Ludo Waltman

44.2k total citations · 13 hit papers
126 papers, 26.2k citations indexed

About

Ludo Waltman is a scholar working on Statistics, Probability and Uncertainty, Artificial Intelligence and Information Systems. According to data from OpenAlex, Ludo Waltman has authored 126 papers receiving a total of 26.2k indexed citations (citations by other indexed papers that have themselves been cited), including 64 papers in Statistics, Probability and Uncertainty, 30 papers in Artificial Intelligence and 27 papers in Information Systems. Recurrent topics in Ludo Waltman's work include scientometrics and bibliometrics research (64 papers), Complex Network Analysis Techniques (17 papers) and Advanced Text Analysis Techniques (15 papers). Ludo Waltman is often cited by papers focused on scientometrics and bibliometrics research (64 papers), Complex Network Analysis Techniques (17 papers) and Advanced Text Analysis Techniques (15 papers). Ludo Waltman collaborates with scholars based in Netherlands, United States and United Kingdom. Ludo Waltman's co-authors include Nees Jan van Eck, Paul Wouters, Martijn S. Visser, Antonio Perianes‐Rodríguez, Sarah de Rijcke, Ismael Ràfols, Diana Hicks, Anthony F. J. van Raan, Jan van den Berg and Thed N. van Leeuwen and has published in prestigious journals such as Nature, Science and SHILAP Revista de lepidopterología.

In The Last Decade

Ludo Waltman

120 papers receiving 25.1k citations

Hit Papers

Software survey: VOSviewer, a computer program for biblio... 2009 2026 2014 2020 2009 2017 2015 2016 2016 4.0k 8.0k 12.0k

Peers

Ludo Waltman
Comparison fields: 5 of 242
  • Statistics, Probability and Uncertainty 5.3k
  • Information Systems 2.7k
  • Strategy and Management 2.7k
  • Sociology and Political Science 2.5k
  • Economics and Econometrics 2.0k
Replace Nees Jan van Eck with:
Nees Jan van Eck Netherlands
Loet Leydesdorff Netherlands
Chaomei Chen United States
Larry V. Hedges United States
Lutz Bornmann Germany
Henry Small United States
Keith E. Muller United States
Wolfgang Glänzel Belgium
J. Richard Landis United States
Jacob Cohen United States
Nees Jan van Eck Netherlands View profile →
Citations per field, relative to Ludo Waltman
Ludo Waltman · 1×
Citations per year, relative to Ludo Waltman
Ludo Waltman · 1×

Countries citing papers authored by Ludo Waltman

Since Specialization
Citations

This map shows the geographic impact of Ludo Waltman's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ludo Waltman with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ludo Waltman more than expected).

Fields of papers citing papers by Ludo Waltman

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ludo Waltman. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ludo Waltman. The network helps show where Ludo Waltman may publish in the future.

Co-authorship network of co-authors of Ludo Waltman

This figure shows the co-authorship network connecting the top 25 collaborators of Ludo Waltman. A scholar is included among the top collaborators of Ludo Waltman based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ludo Waltman. Ludo Waltman is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
# Work Indexed citations
1 1
2 0
3 1
4 7
5 15
6 47
7 22
8 51
9 1
10
49
11
Quantifying the long-term influence of scientific publications.
1
12
Persistence of journal hierarchy in open access publishing.
3
13 17
14
Use of the journal impact factor for assessing individual articles need not be wrong.
20
15
El Manifiesto de Leiden sobre indicadores de investigación
4
16 19
17
Generalizing the h- and g-indices
112
18 201
19
Appropriate Similarity Measures for Author Cocitation Analysis
53
20
Bibliometric Mapping of the Computational Intelligence Field
235

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

Explore authors with similar magnitude of impact

Rankless by CCL
2026