 publications: 17 scientists 672–681 publications: 15 scientists 682–691 publications: 14 scientists 692–701 publications: 21 scientists 702–711 publications: 13 scientists 712–721 publications: 12 scientists 722–731 publications: 19 scientists 732–741 publications: 14 scientists 742–751 publications: 12 scientists 752–761 publications: 10 scientists 762–771 publications: 10 scientists 772–781 publications: 11 scientists 782–791 publications: 10 scientists 792–801 publications: 11 scientists 802–811 publications: 8 scientists 812–821 publications: 8 scientists 822–831 publications: 7 scientists 832–841 publications: 11 scientists 842–851 publications: 10 scientists 852–861 publications: 5 scientists 862–871 publications: 9 scientists 872–881 publications: 4 scientists 882–891 publications: 6 scientists 892–901 publications: 3 scientists 902–911 publications: 6 scientists 912–921 publications: 3 scientists 922–931 publications: 2 scientists 932–941 publications: 2 scientists 942–951 publications: 2 scientists 952–961 publications: 3 scientists 962–971 publications: 3 scientists 972–981 publications: 3 scientists 982–990 publications: 5 scientists 991+ publications: 100 scientists
32 publications 991+

This scientist: 116 publications — 13th percentile

13% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

Pertti Vakkari D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where Pertti Vakkari sits on this spectrum.

30–31 D-Index: 879 scientists 32–33 D-Index: 983 scientists 34–35 D-Index: 918 scientists 36–37 D-Index: 990 scientists 38–39 D-Index: 968 scientists 40–41 D-Index: 907 scientists 42–43 D-Index: 821 scientists 44–45 D-Index: 763 scientists 46–47 D-Index: 689 scientists 48–49 D-Index: 543 scientists 50–51 D-Index: 543 scientists 52–53 D-Index: 518 scientists 54–55 D-Index: 500 scientists 56–57 D-Index: 458 scientists 58–59 D-Index: 400 scientists 60–61 D-Index: 337 scientists 62–63 D-Index: 308 scientists 64–65 D-Index: 292 scientists 66–67 D-Index: 249 scientists 68–69 D-Index: 213 scientists 70–71 D-Index: 192 scientists 72–73 D-Index: 189 scientists 74–75 D-Index: 165 scientists 76–77 D-Index: 139 scientists 78–79 D-Index: 119 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 113 scientists 84–85 D-Index: 88 scientists 86–87 D-Index: 87 scientists 88–89 D-Index: 75 scientists 90–91 D-Index: 69 scientists 92–93 D-Index: 57 scientists 94–95 D-Index: 46 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 34 scientists 100–101 D-Index: 36 scientists 102–103 D-Index: 27 scientists 104–105 D-Index: 37 scientists 106–107 D-Index: 18 scientists 108–109 D-Index: 31 scientists 110–111 D-Index: 19 scientists 112–113 D-Index: 16 scientists 114–115 D-Index: 12 scientists 116–117 D-Index: 20 scientists 118–119 D-Index: 15 scientists 120–121 D-Index: 5 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 8 scientists 126–127 D-Index: 5 scientists 128–129 D-Index: 7 scientists 130 D-Index: 3 scientists 131+ D-Index: 98 scientists
30 D-Index 131+

This scientist: 34 D-Index — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Overview

Pertti Vakkari is affiliated with Tampere University in Finland and has contributed extensively to research in the fields of Computer Science and Decision Sciences. Their work primarily focuses on Information Systems, with significant involvement in related subfields such as Statistics, Probability and Uncertainty, Artificial Intelligence, Museology, and General Social Sciences.

Their research interests encompass several main topics including scientometrics and bibliometrics research, Information Retrieval and Search Behavior, and expert finding and Q&A systems. Additionally, they have explored advanced text analysis techniques, research data management practices, museums and cultural heritage, as well as computational and text analysis methods.

