Ludo Waltman

Q: What Schools Are Affiliated With Ludo Waltman

Ludo Waltman is affiliated with the following schools: Erasmus University Rotterdam, Leiden University

Ludo Waltman's AcademicInfluence.com Rankings

Ludo Waltman

Computer Science

#5691

Historical Rank

Information Systems

#18

Historical Rank

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Computer Science

Ludo Waltman's Degrees

PhD Mathematics Leiden University
Masters Mathematics Leiden University
Bachelors Mathematics Leiden University

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Ludo Waltman's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Software survey: VOSviewer, a computer program for bibliometric mapping (2009) (6858)
From Louvain to Leiden: guaranteeing well-connected communities (2018) (1594)
Bibliometrics: The Leiden Manifesto for research metrics (2015) (1345)
Visualizing Bibliometric Networks (2014) (1200)
A unified approach to mapping and clustering of bibliometric networks (2010) (1152)
Citation-based clustering of publications using CitNetExplorer and VOSviewer (2017) (802)
A review of the literature on citation impact indicators (2015) (758)
The Science of Science (2018) (696)
A smart local moving algorithm for large-scale modularity-based community detection (2013) (664)
Constructing bibliometric networks: A comparison between full and fractional counting (2016) (554)
A comparison of two techniques for bibliometric mapping: Multidimensional scaling and VOS (2010) (511)
Text mining and visualization using VOSviewer (2011) (489)
A new methodology for constructing a publication-level classification system of science (2012) (464)
How to normalize cooccurrence data? An analysis of some well-known similarity measures (2009) (418)
CitNetExplorer: A new software tool for analyzing and visualizing citation networks (2014) (410)
Vos: A New Method for Visualizing Similarities between Objects (2006) (384)
The Leiden ranking 2011/2012: Data collection, indicators, and interpretation (2012) (374)
Towards a new crown indicator: Some theoretical considerations (2010) (368)
The Leiden Manifesto for research metrics (2015) (367)
How to Normalize Co-Occurrence Data? An Analysis of Some Well-Known Similarity Measures (2009) (326)
The inconsistency of the h-index (2011) (295)
Vosviewer: A Computer Program for Bibliometric Mapping (2009) (236)
Large-scale analysis of the accuracy of the journal classification systems of Web of Science and Scopus (2015) (217)
Towards a new crown indicator: an empirical analysis (2010) (216)
Automatic term identification for bibliometric mapping (2008) (208)
Citation Analysis May Severely Underestimate the Impact of Clinical Research as Compared to Basic Research (2012) (207)
Large-scale comparison of bibliographic data sources: Scopus, Web of Science, Dimensions, Crossref, and Microsoft Academic (2020) (203)
Bibliometric Mapping of the Computational Intelligence Field (2007) (191)
Field-Normalized Citation Impact Indicators and the Choice of an Appropriate Counting Method (2015) (184)
Some modifications to the SNIP journal impact indicator (2012) (165)
An empirical analysis of the use of alphabetical authorship in scientific publishing (2012) (155)
Generalizing the H- and G-Indices (2008) (145)
On the calculation of percentile-based bibliometric indicators (2012) (136)
Computational and Game-Theoretic Approaches for Modeling Bounded Rationality (2007) (129)
F1000 Recommendations as a Potential New Data Source for Research Evaluation: A Comparison With Citations (2014) (128)
Source normalized indicators of citation impact: an overview of different approaches and an empirical comparison (2012) (120)
Field-normalized citation impact indicators using algorithmically constructed classification systems of science (2015) (113)
A systematic empirical comparison of different approaches for normalizing citation impact indicators (2013) (110)
Rivals for the crown: Reply to Opthof and Leydesdorff (2010) (108)
Clustering Scientific Publications Based on Citation Relations: A Systematic Comparison of Different Methods (2015) (98)
Q-learning agents in a Cournot oligopoly model (2008) (92)
Predicting the long-term citation impact of recent publications (2015) (92)
