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D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Computer Science 34 11920 11575 4868 4652 171 8725

Vagelis Hristidis publications per year

The chart shows the history of publications by Vagelis Hristidis between 2000 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Vagelis Hristidis published across 26 years, from 2000 to 2025, averaging 7 papers a year. Output peaked at 18 publications in 2009. 12 of the 183 publications appeared in the last two years.

No. of publications
5 10 15
Bar chart. Horizontal axis: year, 2000 to 2025. Vertical axis: number of publications, 0 to 18. Peak 18 publications in 2009. 2000: 1 publication 2001: 2 publications 2002: 1 publication 2003: 3 publications 2004: 4 publications 2005: 1 publication 2006: 13 publications 2007: 6 publications 2008: 11 publications 2009: 18 publications 2010: 10 publications 2011: 4 publications 2012: 6 publications 2013: 11 publications 2014: 11 publications 2015: 3 publications 2016: 8 publications 2017: 6 publications 2018: 3 publications 2019: 15 publications 2020: 7 publications 2021: 14 publications 2022: 5 publications 2023: 8 publications 2024: 10 publications 2025: 2 publications
2000 2025

183 publications in total across all disciplines

View publications per year as a table
Vagelis Hristidis: publications per year, 2000 to 2025
Year Publications
2000 1
2001 2
2002 1
2003 3
2004 4
2005 1
2006 13
2007 6
2008 11
2009 18
2010 10
2011 4
2012 6
2013 11
2014 11
2015 3
2016 8
2017 6
2018 3
2019 15
2020 7
2021 14
2022 5
2023 8
2024 10
2025 2
Total 183
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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.

No. of scientists
200 400 600
Bar chart with 97 bars. Horizontal axis: publications, 32–41 to 991+. Vertical axis: number of scientists, 0 to 609. Most scientists, 609, have 142–151 publications. The last bar groups every scientist with 991 publications or more. The highlighted bar, 162–171 publications, is where this scientist sits. 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
32–41 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.

View publications distribution as a table
Number of Computer Science scientists by publication count, Research.com 2026 ranking edition. Based on 14,188 ranked scientists.
Publications Scientists This scientist
32–41 7
42–51 22
52–61 82
62–71 134
72–81 249
82–91 324
92–101 421
102–111 420
112–121 497
122–131 544
132–141 555
142–151 609
152–161 559
162–171 534 171
172–181 556
182–191 583
192–201 519
202–211 508
212–221 490
222–231 437
232–241 423
242–251 408
252–261 377
262–271 301
272–281 335
282–291 320
292–301 293
302–311 250
312–321 238
322–331 206
332–341 209
342–351 208
352–361 162
362–371 176
372–381 127
382–391 158
392–401 128
402–411 104
412–421 94
422–431 99
432–441 83
442–451 108
452–461 73
462–471 77
472–481 69
482–491 84
492–501 62
502–511 54
512–521 57
522–531 51
532–541 51
542–551 32
552–561 38
562–571 28
572–581 43
582–591 33
592–601 41
602–611 32
612–621 28
622–631 25
632–641 27
642–651 17
652–661 20
662–671 17
672–681 15
682–691 14
692–701 21
702–711 13
712–721 12
722–731 19
732–741 14
742–751 12
752–761 10
762–771 10
772–781 11
782–791 10
792–801 11
802–811 8
812–821 8
822–831 7
832–841 11
842–851 10
852–861 5
862–871 9
872–881 4
882–891 6
892–901 3
902–911 6
912–921 3
922–931 2
932–941 2
942–951 2
952–961 3
962–971 3
972–981 3
982–990 5
991+ 100
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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.

No. of scientists
200 400 600 800
Bar chart with 52 bars. Horizontal axis: D-Index, 30–31 to 131+. Vertical axis: number of scientists, 0 to 990. Most scientists, 990, have 36–37 D-Index. The last bar groups every scientist with 131 D-Index or more. The highlighted bar, 34–35 D-Index, is where this scientist sits. 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
30–31 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.

View D-Index distribution as a table
Number of Computer Science scientists by D-index, Research.com 2026 ranking edition. Based on 14,188 ranked scientists.
D-Index Scientists This scientist
30–31 879
32–33 983
34–35 918 34
36–37 990
38–39 968
40–41 907
42–43 821
44–45 763
46–47 689
48–49 543
50–51 543
52–53 518
54–55 500
56–57 458
58–59 400
60–61 337
62–63 308
64–65 292
66–67 249
68–69 213
70–71 192
72–73 189
74–75 165
76–77 139
78–79 119
80–81 121
82–83 113
84–85 88
86–87 87
88–89 75
90–91 69
92–93 57
94–95 46
96–97 38
98–99 34
100–101 36
102–103 27
104–105 37
106–107 18
108–109 31
110–111 19
112–113 16
114–115 12
116–117 20
118–119 15
120–121 5
122–123 20
124–125 8
126–127 5
128–129 7
130 3
131+ 98
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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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