World's Best Scientists 2026 revealed!

D-Index & Metrics

Computer Science

D-Index
34
Citations
8725
World Ranking
11920
National Ranking
4868

Vagelis Hristidis 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 Vagelis Hristidis 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: 171 publications — 35th percentile

35% of scientists in this discipline score the same or lower.

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

Vagelis Hristidis 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 Vagelis Hristidis 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

Vagelis Hristidis is affiliated with the University of California, Riverside in the United States. The main field of their research is Computer Science, with a focus on several subfields. These include Artificial Intelligence, Computer Networks and Communications, General Health Professions, Signal Processing, and Information Systems.

Their research covers a variety of topics related to computer science and healthcare, particularly in areas where technology intersects with human services. Key topics of their work are:

  • Topic Modeling
  • Data Management and Algorithms
  • Speech and Dialogue Systems
  • Artificial Intelligence in Healthcare and Education
  • Advanced Database Systems and Queries
  • Natural Language Processing Techniques
  • AI in Service Interactions

Hristidis has collaborated with several frequent co-authors, notably Jannat Ara Meem, Ryan Rivas, Muhammad Shihab Rashid, Nicole Ruggiano, and Ellen L. Brown. These collaborations suggest a consistent engagement with a network of researchers focused on related interdisciplinary topics.

The scientist has contributed to several publication venues, frequently appearing in:

  • arXiv (Cornell University)
  • Journal of Medical Internet Research
  • The VLDB Journal
  • Journal Of Big Data
  • Proceedings of the International AAAI Conference on Web and Social Media

Some of the recent papers authored or co-authored by Vagelis Hristidis include:

  • "Chatbots to Support People With Dementia and Their Caregivers: Systematic Review of Functions and Quality" (2021) published in the Journal of Medical Internet Research
  • "ChatGPT vs Google for Queries Related to Dementia and Other Cognitive Decline: Comparison of Results" (2023) published in the Journal of Medical Internet Research
  • "Large language models as decision aids in neuro-oncology: a review of shared decision-making applications" (2024) published in the Journal of Cancer Research and Clinical Oncology
  • "Use of Large Language Models to Assess the Likelihood of Epidemics From the Content of Tweets: Infodemiology Study" (2024) published in the Journal of Medical Internet Research
  • "Classification of Health-Related Social Media Posts: Evaluation of Post Content-Classifier Models and Analysis of User Demographics" (2020) published in JMIR Public Health and Surveillance

Best Publications

  • Discover: keyword search in relational databases

    Vagelis Hristidis;Yannis Papakonstantinou

  • Efficient IR-style keyword search over relational databases

    Vagelis Hristidis;Luis Gravano;Yannis Papakonstantinou

  • Objectrank: authority-based keyword search in databases

    Andrey Balmin;Vagelis Hristidis;Yannis Papakonstantinou

  • Keyword Search on Spatial Databases

    I. De Felipe;V. Hristidis;N. Rishe

  • PREFER: a system for the efficient execution of multi-parametric ranked queries

    Vagelis Hristidis;Nick Koudas;Yannis Papakonstantinou

  • Keyword proximity search on XML graphs

    V. Hristidis;Y. Papakonstantinou;A. Balmin

  • Correlating financial time series with micro-blogging activity

    Eduardo J. Ruiz;Vagelis Hristidis;Carlos Castillo;Aristides Gionis

  • Survey of data management and analysis in disaster situations

    Vagelis Hristidis;Shu-Ching Chen;Tao Li;Steven Luis

  • Experiences on Processing Spatial Data with MapReduce

    Ariel Cary;Zhengguo Sun;Vagelis Hristidis;Naphtali Rishe

  • Keyword proximity search in XML trees

    V. Hristidis;N. Koudas;Y. Papakonstantinou;Divesh Srivastava

  • Probabilistic ranking of database query results

    Surajit Chaudhuri;Gautam Das;Vagelis Hristidis;Gerhard Weikum

  • BORG: block-reORGanization for self-optimizing storage systems

    Medha Bhadkamkar;Jorge Guerra;Luis Useche;Sam Burnett

  • Probabilistic information retrieval approach for ranking of database query results

    Surajit Chaudhuri;Gautam Das;Vagelis Hristidis;Gerhard Weikum

  • Authority-based keyword search in databases

    Vagelis Hristidis;Heasoo Hwang;Yannis Papakonstantinou

  • A system for query-specific document summarization

    Ramakrishna Varadarajan;Vagelis Hristidis

  • Algorithms and applications for answering ranked queries using ranked views

    Vagelis Hristidis;Yannis Papakonstantinou

  • Branch-and-bound processing of ranked queries

    Yufei Tao;Vagelis Hristidis;Dimitris Papadias;Yannis Papakonstantinou

  • Standing Out in a Crowd: Selecting Attributes for Maximum Visibility

    M. Miah;G. Das;V. Hristidis;H. Mannila

  • Keyword proximity search in XML trees

    Unknown

  • FACeTOR: cost-driven exploration of faceted query results

    Abhijith Kashyap;Vagelis Hristidis;Michalis Petropoulos

  • Ordering the attributes of query results

    Gautam Das;Vagelis Hristidis;Nishant Kapoor;S. Sudarshan

Frequent Co-Authors

Gautam Das
Gautam Das The University of Texas at Arlington
Yannis Papakonstantinou
Yannis Papakonstantinou University of California, San Diego
Vassilis J. Tsotras
Vassilis J. Tsotras University of California, Riverside
Nick Koudas
Nick Koudas University of Toronto
Panagiotis G. Ipeirotis
Panagiotis G. Ipeirotis New York University
Surajit Chaudhuri
Surajit Chaudhuri Microsoft (United States)
Tao Li
Tao Li Florida International University
Gerhard Weikum
Gerhard Weikum Max Planck Institute for Informatics
Michail Vlachos
Michail Vlachos University of Lausanne
Neal E. Young
Neal E. Young University of California, Riverside

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