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
Computer Science 31 13692 13278 5449 5185 160 3919

Gregory Tad Kishi publications per year

The chart shows the history of publications by Gregory Tad Kishi between 1991 and 2021, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Gregory Tad Kishi published across 31 years, from 1991 to 2021, averaging 5.7 papers a year. Output peaked at 21 publications in 2014. 17 of the 177 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1991 to 2021. Vertical axis: number of publications, 0 to 21. Peak 21 publications in 2014. 1991: 1 publication 1992: 3 publications 1993: 2 publications 1994: 1 publication 1995: 0 publications 1996: 3 publications 1997: 12 publications 1998: 4 publications 1999: 7 publications 2000: 6 publications 2001: 3 publications 2002: 18 publications 2003: 8 publications 2004: 3 publications 2005: 8 publications 2006: 3 publications 2007: 14 publications 2008: 10 publications 2009: 3 publications 2010: 1 publication 2011: 2 publications 2012: 1 publication 2013: 4 publications 2014: 21 publications 2015: 8 publications 2016: 5 publications 2017: 2 publications 2018: 7 publications 2019: 0 publications 2020: 15 publications 2021: 2 publications
1991 2021

177 publications in total across all disciplines

View publications per year as a table
Gregory Tad Kishi: publications per year, 1991 to 2021
Year Publications
1991 1
1992 3
1993 2
1994 1
1995 0
1996 3
1997 12
1998 4
1999 7
2000 6
2001 3
2002 18
2003 8
2004 3
2005 8
2006 3
2007 14
2008 10
2009 3
2010 1
2011 2
2012 1
2013 4
2014 21
2015 8
2016 5
2017 2
2018 7
2019 0
2020 15
2021 2
Total 177
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Gregory Tad Kishi 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 Gregory Tad Kishi 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, 152–161 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: 160 publications — 31st percentile

31% 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
152–161 559 160
162–171 534
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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Gregory Tad Kishi 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 Gregory Tad Kishi 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, 30–31 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: 31 D-Index — 6th percentile

6% 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 31
32–33 983
34–35 918
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

What is he best known for?

The fields of study he is best known for:

  • Operating system
  • Programming language
  • Database

Gregory Tad Kishi focuses on Database, Computer hardware, Cache, Operating system and Volume. Gregory Tad Kishi studies Data file which is a part of Database. Gregory Tad Kishi has researched Computer hardware in several fields, including Mount and Virtual tape library.

His research in Cache intersects with topics in Control and Process. His biological study deals with issues like Simulation, which deal with fields such as Real-time computing. His Computer data storage research is multidisciplinary, incorporating perspectives in Human operator, Tracking error and Message processing.

His most cited work include:

  • Automated reclamation scheduling override in a virtual tape server (153 citations)
  • Tracking error events relating to data storage drives and/or media of automated data storage library subsystems (139 citations)
  • Method, system, and program for moving data among storage units (137 citations)

What are the main themes of his work throughout his whole career to date?

Database, Computer hardware, Volume, Computer data storage and Operating system are his primary areas of study. His Database study combines topics in areas such as Computer program, Metadata, Data set and Cache. Gregory Tad Kishi works mostly in the field of Cache, limiting it down to topics relating to Security token and, in certain cases, Synchronization, as a part of the same area of interest.

His research integrates issues of Process and Volume in his study of Computer hardware. His Volume study combines topics from a wide range of disciplines, such as Mount, Real-time computing, Data mining and Information repository. His Backup study, which is part of a larger body of work in Operating system, is frequently linked to Planning target volume, bridging the gap between disciplines.

He most often published in these fields:

  • Database (30.77%)
  • Computer hardware (20.12%)
  • Volume (18.93%)

What were the highlights of his more recent work (between 2014-2021)?

  • Database (30.77%)
  • Metadata (10.06%)
  • Computer data storage (18.93%)

In recent papers he was focusing on the following fields of study:

His scientific interests lie mostly in Database, Metadata, Computer data storage, Computer program and Metadata management. Gregory Tad Kishi is studying Backup, which is a component of Database. Gregory Tad Kishi combines subjects such as Machine learning and Data classification, Artificial intelligence with his study of Metadata.

