Publications (128)
Opium in science and society: Numbers
Julian N. Marewski, Lutz Bornmann
Which differences can be expected when two universities in the Leiden Ranking are compared? Some benchmarks for institutional research evaluations
Lutz Bornmann, Wolfgang Glänzel
Core Elements in the Process of Citing Publications: A Conceptual Overview of the Literature
Iman Tahamtan, Lutz Bornmann
Replicability and the public/private divide
Loet Leydesdorff, Caroline Wagner, Lutz Bornmann
Which early works are cited most frequently in climate change research literature? A bibliometric approach based on Reference Publication Year Spectroscopy
Werner Marx, Robin Haunschild, Andreas Thor +1
Networks of reader and country status: An analysis of Mendeley reader statistics
Robin Haunschild, Lutz Bornmann, Loet Leydesdorff
Generating Clustered Journal Maps: An Automated System for Hierarchical Classification
Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner
How many scientific papers are mentioned in policy-related documents? An empirical investigation using Web of Science and Altmetric data
Robin Haunschild, Lutz Bornmann
Methods for the generation of normalized citation impact scores in bibliometrics: Which method best reflects the judgements of experts?
Lutz Bornmann, Werner Marx
Which are the best cities for psychology research worldwide? A map visualizing city ratios of observed and expected numbers of highly-cited papers
Lutz Bornmann, Loet Leydesdorff, Günter Krampen
Betweenness and Diversity in Journal Citation Networks as Measures of Interdisciplinarity -- A Tribute to Eugene Garfield --
Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann
From P100 to P100_: Conception and improvement of a new citation-rank approach in bibliometrics
Lutz Bornmann, Ruediger Mutz
Statistical Significance and Effect Sizes of Differences among Research Universities at the Level of Nations and Worldwide based on the Leiden Rankings
Loet Leydesdorff, Lutz Bornmann, John Mingers
Construction of a Pragmatic Base Line for Journal Classifications and Maps Based on Aggregated Journal-Journal Citation Relations
Loet Leydesdorff, Lutz Bornmann, Ping Zhou
Research misconduct: definitions, manifestations and extent
Lutz Bornmann
The Anna Karenina principle: A concept for the explanation of success in science
Lutz Bornmann, Werner Marx
The validation of (advanced) bibliometric indicators through peer assessments: A comparative study using data from InCites and F1000
Lutz Bornmann, Loet Leydesdorff
Which cities' paper output and citation impact are above expectation in information science? Some improvements of our previous mapping approaches
Lutz Bornmann, Loet Leydesdorff
Do altmetrics point to the broader impact of research? An overview of benefits and disadvantages of altmetrics
Lutz Bornmann
How to calculate the practical significance of citation impact differences? An empirical example from evaluative institutional bibliometrics using adjusted predictions and marginal effects
Lutz Bornmann, Richard Williams
Identifying single influential publications in a research field: New analysis opportunities of the CRExplorer
Andreas Thor, Lutz Bornmann, Werner Marx +1
Referenced Publication Year Spectroscopy (RPYS) and Algorithmic Historiography: The Bibliometric Reconstruction of András Schubert's Åuvre
Loet Leydesdorff, Lutz Bornmann, Jordan Comins +2
Do altmetrics assess societal impact in a comparable way to case studies? An empirical test of the convergent validity of altmetrics based on data from the UK Research Excellence Framework (REF)
Lutz Bornmann, Robin Haunschild, Jonathan Adams
The "Tournaments" Metaphor in Citation Impact Studies: Power-Weakness Ratios (PWR) as a Journal Indicator
Loet Leydesdorff, Wouter de Nooy, Lutz Bornmann
What is the effect of country-specific characteristics on the research performance of scientific institutions? Using multi-level statistical models to rank and map universities and research-focused institutions worldwide
Lutz Bornmann, Moritz Stefaner, Felix de Moya Anegon +1
On the causes of subject-specific citation rates in Web of Science
Werner Marx, Lutz Bornmann
Ranking and mapping of universities and research-focused institutions worldwide based on highly-cited papers: A visualization of results from multi-level models
Lutz Bornmann, Moritz Stefaner, Felix de Moya Anegon +1
Which of the world's institutions employ the most highly cited researchers? An analysis of the data from highlycited.com
Lutz Bornmann, Johann Bauer
The detection of "hot regions" in the geography of science: A visualization approach by using density maps
Lutz Bornmann, Ludo Waltman
How are excellent (highly cited) papers defined in bibliometrics? A quantitative analysis of the literature
Lutz Bornmann
The Journal Impact Factor Should Not Be Discarded
Lutz Bornmann, Alexander I. Pudovkin
The Integrated Impact Indicator (I3) Revisited: A Non-Parametric Alternative to the Journal Impact Factor
