Waltman, Ludo
Universiteit Leiden,
Netherlands
2025 Rank: 11244
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Social Sciences
SubField 1:
Information & Library Sciences
SubField 2:
Artificial Intelligence & Image Processing
Rank in SubField 1: 7 out of 15287 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 11244 | 13009 |
| Total Cites | 29028 | 29642 |
| H-index | 48 | 49 |
| Hm-index | 23 | 24 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 986 | 998 |
| Number of Single+First Authored Papers | 56 | 56 |
| Total Cites to Single+First Authored Papers | 6018 | 6307 |
| Number of Single+First+Last Authored Papers | 106 | 106 |
| Total Cites to Single+First+Last Authored Papers | 22419 | 22869 |
| Composite Score | 4 | 4 |
| Number of Distinct Citing Papers | 22374 | 22605 |
| Ratio of Total Citations to Distinct Citing Papers | 1.30 | 1.31 |
| Self-Citation Percentage |
2.07%
|
|
Waltman, Ludo
Universiteit Leiden,
Netherlands
2024 Rank: 14433
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Social Sciences
SubField 1:
Information & Library Sciences
SubField 2:
Artificial Intelligence & Image Processing
Rank in SubField 1: 10 out of 14509 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 14433 | 16356 |
| Total Cites | 21966 | 22561 |
| H-index | 45 | 47 |
| Hm-index | 21 | 22 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 844 | 856 |
| Number of Single+First Authored Papers | 56 | 56 |
| Total Cites to Single+First Authored Papers | 5102 | 5387 |
| Number of Single+First+Last Authored Papers | 105 | 105 |
| Total Cites to Single+First+Last Authored Papers | 16944 | 17389 |
| Composite Score | 4 | 4 |
| Number of Distinct Citing Papers | 16532 | 16752 |
| Ratio of Total Citations to Distinct Citing Papers | 1.33 | 1.35 |
| Self-Citation Percentage |
2.64%
|
|
Waltman, Ludo
Universiteit Leiden,
Netherlands
2023 Rank: 17675
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Social Sciences
SubField 1:
Information & Library Sciences
SubField 2:
Artificial Intelligence & Image Processing
Rank in SubField 1: 10 out of 13675 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 17675 | 20169 |
| Total Cites | 16174 | 16746 |
| H-index | 43 | 45 |
| Hm-index | 21 | 21 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 709 | 721 |
| Number of Single+First Authored Papers | 55 | 55 |
| Total Cites to Single+First Authored Papers | 4341 | 4622 |
| Number of Single+First+Last Authored Papers | 100 | 100 |
| Total Cites to Single+First+Last Authored Papers | 12531 | 12964 |
| Composite Score | 4 | 4 |
| Number of Distinct Citing Papers | 11831 | 12040 |
| Ratio of Total Citations to Distinct Citing Papers | 1.37 | 1.39 |
| Self-Citation Percentage |
3.42%
|
|
Waltman, Ludo
Leiden University,
Netherlands
2021 Rank: 24783
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Social Sciences
SubField 1:
Information & Library Sciences
SubField 2:
Artificial Intelligence & Image Processing
Rank in SubField 1: 11 out of 12251 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 24783 | 28450 |
| Total Cites | 9706 | 10189 |
| H-index | 40 | 41 |
| Hm-index | 19 | 20 |
| Number of Single Authored Papers | 7 | 7 |
| Total Cites to Single Authored Papers | 504 | 513 |
| Number of Single+First Authored Papers | 48 | 48 |
| Total Cites to Single+First Authored Papers | 3234 | 3481 |
| Number of Single+First+Last Authored Papers | 83 | 83 |
| Total Cites to Single+First+Last Authored Papers | 7655 | 8025 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 6811 | 6986 |
| Ratio of Total Citations to Distinct Citing Papers | 1.43 | 1.46 |
| Self-Citation Percentage |
4.74%
|
|
Waltman, Ludo
Leiden University,
Netherlands
2020 Rank: 36496
Overall Rank
Rank in SubField 1
Publications
Citations
Main Field:
Social Sciences
SubField 1:
Information & Library Sciences
SubField 2:
Artificial Intelligence & Image Processing
Rank in SubField 1: 26 out of 10391 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 36496 | 41186 |
| Total Cites | 6081 | 6520 |
| H-index | 36 | 37 |
| Hm-index | 18 | 18 |
| Number of Single Authored Papers | 7 | 7 |
| Total Cites to Single Authored Papers | 352 | 360 |
| Number of Single+First Authored Papers | 47 | 47 |
| Total Cites to Single+First Authored Papers | 2420 | 2652 |
| Number of Single+First+Last Authored Papers | 81 | 81 |
| Total Cites to Single+First+Last Authored Papers | 4900 | 5246 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 4153 | 4307 |
| Ratio of Total Citations to Distinct Citing Papers | 1.46 | 1.51 |
| Self-Citation Percentage |
6.73%
|
|
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