Vakkari's publication record includes papers in several notable venues, with frequent contributions to:

  • Journal of Documentation
  • Journal of the Association for Information Science and Technology
  • Scientometrics
  • SRELS Journal of Information Management
  • Proceedings of the Association for Information Science and Technology

Notable recent papers authored by Vakkari include:

  • Disciplinary contributions to research topics and methodology in Library and Information Science-Leading to fragmentation?, 2022, Journal of the Association for Information Science and Technology
  • Largest contribution to LIS by external disciplines as measured by the characteristics of research articles, 2022, Scientometrics
  • The association of disciplinary background with the evolution of topics and methods in Library and Information Science research 1995-2015, 2023, Journal of the Association for Information Science and Technology
  • What characterizes LIS as a fragmenting discipline?, 2024, Journal of Documentation

Earlier work includes the paper titled "LIS research across 50 years: content analysis of journal articles," published in 2021 in the Journal of Documentation.

Vakkari frequently collaborates with other researchers. The most common co-authors include Kalervo Järvelin, Yu-Wei Chang, Bo-Xian Huang, and I-Chin Wu.

Best Publications

  • Task-based information searching

    Pertti Vakkari

  • Task complexity, problem structure and information actions: integrating studies on information seeking and retrieval

    Pertti Vakkari

  • A Theory of the Task-based Information Retrieval Process: A Summary and Generalisation of a Longitudinal Study.

    Pertti Vakkari

  • The evolution of library and information science 1965–1985: a content analysis of journal articles

    Kalervo Järvelin;Pertti Vakkari

  • Information seeking in context: a challenging metatheory

    Pertti Vakkari

  • Content Analysis of Research Articles in Library and Information Science.

    Kalervo Jarvelin;Pertti Vakkari

  • Changes in relevance criteria and problem stages in task performance

    Pertti Vakkari;Nanna Hakala

  • Changes of search terms and tactics while writing a research proposal A longitudinal case study

    Pertti Vakkari;Mikko Pennanen;Sami Serola

  • Library and Information Science: Its Content and Scope

    Pertti Vakkari

  • Evolution of library and information science, 1965-2005: Content analysis of journal articles

    Otto Tuomaala;Kalervo Järvelin;Pertti Vakkari

  • Searching as learning

    Pertti Vakkari

  • Information seeking in context : proceedings of an international conference on research in information needs, seeking and use in different contexts 14-16 August, 1996, Tampere, Finland

    Pertti Vakkari;Reijo Savolainen;Brenda Dervin

  • Cognition and changes of search terms and tactics during task performance: a longitudinal case study

    Pertti Vakkari

  • Relevance and contributing information types of searched documents in task performance

    Pertti Vakkari

  • Subject knowledge improves interactive query expansion assisted by a thesaurus

    Anne Sihvonen;Pertti Vakkari

  • Conceptions of Library and Information Science: Historical, Empirical and Theoretical Perspectives

    Pertti Vakkari;Blaise Cronin

  • Growth of theories on information seeking: an analysis of growth of a theoretical research program on the relation between task complexity and information seeking

    Pertti Vakkari

  • Students' conceptual structure, search process, and outcome while preparing a research proposal: a longitudinal case study

    Mikko Pennanen;Pertti Vakkari

  • Perceived influence of the use of electronic information resources on scholarly work and publication productivity

    Pertti Vakkari

  • Changes in Search Tactics and Relevance Judgements when Preparing a Research Proposal A Summary of the Findings of a Longitudinal Study

    Pertti Vakkari

  • The influence of relevance levels on the effectiveness of interactive information retrieval

    Pertti Vakkari;Eero Sormunen

  • Conceptions of library and information science : historical, empirical and theoretical perspectives : proceedings of the international conference held for the celebration of 20th Anniversary of the Department of Information Studies, University of Tampere, Finland, 26-28 August 1991

    Pertti Vakkari;Blaise Cronin;Tampereen yliopisto. Kirjastotieteen ja informatiikan laitos

Frequent Co-Authors

Kalervo Järvelin
Kalervo Järvelin Tampere University
Reijo Savolainen
Reijo Savolainen Tampere University
Benno Stein
Benno Stein Bauhaus University, Weimar
Martin Potthast
Martin Potthast Leipzig University
David Bawden
David Bawden City, University of London
Norbert Fuhr
Norbert Fuhr University of Duisburg-Essen
Blaise Cronin
Blaise Cronin Indiana University
Carol Tenopir
Carol Tenopir University of Tennessee at Knoxville
Ann Blandford
Ann Blandford University College London
Diane Kelly
Diane Kelly University of Tennessee at Knoxville

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