Loet Leydesdorff, Lutz Bornmann, Jonathan Adams
The relative influences of government funding and international collaboration on citation impact
Loet Leydesdorff, Lutz Bornmann, Caroline S. Wagner
Latent Markov modelling applied to grant peer review
Lutz Bornmann, Ruediger Mutz, Hans-Dieter Daniel
New approaches for increasing the reliability of the h index research performance measurement
Lutz Bornmann, Ruediger Mutz, Hans-Dieter Daniel
Efficiency of research performance and the glass researcher
Lutz Bornmann, Robin Haunschild
Highly-cited papers in Library and Information Science (LIS): Authors, institutions, and network structures
Johann Bauer, Loet Leydesdorff, Lutz Bornmann
Testing Differences Statistically with the Leiden Ranking
Loet Leydesdorff, Lutz Bornmann
Skewness of citation impact data and covariates of citation distributions: A large-scale empirical analysis based on Web of Science data
Lutz Bornmann, Loet Leydesdorff
Plots for visualizing paper impact and journal impact of single researchers in a single graph
Lutz Bornmann, Robin Haunschild
How well does I3 perform for impact measurement compared to other bibliometric indicators? The convergent validity of several (field-normalized) indicators
Lutz Bornmann, Alexander Tekles, Loet Leydesdorff
Normalization of zero-inflated data: An empirical analysis of a new indicator family and its use with altmetrics data
Lutz Bornmann, Robin Haunschild
How to evaluate individual researchers working in the natural and life sciences meaningfully? A proposal of methods based on percentiles of citations
Lutz Bornmann, Werner Marx
Measuring impact in research evaluations: A thorough discussion of methods for, effects of, and problems with impact measurements
Lutz Bornmann
Is there currently a scientific revolution in scientometrics?
Lutz Bornmann
Field- and time-normalization of data with many zeros: An empirical analysis using citation and Twitter data
Robin Haunschild, Lutz Bornmann
Turning the tables in citation analysis one more time: Principles for comparing sets of documents
Loet Leydesdorff, Lutz Bornmann, Rüdiger Mutz +1
Interdisciplinarity as Diversity in Citation Patterns among Journals: Rao-Stirling Diversity, Relative Variety, and the Gini coefficient
Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann
The negative effects of citing with a national orientation in terms of recognition: national and international citations in natural-sciences papers from Germany, the Netherlands, and the UK
Lutz Bornmann, Jonathan Adams, Loet Leydesdorff
Expected values in percentile indicators
Lutz Bornmann, Robin Haunschild
The normalization of citation counts based on classification systems
Lutz Bornmann, Werner Marx, Andreas Barth
How to identify the roots of broad research topics and fields? The introduction of RPYS sampling using the example of climate change research
Robin Haunschild, Werner Marx, Andreas Thor +1
The Wisdom of Citing Scientists
Lutz Bornmann, Werner Marx
Relative Citation Ratio (RCR): An empirical attempt to study a new field-normalized bibliometric indicator
Lutz Bornmann, Robin Haunschild
Heuristics as conceptual lens for understanding and studying the usage of bibliometrics in research evaluation
Lutz Bornmann, Julian N. Marewski
The new Excellence Indicator in the World Report of the SCImago Institutions Rankings 2011
Lutz Bornmann, Felix de Moya-Anegón, Loet Leydesdorff
Philosophy of science viewed through the lense of "References Publication Years spectrosopy" (RPYS)
K. Brad Wray, Lutz Bornmann
Integrated Impact Indicators (I3) compared with Impact Factors (IFs): An alternative research design with policy implications
Loet Leydesdorff, Lutz Bornmann
The number of linked references of publications in Microsoft Academic in comparison with the Web of Science
Robin Haunschild, Sven E. Hug, Martin P. Brändle +1
New features of CitedReferencesExplorer (CRExplorer)
Andreas Thor, Werner Marx, Loet Leydesdorff +1
Algorithmically generated subject categories based on citation relations: An empirical micro study using papers on overall water splitting
Robin Haunschild, Hermann Schier, Werner Marx +1
Citation impact of papers published from six prolific countries: A national comparison based on InCites data
Lutz Bornmann, Loet Leydesdorff
Field-normalized Impact Factors: A Comparison of Rescaling versus Fractionally Counted IFs
Loet Leydesdorff, Filippo Radicchi, Lutz Bornmann +2
Mapping excellence in the geography of science: An approach based on Scopus data
Lutz Bornmann, Loet Leydesdorff, Christiane Walch-Solimena +1
hα: The Scientist as Chimpanzee or Bonobo
Loet Leydesdorff, Lutz Bornmann, Tobias Opthof
The concordance of field-normalized scores based on Web of Science and Microsoft Academic data: A case study in computer sciences
Thomas Scheidsteger, Robin Haunschild, Sven Hug +1
Professional and Citizen Bibliometrics: Complementarities and ambivalences in the development and use of indicators
Loet Leydesdorff, Paul Wouters, Lutz Bornmann