Characterizing in-text citations in scientific articles: A large-scale analysis (2017) (88)
Mapping patient safety: a large-scale literature review using bibliometric visualisation techniques (2014) (86)
Globalisation of science in kilometres (2011) (78)
Universality of citation distributions revisited (2011) (76)
A Large-Scale Analysis of Impact Factor Biased Journal Self-Citations (2016) (70)
A scientometric overview of CORD-19 (2020) (70)
Visualizing the Computational Intelligence Field (2006) (69)
Bibliometric Mapping of the Computational Intelligence Field Nees (2007) (69)
The detection of "hot regions" in the geography of science: A visualization approach by using density maps (2011) (68)
Counting publications and citations: Is more always better? (2013) (57)
A recursive field-normalized bibliometric performance indicator: an application to the field of library and information science (2011) (55)
Appropriate similarity measures for author co-citation analysis (2008) (47)
Rethinking impact factors: better ways to judge a journal (2019) (47)
Visualizing the computational intelligence field [Application Notes] (2006) (45)
The relation between Eigenfactor, audience factor, and influence weight (2010) (44)
Systematic analysis of agreement between metrics and peer review in the UK REF (2018) (44)
Accuracy of citation data in Web of Science and Scopus (2019) (44)
A principled methodology for comparing relatedness measures for clustering publications (2019) (43)
Maximum likelihood parameter estimation in probabilistic fuzzy classifiers (2005) (36)
PageRank-Related Methods for Analyzing Citation Networks (2014) (36)
Field normalization of scientometric indicators (2018) (35)
A Taxonomy of Bibliometric Performance Indicators Based on the Property of Consistency (2009) (35)
Appropriate Similarity Measures for Author Cocitation Analysis (2007) (33)
Use of the journal impact factor for assessing individual articles need not be wrong (2017) (33)
A Novel Algorithm for Visualizing Concept Associations (2005) (30)
On the correlation between bibliometric indicators and peer review: reply to Opthof and Leydesdorff (2011) (28)
The correlation between citation-based and expert-based assessments of publication channels: SNIP and SJR vs. Norwegian quality assessments (2014) (28)
The detection of (2011) (27)
Economic modeling using evolutionary algorithms: the effect of a binary encoding of strategies (2009) (25)
Some Comments on the Question Whether Co-Occurrence Data Should Be Normalized (2007) (25)
The Closer the Better: Similarity of Publication Pairs at Different Cocitation Levels (2017) (24)
Systematic Retrieval of Scientific Literature based on Citation Relations: Introducing the CitNetExplorer Tool (2014) (23)
A multidimensional framework for characterizing the citation impact of scientific publications (2019) (22)
Relations between the shape of a size-frequency distribution and the shape of a rank-frequency distribution (2011) (21)
The elephant in the room: The problem of quantifying productivity in evaluative scientometrics (2016) (20)
Exploring the Relationship between the Engineering and Physical Sciences and the Health and Life Sciences by Advanced Bibliometric Methods (2014) (20)
A smart local moving algorithm for large-scale modularity-based community detection (2013) (20)
Use of the journal impact factor for assessing individual articles: Statistically flawed or not? (2021) (19)
Some Comments on Egghe’S Derivation of the Impact Factor Distribution (2009) (19)
Use of the journal impact factor for assessing individual articles need not be statistically wrong. (2017) (19)
Large-scale comparison of bibliographic data sources: Web of Science, Scopus, Dimensions, and Crossref (2019) (18)
The Metric Tide: Literature Review (2015) (18)
Fuzzy histograms: A Statistical Analysis (2005) (18)
Supplementary Report I to the Independent Review of the Role of Metrics in Research Assessment and Management (2015) (16)
Topic identification challenge (2017) (16)
Some Limitations of the H Index: A Commentary on Ruscio and Colleagues' Analysis of Bibliometric Indices (2012) (15)
Special issue on bibliographic data sources (2020) (14)
