World's Best Scientists 2026 revealed!

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Mathematics 73 225 192 127 103 186 69423
Computer Science 82 923 892 502 483 247 75297

John E. Hopcroft publications per year

The chart shows the history of publications by John E. Hopcroft between 1965 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. John E. Hopcroft published across 61 years, from 1965 to 2025, averaging 4.2 papers a year. Output peaked at 11 publications in 2017. 8 of the 259 publications appeared in the last two years.

No. of publications
2 4 6 8 10
Bar chart. Horizontal axis: year, 1965 to 2025. Vertical axis: number of publications, 0 to 11. Peak 11 publications in 2017. 1965: 3 publications 1966: 3 publications 1967: 8 publications 1968: 10 publications 1969: 9 publications 1970: 4 publications 1971: 10 publications 1972: 3 publications 1973: 8 publications 1974: 5 publications 1975: 1 publication 1976: 3 publications 1977: 1 publication 1978: 4 publications 1979: 2 publications 1980: 3 publications 1981: 3 publications 1982: 4 publications 1983: 3 publications 1984: 3 publications 1985: 6 publications 1986: 7 publications 1987: 6 publications 1988: 4 publications 1989: 6 publications 1990: 3 publications 1991: 2 publications 1992: 1 publication 1993: 0 publications 1994: 0 publications 1995: 1 publication 1996: 0 publications 1997: 0 publications 1998: 1 publication 1999: 0 publications 2000: 0 publications 2001: 3 publications 2002: 0 publications 2003: 1 publication 2004: 2 publications 2005: 3 publications 2006: 4 publications 2007: 5 publications 2008: 7 publications 2009: 3 publications 2010: 3 publications 2011: 8 publications 2012: 10 publications 2013: 6 publications 2014: 2 publications 2015: 8 publications 2016: 6 publications 2017: 11 publications 2018: 8 publications 2019: 7 publications 2020: 9 publications 2021: 8 publications 2022: 6 publications 2023: 4 publications 2024: 4 publications 2025: 4 publications
1965 2025

259 publications in total across all disciplines

View publications per year as a table
John E. Hopcroft: publications per year, 1965 to 2025
Year Publications
1965 3
1966 3
1967 8
1968 10
1969 9
1970 4
1971 10
1972 3
1973 8
1974 5
1975 1
1976 3
1977 1
1978 4
1979 2
1980 3
1981 3
1982 4
1983 3
1984 3
1985 6
1986 7
1987 6
1988 4
1989 6
1990 3
1991 2
1992 1
1993 0
1994 0
1995 1
1996 0
1997 0
1998 1
1999 0
2000 0
2001 3
2002 0
2003 1
2004 2
2005 3
2006 4
2007 5
2008 7
2009 3
2010 3
2011 8
2012 10
2013 6
2014 2
2015 8
2016 6
2017 11
2018 8
2019 7
2020 9
2021 8
2022 6
2023 4
2024 4
2025 4
Total 259
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John E. Hopcroft publications per year - data summary

  • John E. Hopcroft, a Mathematics scholar from Cornell University, has 259 publications recorded across 61 years, from 1965 to 2025.
  • The oldest publication on record dates to 1965 and the most recent to 2025.
  • The most productive year is 2017, with 11 publications.
  • The least productive years with any output are 1975, 1977, 1992, 1995 and others, with 1 publication each.
  • 7 of the 61 years in the span carry no publications at all (1993, 1994, 1996, 1997 and others).
  • The rate of publication averages 4.2 papers per year over the whole span, or 4.8 per year counting only the 54 years with at least one publication.
  • The last 5 years on the chart (2021-2025) hold 26 publications, 10% of the career total.
  • Split into equal eras - 1965-1985: 96 publications (4.6 per year); 1986-2006: 44 publications (2.1 per year); 2007-2025: 119 publications (6.3 per year).
  • Comparing the opening and closing eras, the overall trend of publication is rising.

