World's Best Scientists 2026 revealed!
Tetsuya Sakai

Tetsuya Sakai

D-Index & Metrics

Computer Science

D-Index
41
Citations
6003
World Ranking
8934
National Ranking
125

Tetsuya Sakai 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 Tetsuya Sakai 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: 286 publications — 71st percentile

71% of scientists in this discipline score the same or lower.

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

Tetsuya Sakai 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 Tetsuya Sakai 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: 41 D-Index — 40th percentile

40% of scientists in this discipline score the same or lower.

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

Overview

Tetsuya Sakai is affiliated with Waseda University in Japan and has contributed extensively to research in computer science and medicine, with a particular focus on information retrieval and related fields. Their work spans multiple domains including artificial intelligence, information systems, and pulmonary and respiratory medicine.

Their research topics cover a wide range of subjects, including:

  • Topic Modeling
  • Information Retrieval and Search Behavior
  • Natural Language Processing Techniques
  • Expert Finding and Q&A Systems
  • Lung Cancer Treatments and Mutations
  • Multimodal Machine Learning Applications
  • Domain Adaptation and Few-Shot Learning

Sakai's publication record includes papers published in several top venues. Frequent publication outlets include:

  • arXiv (Cornell University)
  • ACM Transactions on Information Systems
  • IEEE Access
  • Journal of Clinical Oncology
  • ACM SIGIR Forum

Some of their recent papers are:

  • "On Fuhr's guideline for IR evaluation" (2020), ACM SIGIR Forum
  • "Retrieval Evaluation Measures that Agree with Users' SERP Preferences" (2020), ACM Transactions on Information Systems
  • "A Versatile Framework for Evaluating Ranked Lists in Terms of Group Fairness and Relevance" (2023), ACM Transactions on Information Systems

Additionally, Sakai is a co-author on interdisciplinary papers such as "Large-scale clinico-genomic profile of non-small cell lung cancer with KRAS G12C: Results from LC-SCRUM-Asia study" (2022) published in Lung Cancer, and "Constructing Better Evaluation Metrics by Incorporating the Anchoring Effect into the User Model" (2022) from the Proceedings of the 45th International ACM SIGIR Conference on Research and Development in Information Retrieval.

They have collaborated frequently with several researchers, including:

  • Yoshitaka Zenke
  • Hiroki Izumi
  • Hibiki Udagawa
  • Kōichi Goto
  • Junjie Wang

Over the course of their career, Tetsuya Sakai has produced a significant body of work reflective of their expertise in multiple intersecting research areas, combining aspects of computer science and medicine. Their contributions engage core themes in information retrieval, machine learning, and clinical studies related to lung cancer.

Best Publications

  • Evaluating evaluation metrics based on the bootstrap

    Tetsuya Sakai

  • Evaluating diversified search results using per-intent graded relevance

    Tetsuya Sakai;Ruihua Song

  • Alternatives to Bpref

    Tetsuya Sakai

  • Proceedings of the 36th international ACM SIGIR conference on Research and development in information retrieval

    Gareth J.F. Jones;Páraic Sheridan;Diane Kelly;Maarten de Rijke

  • Information filtering apparatus for selecting predetermined article from plural articles to present selected article to user, and method therefore

    Kazuo Sumita;Tetsuya Sakai;Masahiro Kajiura;Kenji Ono

  • On the reliability of information retrieval metrics based on graded relevance

    Tetsuya Sakai

  • On information retrieval metrics designed for evaluation with incomplete relevance assessments

    Tetsuya Sakai;Noriko Kando

  • Statistical reform in information retrieval

    Tetsuya Sakai

  • Flexible pseudo-relevance feedback via selective sampling

    Tetsuya Sakai;Toshihiko Manabe;Makoto Koyama

  • Generic summaries for indexing in information retrieval

    Tetsuya Sakai;Karen Sparck-Jones

  • Overview of the NTCIR-9 INTENT Task

    Ruihua Song;Min Zhang;Tetsuya Sakai;Makoto P. Kato

  • Proceedings of the 40th International ACM SIGIR Conference on Research and Development in Information Retrieval

    Noriko Kando;Tetsuya Sakai;Hideo Joho;Hang Li

  • Evaluation with informational and navigational intents

    Tetsuya Sakai

  • Summaries, ranked retrieval and sessions: a unified framework for information access evaluation

    Tetsuya Sakai;Zhicheng Dou

  • Search Result Diversification Based on Hierarchical Intents

    Sha Hu;Zhicheng Dou;Xiaojie Wang;Tetsuya Sakai

  • Statistical Significance, Power, and Sample Sizes: A Systematic Review of SIGIR and TOIS, 2006-2015

    Tetsuya Sakai

  • TREC 2014 Temporal Summarization Track Overview

    Javed Aslam;Fernando Diaz;Matthew Ekstrand-Abueg;Richard McCreadie

  • Overview of the NTCIR-12 Short Text Conversation Task.

    Lifeng Shang;Tetsuya Sakai;Zhengdong Lu;Hang Li

  • Overview of the NTCIR-7 ACLIA Tasks: Advanced Cross-Lingual Information Access

    Teruko Mitamura;Eric Nyberg;Hideki Shima;Tsuneaki Kato

  • Topic set size design

    Tetsuya Sakai

  • Metrics, Statistics, Tests

    Tetsuya Sakai

  • Overview of the NTCIR-8 ACLIA Tasks: Advanced Cross-Lingual Information Access.

    Teruko Mitamura;Hideki Shima;Tetsuya Sakai;Noriko Kando

Frequent Co-Authors

Noriko Kando
Noriko Kando National Institute of Informatics
Zhicheng Dou
Zhicheng Dou Renmin University of China
Chin-Yew Lin
Chin-Yew Lin Microsoft Research Asia (China)
Gareth J. F. Jones
Gareth J. F. Jones Dublin City University
Teruko Mitamura
Teruko Mitamura Carnegie Mellon University
Min Zhang
Min Zhang Tsinghua University
Ian Soboroff
Ian Soboroff National Institute of Standards and Technology
Ji-Rong Wen
Ji-Rong Wen Renmin University of China
Hang Li
Hang Li ByteDance
Stephen Robertson
Stephen Robertson University College London

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