Patterns in citation context: the case of the field of scientometrics (2018) (14)
F1000 recommendations as a new data source for research evaluation: A comparison with citations (2013) (14)
Research collaboration and the expanding science grid: Measuring globalization processes worldwide (2012) (13)
A Simple Alternative to the H-Index (2009) (13)
Open Data: the researcher perspective - survey and case studies (2017) (13)
Gender differences in scientific careers: A large-scale bibliometric analysis (2021) (13)
A Theoretical Analysis of Cooperative Behavior in Multi-agent Q-learning (2006) (12)
A general source-normalized approach to bibliometric research performance assessment (2010) (11)
Investigating disagreement in the scientific literature (2021) (11)
Collaborations span 1,553 kilometres (2011) (11)
Visualizing the WCCI 2006 Knowledge Domain (2006) (11)
Intermediacy of publications (2018) (10)
A Longitudinal Analysis of Publications on Maternal Mortality. (2015) (10)
Special section on performance-based research funding systems (2017) (10)
Conceptual difficulties in the use of statistical inference in citation analysis (2016) (10)
Algorithmic labeling in hierarchical classifications of publications: Evaluation of bibliographic fields and term weighting approaches (2020) (9)
Measuring disagreement in science (2019) (9)
Robust Evolutionary Algorithm Design for Socio-Economic Simulation: Some Comments (2009) (9)
Opening science: The rebirth of a scholarly journal (2020) (9)
Supporting priority setting in science using research funding landscapes (2019) (8)
Some comments on the journal weighted impact factor proposed by Habibzadeh and Yadollahie (2008) (8)
A Theoretical Analysis of Probabilistic Fuzzy Systems (2005) (8)
A large-scale bibliometric analysis of global climate change research between 2001 and 2018 (2021) (8)
Responsible metrics: One size doesn’t fit all (2018) (8)
An Interactive Visual Tool for Scientific Literature Search: Proposal and Algorithmic Specification (2019) (8)
Arrival Processes for Vessels in a Port Simulation (2003) (6)
Rethinking Impact Factors: New Pathways in Journal Metrics (2019) (6)
The relationship between publication volume of biomedical research and burden of disease (2019) (6)
Innovating peer review, reconfiguring scholarly communication: an analytical overview of ongoing peer review innovation activities (2022) (6)
Decision letter for "A multidimensional perspective on the citation impact of scientific publications" (2019) (5)
Special section on size-independent indicators in citation analysis (2016) (5)
Best Books (1898) (4)
An Evolutionary Model of Price Competition Among Spatially Distributed Firms (2011) (4)
Innovations in peer review in scholarly publishing: a meta-summary. (2022) (3)
Exploring the Similarity of Articles Co-cited at Different Levels (2017) (3)
Mapping the Management Discipline - A Bibliometric and Qualitative Synthesis (2014) (3)
Globalization of public-private research in worldwide science: co-publication trends and geographical distances between research partners (2011) (3)
A mathematical analysis of the long-run behavior of genetic algorithms for social modeling (2009) (3)
Exploration of Reproducibility Issues in Scientometric Research Part 2: Conceptual Reproducibility (2018) (3)
Persistence of journal hierarchy in open access publishing (2019) (3)
Understanding gender differences in science requires a diversity of perspectives, including controversial ones (2021) (3)
A VICORE Architecture for Intelligent Knowledge Management (2004) (3)
Exploration of reproducibility issues in scientometric research Part 1: Direct reproducibility (2018) (3)
Author response for "A multidimensional perspective on the citation impact of scientific publications" (2020) (2)
Funding COVID-19 research: Insights from an exploratory analysis using open data infrastructures (2022) (2)
Quantifying the long-term influence of scientific publications (2019) (2)
Causal foundations of bias, disparity and fairness (2022) (2)
Retraction of Predatory publishing in Scopus: evidence on cross-country differences lacks justification (2022) (2)
Exploration of reproducibility issues in scientometric research (2018) (2)
Open Abstracts: Where are we? (2020) (2)