John E. Hopcroft publication distribution in Mathematics in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Mathematics in 2026. The highlighted bar marks where John E. Hopcroft sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 100 bars. Horizontal axis: publications, 42–46 to 537+. Vertical axis: number of scientists, 0 to 112. Most scientists, 112, have 142–146 publications. The last bar groups every scientist with 537 publications or more. The highlighted bar, 182–186 publications, is where this scientist sits. 42–46 publications: 3 scientists 47–51 publications: 5 scientists 52–56 publications: 7 scientists 57–61 publications: 20 scientists 62–66 publications: 14 scientists 67–71 publications: 25 scientists 72–76 publications: 19 scientists 77–81 publications: 35 scientists 82–86 publications: 50 scientists 87–91 publications: 60 scientists 92–96 publications: 86 scientists 97–101 publications: 84 scientists 102–106 publications: 83 scientists 107–111 publications: 90 scientists 112–116 publications: 99 scientists 117–121 publications: 90 scientists 122–126 publications: 91 scientists 127–131 publications: 109 scientists 132–136 publications: 110 scientists 137–141 publications: 98 scientists 142–146 publications: 112 scientists 147–151 publications: 102 scientists 152–156 publications: 88 scientists 157–161 publications: 106 scientists 162–166 publications: 83 scientists 167–171 publications: 102 scientists 172–176 publications: 77 scientists 177–181 publications: 81 scientists 182–186 publications: 78 scientists 187–191 publications: 71 scientists 192–196 publications: 92 scientists 197–201 publications: 64 scientists 202–206 publications: 69 scientists 207–211 publications: 64 scientists 212–216 publications: 62 scientists 217–221 publications: 58 scientists 222–226 publications: 53 scientists 227–231 publications: 50 scientists 232–236 publications: 46 scientists 237–241 publications: 46 scientists 242–246 publications: 46 scientists 247–251 publications: 43 scientists 252–256 publications: 29 scientists 257–261 publications: 45 scientists 262–266 publications: 30 scientists 267–271 publications: 33 scientists 272–276 publications: 34 scientists 277–281 publications: 30 scientists 282–286 publications: 31 scientists 287–291 publications: 21 scientists 292–296 publications: 34 scientists 297–301 publications: 26 scientists 302–306 publications: 10 scientists 307–311 publications: 17 scientists 312–316 publications: 23 scientists 317–321 publications: 13 scientists 322–326 publications: 16 scientists 327–331 publications: 26 scientists 332–336 publications: 13 scientists 337–341 publications: 13 scientists 342–346 publications: 16 scientists 347–351 publications: 17 scientists 352–356 publications: 12 scientists 357–361 publications: 18 scientists 362–366 publications: 18 scientists 367–371 publications: 9 scientists 372–376 publications: 11 scientists 377–381 publications: 8 scientists 382–386 publications: 8 scientists 387–391 publications: 9 scientists 392–396 publications: 9 scientists 397–401 publications: 8 scientists 402–406 publications: 11 scientists 407–411 publications: 6 scientists 412–416 publications: 6 scientists 417–421 publications: 9 scientists 422–426 publications: 8 scientists 427–431 publications: 5 scientists 432–436 publications: 8 scientists 437–441 publications: 8 scientists 442–446 publications: 4 scientists 447–451 publications: 4 scientists 452–456 publications: 4 scientists 457–461 publications: 2 scientists 462–466 publications: 2 scientists 467–471 publications: 4 scientists 472–476 publications: 3 scientists 477–481 publications: 3 scientists 482–486 publications: 6 scientists 487–491 publications: 3 scientists 492–496 publications: 5 scientists 497–501 publications: 5 scientists 502–506 publications: 1 scientist 507–511 publications: 6 scientists 512–516 publications: 4 scientists 517–521 publications: 1 scientist 522–526 publications: 3 scientists 527–531 publications: 1 scientist 532–536 publications: 4 scientists 537+ publications: 100 scientists
42–46 publications 537+

This scientist: 186 publications — 56th percentile

56% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 537 publications or more.

View publications distribution as a table
Number of Mathematics scientists by publication count, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
Publications Scientists This scientist
42–46 3
47–51 5
52–56 7
57–61 20
62–66 14
67–71 25
72–76 19
77–81 35
82–86 50
87–91 60
92–96 86
97–101 84
102–106 83
107–111 90
112–116 99
117–121 90
122–126 91
127–131 109
132–136 110
137–141 98
142–146 112
147–151 102
152–156 88
157–161 106
162–166 83
167–171 102
172–176 77
177–181 81
182–186 78 186
187–191 71
192–196 92
197–201 64
202–206 69
207–211 64
212–216 62
217–221 58
222–226 53
227–231 50
232–236 46
237–241 46
242–246 46
247–251 43
252–256 29
257–261 45
262–266 30
267–271 33
272–276 34
277–281 30
282–286 31
287–291 21
292–296 34
297–301 26
302–306 10
307–311 17
312–316 23
317–321 13
322–326 16
327–331 26
332–336 13
337–341 13
342–346 16
347–351 17
352–356 12
357–361 18
362–366 18
367–371 9
372–376 11
377–381 8
382–386 8
387–391 9
392–396 9
397–401 8
402–406 11
407–411 6
412–416 6
417–421 9
422–426 8
427–431 5
432–436 8
437–441 8
442–446 4
447–451 4
452–456 4
457–461 2
462–466 2
467–471 4
472–476 3
477–481 3
482–486 6
487–491 3
492–496 5
497–501 5
502–506 1
507–511 6
512–516 4
517–521 1
522–526 3
527–531 1
532–536 4
537+ 100
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John E. Hopcroft publication distribution in Mathematics in 2026 - data summary

