World's Best Scientists 2026 revealed!

D-Index & Metrics

Computer Science

D-Index
41
Citations
6799
World Ranking
8868
National Ranking
3778

Hironobu Takagi 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 Hironobu Takagi 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: 126 publications — 17th percentile

17% of scientists in this discipline score the same or lower.

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

Hironobu Takagi 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 Hironobu Takagi 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

Hironobu Takagi is affiliated with IBM in the United States and has contributed extensively to research across several interconnected fields. Their work primarily spans Engineering, Neuroscience, and Computer Science, with focused subfields including Cognitive Neuroscience, Computer Vision and Pattern Recognition, Social Psychology, Building and Construction, and Human-Computer Interaction.

The research conducted by Takagi emphasizes topics such as tactile and sensory interactions, smart parking systems, human-automation interaction and safety, video surveillance and tracking methods, older adults driving studies, evacuation and crowd dynamics, and social robot interaction and human-robot interaction.

Takagi's recent publications demonstrate a strong orientation toward assistive technologies and human interaction with automated systems. The following papers highlight key contributions:

  • Guiding Blind Pedestrians in Public Spaces by Understanding Walking Behavior of Nearby Pedestrians, 2020, Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies
  • Corridor-Walker: Mobile Indoor Walking Assistance for Blind People to Avoid Obstacles and Recognize Intersections, 2022, Proceedings of the ACM on Human-Computer Interaction
  • How Users, Facility Managers, and Bystanders Perceive and Accept a Navigation Robot for Visually Impaired People in Public Buildings, 2022, 2022 31st IEEE International Conference on Robot and Human Interactive Communication (RO-MAN)
  • Using Speech Data From Interactions With a Voice Assistant to Predict the Risk of Future Accidents for Older Drivers: Prospective Cohort Study, 2021, Journal of Medical Internet Research
  • ChitChatGuide: Conversational Interaction Using Large Language Models for Assisting People with Visual Impairments to Explore a Shopping Mall, 2024, Proceedings of the ACM on Human-Computer Interaction

Among Takagi's frequent coauthors are Seita Kayukawa, Chieko Asakawa, Shigeo Morishima, Masaki Kuribayashi, and Daisuke Sato. Together, their collaboration has produced multiple publications within venues prominent in human-computer interaction and assistive technology domains.

Takagi's research has been published in venues such as:

  • Proceedings of the ACM on Human-Computer Interaction
  • Proceedings of the ACM on Interactive Mobile Wearable and Ubiquitous Technologies
  • 2022 31st IEEE International Conference on Robot and Human Interactive Communication (RO-MAN)
  • Journal of Medical Internet Research
  • Bioscience Biotechnology and Biochemistry

Best Publications

  • Optimal Transmission Ranges for Randomly Distributed Packet Radio Terminals

    H. Takagi;L. Kleinrock

  • NavCog: a navigational cognitive assistant for the blind

    Dragan Ahmetovic;Cole Gleason;Chengxiong Ruan;Kris Kitani

  • Throughput Analysis for Persistent CSMA Systems

    H. Takagi;L. Kleinrock

  • System and method for information access

    Hironobu Takagi;Chieko Asakawa

  • NavCog3: An Evaluation of a Smartphone-Based Blind Indoor Navigation Assistant with Semantic Features in a Large-Scale Environment

    Daisuke Sato;Uran Oh;Kakuya Naito;Hironobu Takagi

  • Accessibility designer: visualizing usability for the blind

    Hironobu Takagi;Chieko Asakawa;Kentarou Fukuda;Junji Maeda

  • Annotation-based transcoding for nonvisual web access

    Chieko Asakawa;Hironobu Takagi

  • Analysis of navigability of Web applications for improving blind usability

    Hironobu Takagi;Shin Saito;Kentarou Fukuda;Chieko Asakawa

  • Social accessibility: achieving accessibility through collaborative metadata authoring

    Hironobu Takagi;Shinya Kawanaka;Masatomo Kobayashi;Takashi Itoh

  • XPath evaluation method, XML document processing system and program using the same

    Hiroaki Nakamura;Hironobu Takagi;Madoka Yuriyama

  • Site-wide annotation: reconstructing existing pages to be accessible

    Hironobu Takagi;Chieko Asakawa;Kentarou Fukuda;Junji Maeda

  • Smartphone-based Indoor Localization for Blind Navigation across Building Complexes

    Masayuki Murata;Dragan Ahmetovic;Daisuke Sato;Hironobu Takagi

  • System and media for simplifying web contents, and method thereof

    Hironobu Takagi;Chieko Asakawa

  • Transcoding proxy for nonvisual web access

    Hironobu Takagi;Chieko Asakawa

  • Maximum listening speeds for the blind

    Chieko Asakawa;Hironobu Takagi;Shuichi Ino;Tohru Ifukube

  • Making multimedia content accessible for screen reader users

    Hisashi Miyashita;Daisuke Sato;Hironobu Takagi;Chieko Asakawa

  • Characteristics of Elderly User Behavior on Mobile Multi-touch Devices

    Susumu Harada;Daisuke Sato;Hironobu Takagi;Chieko Asakawa

  • NavCog3 in the Wild: Large-scale Blind Indoor Navigation Assistant with Semantic Features

    Daisuke Sato;Uran Oh;João Guerreiro;Dragan Ahmetovic

  • Output Processes in Contention Packet Broadcasting Systems

    H. Takagi;L. Kleinrock

  • Achieving Practical and Accurate Indoor Navigation for People with Visual Impairments

    Dragan Ahmetovic;Masayuki Murata;Cole Gleason;Erin Brady

  • Aibrowser for multimedia: introducing multimedia content accessibility for visually impaired users

    Hisashi Miyashita;Daisuke Sato;Hironobu Takagi;Chieko Asakawa

Frequent Co-Authors

Chieko Asakawa
Chieko Asakawa Carnegie Mellon University
Kris M. Kitani
Kris M. Kitani Carnegie Mellon University
Leonard Kleinrock
Leonard Kleinrock University of California, Los Angeles
Masayuki Murata
Masayuki Murata Osaka University
Michitaka Hirose
Michitaka Hirose University of Tokyo
Jeffrey P. Bigham
Jeffrey P. Bigham Carnegie Mellon University

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