Waltman, Ludo
Universiteit Leiden,
Netherlands
2025 Rank: 1008
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: 2 out of 15287 Researchers
Data For The Year: 2025
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 1008 | 1134 |
| Total Cites | 6992 | 7008 |
| H-index | 21 | 22 |
| Hm-index | 11 | 11 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 140 | 140 |
| Number of Single+First Authored Papers | 56 | 56 |
| Total Cites to Single+First Authored Papers | 867 | 869 |
| Number of Single+First+Last Authored Papers | 106 | 106 |
| Total Cites to Single+First+Last Authored Papers | 5425 | 5428 |
| Composite Score | 4 | 4 |
| Number of Distinct Citing Papers | 5818 | 5829 |
| Ratio of Total Citations to Distinct Citing Papers | 1.20 | 1.20 |
| Self-Citation Percentage |
0.23%
|
|
Waltman, Ludo
Universiteit Leiden,
Netherlands
2024 Rank: 1159
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: 3 out of 14509 Researchers
Data For The Year: 2024
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 1159 | 1321 |
| Total Cites | 5761 | 5781 |
| H-index | 21 | 21 |
| Hm-index | 11 | 11 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 137 | 137 |
| Number of Single+First Authored Papers | 56 | 56 |
| Total Cites to Single+First Authored Papers | 749 | 752 |
| Number of Single+First+Last Authored Papers | 105 | 105 |
| Total Cites to Single+First+Last Authored Papers | 4408 | 4418 |
| Composite Score | 4 | 3 |
| Number of Distinct Citing Papers | 4676 | 4686 |
| Ratio of Total Citations to Distinct Citing Papers | 1.23 | 1.23 |
| Self-Citation Percentage |
0.35%
|
|
Waltman, Ludo
Universiteit Leiden,
Netherlands
2023 Rank: 1281
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: 3 out of 13675 Researchers
Data For The Year: 2023
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 1281 | 1446 |
| Total Cites | 4726 | 4748 |
| H-index | 21 | 21 |
| Hm-index | 11 | 12 |
| Number of Single Authored Papers | 8 | 8 |
| Total Cites to Single Authored Papers | 148 | 148 |
| Number of Single+First Authored Papers | 55 | 55 |
| Total Cites to Single+First Authored Papers | 754 | 758 |
| Number of Single+First+Last Authored Papers | 100 | 100 |
| Total Cites to Single+First+Last Authored Papers | 3608 | 3619 |
| Composite Score | 4 | 4 |
| Number of Distinct Citing Papers | 3704 | 3714 |
| Ratio of Total Citations to Distinct Citing Papers | 1.28 | 1.28 |
| Self-Citation Percentage |
0.46%
|
|
Waltman, Ludo
Leiden University,
Netherlands
2021 Rank: 2223
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: 6 out of 12251 Researchers
Data For The Year: 2021
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 2223 | 2504 |
| Total Cites | 4251 | 4294 |
| H-index | 23 | 23 |
| Hm-index | 13 | 13 |
| Number of Single Authored Papers | 7 | 7 |
| Total Cites to Single Authored Papers | 191 | 192 |
| Number of Single+First Authored Papers | 48 | 48 |
| Total Cites to Single+First Authored Papers | 945 | 959 |
| Number of Single+First+Last Authored Papers | 83 | 83 |
| Total Cites to Single+First+Last Authored Papers | 3243 | 3266 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 3126 | 3145 |
| Ratio of Total Citations to Distinct Citing Papers | 1.36 | 1.37 |
| Self-Citation Percentage |
1.00%
|
|
Waltman, Ludo
Leiden University,
Netherlands
2020 Rank: 2150
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: 6 out of 10391 Researchers
Data For The Year: 2020
| Metrics | Self-Citations Excluded | All |
|---|---|---|
| Rank Based on Composite Score | 2150 | 2329 |
| Total Cites | 2409 | 2499 |
| H-index | 22 | 23 |
| Hm-index | 13 | 13 |
| Number of Single Authored Papers | 7 | 7 |
| Total Cites to Single Authored Papers | 152 | 155 |
| Number of Single+First Authored Papers | 47 | 47 |
| Total Cites to Single+First Authored Papers | 714 | 755 |
| Number of Single+First+Last Authored Papers | 81 | 81 |
| Total Cites to Single+First+Last Authored Papers | 1882 | 1950 |
| Composite Score | 3 | 3 |
| Number of Distinct Citing Papers | 1676 | 1706 |
| Ratio of Total Citations to Distinct Citing Papers | 1.44 | 1.46 |
| Self-Citation Percentage |
3.60%
|
|
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