  • The chart plots the publication count of all 3,584 Mathematics scientists ranked by Research.com in 2026, grouped into 100 ranges running from 42–46 to 537+ publications.
  • John E. Hopcroft, a Mathematics scholar from Cornell University, records 186 publications - the 56th percentile of the discipline.
  • 56% of ranked Mathematics scientists score the same or lower than John E. Hopcroft, and about 44% score higher.
  • The median of the discipline falls in the 172–176 publications range, and John E. Hopcroft ranks above the median.
  • The most crowded range is 142–146 publications, holding 112 scientists (3% of the field).
  • 47% of the field sits in the lowest quarter of the value range (up to 162–166 publications), so the distribution leans towards the lower end of the scale.
  • The final bar has no upper bound: it groups every scientist with 537 publications or more, 100 scientists in all (3% of the field).

John E. Hopcroft D-index placement in Mathematics in 2026

The chart shows the D-index (discipline H-index) distribution of Mathematics scientists ranked by Research.com in 2026. The highlighted bar marks where John E. Hopcroft sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 57 bars. Horizontal axis: D-Index, 30 to 86+. Vertical axis: number of scientists, 0 to 174. Most scientists, 174, have 30 D-Index. The last bar groups every scientist with 86 D-Index or more. The highlighted bar, 73 D-Index, is where this scientist sits. 30 D-Index: 174 scientists 31 D-Index: 151 scientists 32 D-Index: 174 scientists 33 D-Index: 117 scientists 34 D-Index: 136 scientists 35 D-Index: 127 scientists 36 D-Index: 145 scientists 37 D-Index: 153 scientists 38 D-Index: 150 scientists 39 D-Index: 150 scientists 40 D-Index: 138 scientists 41 D-Index: 136 scientists 42 D-Index: 93 scientists 43 D-Index: 108 scientists 44 D-Index: 115 scientists 45 D-Index: 112 scientists 46 D-Index: 103 scientists 47 D-Index: 75 scientists 48 D-Index: 59 scientists 49 D-Index: 67 scientists 50 D-Index: 60 scientists 51 D-Index: 57 scientists 52 D-Index: 59 scientists 53 D-Index: 62 scientists 54 D-Index: 60 scientists 55 D-Index: 50 scientists 56 D-Index: 42 scientists 57 D-Index: 54 scientists 58 D-Index: 50 scientists 59 D-Index: 42 scientists 60 D-Index: 41 scientists 61 D-Index: 35 scientists 62 D-Index: 40 scientists 63 D-Index: 21 scientists 64 D-Index: 31 scientists 65 D-Index: 27 scientists 66 D-Index: 29 scientists 67 D-Index: 19 scientists 68 D-Index: 25 scientists 69 D-Index: 17 scientists 70 D-Index: 18 scientists 71 D-Index: 12 scientists 72 D-Index: 14 scientists 73 D-Index: 13 scientists 74 D-Index: 18 scientists 75 D-Index: 9 scientists 76 D-Index: 11 scientists 77 D-Index: 10 scientists 78 D-Index: 9 scientists 79 D-Index: 16 scientists 80 D-Index: 12 scientists 81 D-Index: 10 scientists 82 D-Index: 5 scientists 83 D-Index: 5 scientists 84 D-Index: 13 scientists 85 D-Index: 6 scientists 86+ D-Index: 99 scientists
30 D-Index 86+

This scientist: 73 D-Index — 94th percentile

94% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 86 D-Index or more.