Browsing Citation Clusters for Academic Literature Search: A Simulation Study with Systematic Reviews (2020) (2)
An overview of innovations in the external peer review of journal manuscripts. (2023) (2)
Reference behavior in the full text of scientific articles: A large-scale analysis (2017) (1)
How to improve scientific peer review: Four schools of thought (2023) (1)
International Conference of the International Society for Scientometrics and Informetrics a Simple Alternative to the H-index Multi-and Inter- Disciplinarity in Medical and Veterinary Literature: Approaches and Assertions Science in a Changing Europe: East vs. West National Scientific Profiles by Su (1)
A recursive field-normalized (2011) (1)
Impact factors: Is the Nature Index at odds with DORA? (2017) (1)
UvA-DARE (Digital Academic Repository) A scientometric overview of CORD-19 (2020) (1)
Analyzing the activities of visitors of the Leiden Ranking website (2018) (1)
Improving the evaluation of worldwide biomedical research output: classification method and standardised bibliometric indicators by disease (2018) (1)
Systematic analysis of agreement between metrics and peer review in the UK REF (2019) (1)
Bibliometric analysis of social science research into global environmental change (2013) (1)
Board Members to predict the potential impact of scientific journals (2013) (1)
Variations in citation practices across the scientific landscape: Analysis based on a large full-text corpus (2019) (1)
Special section on statistical inference in citation analysis (2016) (1)
An Open Knowledge Base for the Netherlands: Report of a Community Workshop (2021) (1)
On the visualization of the soft computing knowledge domain (2006) (0)
Introducing the Initiative for Open Abstracts (I4OA) (2020) (0)
Review of "Recommendations from the RISRS Report: Reducing the Inadvertent Spread of Retracted Science" (2021) (0)
Scholarly Publishing and Peer-review in Times of Crisis: An Overview (2022) (0)
An Evolutionary Model of Price Competition Among Spatially Distributed Firms (2013) (0)
Peer review uncertainty at the institutional level (2018) (0)
Open research information for responsible research assessment (2021) (0)
Source normalized indicators of citation impact: an overview of different approaches and an empirical comparison (2012) (0)
On the proper understanding of the limiting behavior of generalizations of the h- and g-indices (2009) (0)
Globalization of science: Geographical distance measurements of research collaboration (2013) (0)
Author response: Investigating disagreement in the scientific literature (2021) (0)
Using full-text data to create improved term maps (2017) (0)
Review of "Global research trends in stem cells for tendon from 1991 to 2020: a bibliometric and visualized study" (2021) (0)
To Preprint or Not to Preprint: Experience and Attitudes of Researchers Worldwide (2023) (0)
Message from the new Editor-in-Chief (2015) (0)
Review of "One-Year In: COVID-19 Research at the International Level in CORD-19 Data" (2021) (0)
Peer Review #3 of "A systematic metadata harvesting workflow for analysing scientific networks (v0.2)" (2021) (0)
A mathematical analysis of the long-run behavior of genetic algorithms for social modeling (2012) (0)
Monitoring open access publishing of NWO funded research (2021) (0)
The challenges of scientometric studies of predatory publishing (2022) (0)
Supplementary material from "Intermediacy of publications" (2019) (0)
Peer Review #3 of "A systematic metadata harvesting workflow for analysing scientific networks (v0.1)" (2021) (0)
Optimal specialization: Theory development and testing amongst management scholars (2012) (0)
Responsible research assessment requires open scholarly metadata (2020) (0)
Academic information retrieval using citation clusters: in-depth evaluation based on systematic reviews (2022) (0)
Rethinking impact factors: better ways to judge a journal (2019) (0)
Correction to ‘Intermediacy of publications’ (2020) (0)

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Other Resources About Ludo Waltman

www.cwts.nl

What Schools Are Affiliated With Ludo Waltman?

Ludo Waltman is affiliated with the following schools:

Ludo Waltman's Academic­Influence.com Rankings