Can the Journal Impact Factor Be Used as a Criterion for the Selection of Junior Researchers? A Large-Scale Empirical Study Based on ResearcherID Data
Lutz Bornmann, Richard Williams
Which percentile-based approach should be preferred for calculating normalized citation impact values? An empirical comparison of five approaches including a newly developed citation-rank approach (P100)
Lutz Bornmann, Loet Leydesdorff, Jian Wang
A Meta-evaluation of Scientific Research Proposals: Different Ways of Comparing Rejected to Awarded Applications
Lutz Bornmann, Loet Leydesdorff, Peter van den Besselaar
Tracing the origin of a scientific legend by Reference Publication Year Spectroscopy (RPYS): the legend of the Darwin finches
Werner Marx, Lutz Bornmann
The Operationalization of "Fields" as WoS Subject Categories (WCs) in Evaluative Bibliometrics: The cases of "Library and Information Science" and "Science & Technology Studies"
Loet Leydesdorff, Lutz Bornmann
Alternative metrics in scientometrics: A meta-analysis of research into three altmetrics
Lutz Bornmann
Sampling Issues in Bibliometric Analysis
Richard Williams, Lutz Bornmann
Detecting the historical roots of tribology research: a bibliometric analysis
Bakthavachalam Elango, Lutz Bornmann, Govindaraju Kannan
Allegation of scientific misconduct increases Twitter attention
Lutz Bornmann, Robin Haunschild
Excellence networks in science: A Web-based application based on Bayesian multilevel logistic regression (BMLR) for the identification of institutions collaborating successfully
Lutz Bornmann, Moritz Stefaner, Felix de Moya Anegon +1
Climate Change Research in View of Bibliometrics
Robin Haunschild, Lutz Bornmann, Werner Marx
Referenced Publication Years Spectroscopy applied to iMetrics: Scientometrics, Journal of Informetrics, and a relevant subset of JASIST
Loet Leydesdorff, Lutz Bornmann, Werner Marx +1
Citations: Indicators of Quality? The Impact Fallacy
Loet Leydesdorff, Lutz Bornmann, Jordan Comins +1
Which are the influential publications in the Web of Science subject categories over a long period of time? CRExplorer software used for big-data analyses in bibliometrics
Andreas Thor, Lutz Bornmann, Robin Haunschild +1
The geography of references in elite articles: What countries contribute to the archives of knowledge
Lutz Bornmann, Caroline Wagner, Loet Leydesdorff
Measuring field-normalized impact of papers on specific societal groups: An altmetrics study based on Mendeley data
Lutz Bornmann, Robin Haunschild
How to analyse percentile impact data meaningfully in bibliometrics: The statistical analysis of distributions, percentile rank classes and top-cited papers
Lutz Bornmann
h-index Research in Scientometrics: A Summary
Lutz Bornmann
BRICS countries and scientific excellence: A bibliometric analysis of most frequently-cited papers
Lutz Bornmann, Caroline Wagner, Loet Leydesdorff
Citation Environment of Angewandte Chemie
Lutz Bornmann, Loet Leydesdorff, Werner Marx
Mapping (USPTO) Patent Data using Overlays to Google Maps
Loet Leydesdorff, Lutz Bornmann
On the origins and the historical roots of the Higgs boson research from a bibliometric perspective
Andreas Barth, Werner Marx, Lutz Bornmann +1
The European Union, China, and the United States in the Top-1% and Top-10% Layers of Most-Frequently-Cited Publications: Competition and Collaborations
Loet Leydesdorff, Caroline S. Wagner, Lutz Bornmann
Recent Developments in China-U.S. Cooperation in Science
Caroline Wagner, Loet Leydesdorff, Lutz Bornmann
Usefulness of altmetrics for measuring the broader impact of research: A case study using data from PLOS (altmetrics) and F1000Prime (paper tags)
Lutz Bornmann
Do altmetrics correlate with the quality of papers? A large-scale empirical study based on F1000Prime data
Lutz Bornmann, Robin Haunschild
Introducing CitedReferencesExplorer (CRExplorer): A program for Reference Publication Year Spectroscopy with Cited References Standardization
Andreas Thor, Werner Marx, Loet Leydesdorff +1
The use of percentiles and percentile rank classes in the analysis of bibliometric data: Opportunities and limits
Lutz Bornmann, Loet Leydesdorff, Ruediger Mutz
Cited References and Medical Subject Headings (MeSH) as Two Different Knowledge Representations: Clustering and Mappings at the Paper Level
Loet Leydesdorff, Jordan A. Comins, Aaron A. Sorensen +2
Gender differences in grant peer review: A meta-analysis
Lutz Bornmann, Ruediger Mutz, Hans-Dieter Daniel
Visualizing the context of citations referencing papers published by Eugene Garfield: A new type of keyword co-occurrence analysis
Lutz Bornmann, Robin Haunschild, Sven E. Hug
A macro level scientometric analysis of world tribology research output (1998 - 2012)
Bakthavachalam Elango, Periyaswamy Rajendran, Lutz Bornmann
Policy documents as sources for measuring societal impact: How often is climate change research mentioned in policy-related documents?
Lutz Bornmann, Robin Haunschild, Werner Marx