View D-Index distribution as a table
Number of Mathematics scientists by D-index, Research.com 2026 ranking edition. Based on 3,584 ranked scientists.
D-Index Scientists This scientist
30 174
31 151
32 174
33 117
34 136
35 127
36 145
37 153
38 150
39 150
40 138
41 136
42 93
43 108
44 115
45 112
46 103
47 75
48 59
49 67
50 60
51 57
52 59
53 62
54 60
55 50
56 42
57 54
58 50
59 42
60 41
61 35
62 40
63 21
64 31
65 27
66 29
67 19
68 25
69 17
70 18
71 12
72 14
73 13 73
74 18
75 9
76 11
77 10
78 9
79 16
80 12
81 10
82 5
83 5
84 13
85 6
86+ 99
Download as CSV

John E. Hopcroft D-index placement in Mathematics in 2026 - data summary

  • The chart plots the discipline H-index (D-index) of all 3,584 Mathematics scientists ranked by Research.com in 2026, grouped into 57 ranges running from 30 to 86+ D-Index.
  • John E. Hopcroft, a Mathematics scholar from Cornell University, records 73 D-Index - the 94th percentile of the discipline.
  • 94% of ranked Mathematics scientists score the same or lower than John E. Hopcroft, and about 6% score higher.
  • The median of the discipline falls in the 42 D-Index range, and John E. Hopcroft ranks above the median.
  • The most crowded range is 30 D-Index, holding 174 scientists (5% of the field).
  • 58% of the field sits in the lowest quarter of the value range (up to 44 D-Index), so the distribution is heavily right-skewed and high scores are rare.
  • The final bar has no upper bound: it groups every scientist with 86 D-Index or more, 99 scientists in all (3% of the field).

Research.com Recognitions

  • 2010 - IEEE John von Neumann Medal “For laying the foundations for the fields of automata and language theory and many seminal contributions to theoretical computer science.”
  • 2009 - SIAM Fellow For advances in the design and analysis of algorithms.
  • 2009 - Member of the National Academy of Sciences
  • 2008 - ACM Karl V. Karlstrom Outstanding Educator Award For his vision of and impact on computer science, including co- authoring field-defining texts on theory and algorithms, which continue to influence students 40 years later, advising PhD students who themselves are now contributing greatly to computer science, and providing influential leadership in computer science research and education at the national and international level.
  • 1994 - ACM Fellow For fundamental achievements in the design and analysis of algorithms and data structures.
  • 1989 - Member of the National Academy of Engineering For fundamental contributions to computer algorithms and for authorship of outstanding computer science textbooks.
  • 1987 - Fellow of the American Academy of Arts and Sciences
  • 1987 - Fellow of the American Association for the Advancement of Science (AAAS)
  • 1987 - IEEE Fellow For contributions to the field of computing.
  • 1986 - A. M. Turing Award For fundamental achievements in the design and analysis of algorithms and data structures.
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences
  • Foreign Member, Chinese Academy of Sciences

Overview

John E. Hopcroft is affiliated with Cornell University in the United States and has a research portfolio covering various aspects of computer science and physics. Their work spans 69 publications in computer science and 16 in physics and astronomy, with a particular focus on artificial intelligence, computer vision and pattern recognition, statistical and nonlinear physics, transportation, and computational theory and mathematics.

Hopcroft's notable topics of work include:

  • Complex Network Analysis Techniques
  • Machine Learning and Algorithms
  • Human Mobility and Location-Based Analysis
  • Algorithms and Data Compression
  • Anomaly Detection Techniques and Applications
  • Advanced Neural Network Applications
  • Advanced Clustering Algorithms Research

Frequent co-authors in Hopcroft's collaborations include Avrim Blum, Ravindran Kannan, Kun He, and Meng Wang.

Hopcroft has contributed extensively to various publication venues. The most frequent of these are:

  • arXiv (Cornell University)
  • ACM Transactions on Knowledge Discovery from Data
  • 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
  • Knowledge-Based Systems
  • IEEE Transactions on Information Forensics and Security

Representative recent papers authored or co-authored by Hopcroft include:

  • "Stochastic Variance Reduced Ensemble Adversarial Attack for Boosting the Adversarial Transferability," 2022, 2022 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)
  • "HoSIM: Higher-order Structural Importance based method for multiple local community detection," 2022, Knowledge-Based Systems
  • "Stochastic Variance Reduced Ensemble Adversarial Attack for Boosting the Adversarial Transferability," 2021, arXiv (Cornell University)
  • "Why Robust Generalization in Deep Learning is Difficult: Perspective of Expressive Power," 2022, arXiv (Cornell University)
  • "Integrating Large Circular Kernels into CNNs through Neural Architecture Search," 2021, arXiv (Cornell University)

Hopcroft has also authored the book Foundations of Data Science, published by Cambridge University Press in 2020, which has been cited extensively.