His studies deal with areas such as Node, Tree, Tree based, Set and Data structure as well as Computer data storage. The Node study which covers Replication that intersects with Computer hardware. As a part of the same scientific family, he mostly works in the field of Computer program, focusing on Object and, on occasion, Node and Computer network.

Between 2014 and 2021, his most popular works were:

  • Concurrent bulk processing of tree-based data structures (6 citations)
  • Virtual avatar authentication (6 citations)
  • Similarity based deduplication for secondary storage (5 citations)

In his most recent research, the most cited papers focused on:

  • Operating system
  • Programming language
  • Computer network

The scientist’s investigation covers issues in Database, Computer data storage, Computer program, Point and Source data. His work deals with themes such as Data segment, Metadata, Application programming interface, Auxiliary memory and Information repository, which intersect with Database. The concepts of his Computer data storage study are interwoven with issues in Tree, Tree based, Set, Object and Data structure.

His Object research is multidisciplinary, incorporating elements of Node, Computer network and Replication. The Data structure study combines topics in areas such as Distributed computing, Isolation and Data mining. The various areas that he examines in his Node study include Computer hardware and File attribute.

Best Publications

  • Tracking error events relating to data storage drives and/or media of automated data storage library subsystems

    Keith Anthony Bello;Cheryl Marie Friauf;Gregory Tad Kishi;Duke Andy Lee

  • Automated reclamation scheduling override in a virtual tape server

    Gregory Tad Kishi

  • System and method to guarantee overwrite of expired data in a virtual tape server

    Kevin L. Gibble;Gregory T. Kishi;Jonathan W. Peake

  • Method and system for efficiently importing/exporting removable storage volumes between virtual storage systems

    Wayne Charles Carlson;Gregory Tad Kishi;Jonathan Wayne Peake

  • Automated file error classification and correction in a hierarchical storage management system

    Matthew Joseph Anglin;Gregory Tad Kishi;David Lee Patterson

  • Virtual data storage system with an overrun-resistant cache using an adaptive throttle based upon the amount of cache free space

    Wayne Charles Carlson;Gregory Tad Kishi;Jonathan Wayne Peake

  • Method, system, and program for transferring data between storage devices

    Gregory Tad Kishi;Mark Allan Norman;Jonathan Wayne Peake;William Henry Travis

  • Data storage system with trained predictive cache management engine

    Gregory Tad Kishi

  • Using a bar code scanner to calibrate positioning of a robotic system

    Gregory T. Kishi;Salaheddin H. Obeid

  • Method and apparatus for providing improved caching for a virtual tape server

    Gregory Tad Kishi

  • Managing metadata for data blocks used in a deduplication system

    Glen Alan Jaquette;Gregory Tad Kishi

  • Automated read-only volume processing in a virtual tape server

    Gregory Tad Kishi

  • Automated message processing system configured to automatically manage introduction of removable data storage media into media library

    Gregory Tad Kishi

  • Preferential caching of uncopied logical volumes in an IBM peer-to-peer virtual tape server

    Gregory Tad Kishi;Mark Allan Norman;Jonathan Wayne Peake;William Henry Travis

  • Cache-failure-tolerant data storage system storing data objects with version code equipped metadata tokens

    Kenneth Fairclough Day;Douglas William Dewey;Gregory Tad Kishi

  • Method and article for apparatus for performing automated reconcile control in a virtual tape system

    Gregory Tad Kishi

  • Method and system for scrubbing data within a data storage subsystem

    Gregory T. Kishi

  • Disaster recovery method for a removable media library

    Vickie Lynn Brewer;James Arthur Fisher;Gregory Tad Kishi

  • Backup of deduplicated data

    Gregory Tad Kishi

  • Apparatus, system, and method flushing data from a cache to secondary storage

    Gregory Tad Kishi

Frequent Co-Authors

Clifford A. Pickover
Clifford A. Pickover IBM (United States)
David Bruce Kumhyr
David Bruce Kumhyr IBM (United States)

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