The scientist has received multiple honors and awards throughout their career, including:

  • IEEE John von Neumann Medal (2010) for contributions to automata and language theory and theoretical computer science
  • SIAM Fellow (2009) for advances in algorithm design and analysis
  • Member of the National Academy of Sciences (2009)
  • ACM Karl V. Karlstrom Outstanding Educator Award (2008) for impact on computer science education and research leadership
  • ACM Fellow (1994) for achievements in algorithms and data structures
  • Member of the National Academy of Engineering (1989) for contributions to computer algorithms and textbooks
  • IEEE Fellow (1987) for contributions to computing
  • Fellow of the American Association for the Advancement of Science (1987)
  • Fellow of the American Academy of Arts and Sciences (1987)
  • A. M. Turing Award (1986) for achievements in algorithm and data structure design and analysis
  • Foreign Member of the Chinese Academy of Sciences

Best Publications

  • Introduction to Automata Theory, Languages, and Computation

    John E. Hopcroft;Rajeev Motwani;Rotwani;Jeffrey D. Ullman

  • The Design and Analysis of Computer Algorithms

    Alfred V. Aho;John E. Hopcroft

  • Data Structures and Algorithms

    Alfred V. Aho;John E. Hopcroft;Jeffrey Ullman

  • An $n^{5/2} $ Algorithm for Maximum Matchings in Bipartite Graphs

    John E. Hopcroft;Richard M. Karp

  • Formal Languages and Their Relation to Automata

    John E. Hopcroft;Jeffrey D. Ullman

  • Efficient Planarity Testing

    John Hopcroft;Robert Tarjan

  • Algorithm 447: efficient algorithms for graph manipulation

    John Hopcroft;Robert Tarjan

  • Introduction To Automata Theory, Languages And Computation, 3Rd Edition

    John E. Hopcroft;Rajeev Motwani;Jeffrey D. Ullman

  • An n log n algorithm for minimizing states in a finite automaton

    John E. Hopcroft

  • Dividing a Graph into Triconnected Components

    John E. Hopcroft;Robert Endre Tarjan

  • The Directed Subgraph Homeomorphism Problem

    Steven Fortune;John E. Hopcroft;James C. Wyllie

  • Routing, merging, and sorting on parallel models of computation

    A. Borodin;J. E. Hopcroft

  • Linear time algorithm for isomorphism of planar graphs (Preliminary Report)

    J. E. Hopcroft;J. K. Wong

  • Snapshot Ensembles: Train 1, Get M for Free

    Gao Huang;Yixuan Li;Geoff Pleiss;Zhuang Liu

  • On the Complexity of Motion Planning for Multiple Independent Objects; Pspace Hardness of the Warehouseman's Problem

    J.E. Hopcroft;J.T. Schwartz;M. Sharir

  • Are Randomly Grown Graphs Really Random

    D. S. Callaway;J. E. Hopcroft;J. M. Kleinberg;M. E. J. Newman

  • Stacked Generative Adversarial Networks

    Xun Huang;Yixuan Li;Omid Poursaeed;John Hopcroft

  • Tracking evolving communities in large linked networks

    John Hopcroft;Omar Khan;Brian Kulis;Bart Selman

  • Triangular Factorization and Inversion by Fast Matrix Multiplication

    James R. Bunch;John E. Hopcroft

  • Tracing surface intersections

    C. L. Bajaj;C. M. Hoffman;R. E. Lynch;J. E. H. Hopcroft

Frequent Co-Authors

Jeffrey D. Ullman
Jeffrey D. Ullman Stanford University
Robert E. Tarjan
Robert E. Tarjan Princeton University
Christoph M. Hoffmann
Christoph M. Hoffmann Purdue University West Lafayette
Alfred V. Aho
Alfred V. Aho Columbia University
Allan Borodin
Allan Borodin University of Toronto
Juris Hartmanis
Juris Hartmanis Cornell University
Liwei Wang
Liwei Wang Peking University
Ravi Kannan
Ravi Kannan Microsoft (United States)
Richard M. Karp
Richard M. Karp University of California, Berkeley
Sue Whitesides
Sue Whitesides University of Victoria

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