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Per Ahlgren

Royal Institute of Technology

19H-index
84Paper Count
1.9KCitation Count
Published Papers 24
Publication Date
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Normalization of direct citations for clustering in publication-level networks: evaluation of six approaches
errSCIENTOMETRICS
IF3.5
err2024-01-23
err1
errOAAI
errSjogarde, Peter; Ahlgren, Per
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BATTERY 2030+and its Research Roadmap: A Bibliometric Analysis
errCHEMSUSCHEM
IF6.6
err2023-08-14
err0
errOAAI
errAhlgren, Per; Jeppsson, Tobias; Stenberg, Esa; Berg, Erik; Edstrom, Kristina
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The link between ethnic diversity and scientific impact: the mediating effect of novelty and audience diversity
errSCIENTOMETRICS
IF3.5
err2021-06-24
err9
errOAAI
errDing, Jielan; Shen, Zhesi; Ahlgren, Per; Jeppsson, Tobias; Minguillo, David; Lyhagen, Johan
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Uncertainty and the ranking of economics journals
errSCIENTOMETRICS
IF3.5
err2020-09-14
err7
errOAAI
errLyhagen, Johan; Ahlgren, Per
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Enhancing direct citations: A comparison of relatedness measures for community detection in a large set of PubMed publications
errQUANTITATIVE SCIENCE STUDIES
IF3.5
err2020-03-10
err21
errOAAI
errAhlgren, Per; Chen, Yunwei; Colliander, Cristian; Van Eck, Nees Jan
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Granularity of algorithmically constructed publication-level classifications of research publications: Identification of specialties
errQUANTITATIVE SCIENCE STUDIES
IF3.5
err2020-02-01
err18
errOAAI
errSjogarde, Peter; Ahlgren, Per
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errSave
Comparison of publication-level approaches to ex-post citation normalization
errSCIENTOMETRICS
IF3.5
err2019-05-17
err6
errOAAI
errColliander, Cristian; Ahlgren, Per
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Disciplinary structures in Nature, Science and PNAS: journal and country levels
errSCIENTOMETRICS
IF3.5
err2018-06-26
err10
PREAI
errDing, Jielan; Ahlgren, Per; Yang, Liying; Yue, Ting
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Reply to 'Comment on Using multi-level frontiers in DEA models to grade countries/territories by G.-I. Yang et al. [Journal of Informetrics 10(1) (2016), 238-253]'
errJOURNAL OF INFORMETRICS
IF3.5
err2017-08-01
err0
PREAI
errYang, Guoliang; Ahlgren, Per; Yang, Liying; Rousseau, Ronald; Ding, Jielan
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Evolution of three Nobel Prize themes and a Nobel snub theme in chemistry: a bibliometric study with focus on international collaboration
errSCIENTOMETRICS
IF3.5
err2017-04-26
err10
errOAAI
errTong, Sichao; Ahlgren, Per
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Using multi-level frontiers in DEA models to grade countries/territories
errJOURNAL OF INFORMETRICS
IF3.5
err2016-02-01
err13
PREAI
errYang, Guoliang; Ahlgren, Per; Yang, Liying; Rousseau, Ronald; Ding, Jielan
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Bibliometric analysis of two subdomains in philosophy: free will and sorites
errSCIENTOMETRICS
IF3.5
err2015-02-15
err15
PREAI
errAhlgren, Per; Pagin, Peter; Persson, Olle; Svedberg, Maria
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The correlation between citation-based and expert-based assessments of publication channels: SNIP and SJR vs. Norwegian quality assessments
errJOURNAL OF INFORMETRICS
IF3.5
err2014-10-01
err32
PREAI
errAhlgren, Per; Waltman, Ludo
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Geographical distance in bibliometric relations within epistemic communities
errSCIENTOMETRICS
IF3.5
err2012-07-26
err15
PREAI
errAhlgren, Per; Persson, Olle; Tijssen, Robert
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Field normalized citation rates, field normalized journal impact and Norwegian weights for allocation of university research funds
errSCIENTOMETRICS
IF3.5
err2012-02-02
err29
PREAI
errAhlgren, Per; Colliander, Cristian; Persson, Olle
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Experimental comparison of first and second-order similarities in a scientometric context
errSCIENTOMETRICS
IF3.5
err2011-09-04
err20
PREAI
errColliander, Cristian; Ahlgren, Per
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The effects and their stability of field normalization baseline on relative performance with respect to citation impact: A case study of 20 natural science departments
errJOURNAL OF INFORMETRICS
IF3.5
err2011-01-01
err31
PREAI
errColliander, Cristian; Ahlgren, Per
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errSave
Document-document similarity approaches and science mapping: Experimental comparison of five approaches
errJOURNAL OF INFORMETRICS
IF3.5
err2009-01-01
err82
PREAI
errAhlgren, Per; Colliander, Cristian
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errSave
Bibliographic coupling, common abstract stems and clustering: A comparison of two document-document similarity approaches in the context of science mapping
errSCIENTOMETRICS
IF3.5
err2008-06-04
err39
PREAI
errAhlgren, Per; Jarneving, Bo
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Evaluation of retrieval effectiveness with incomplete relevance data:: Theoretical and experimental comparison of three measures
errINFORMATION PROCESSING & MANAGEMENT
IF6.9
err2008-01-01
err5
errOAAI
errAhlgren, Per; Gronqvist, Leif
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Research Directions

The data has not been retrieved yet.
Co-authors
Cooperation Journals
K
Kristina Edström
H-index: 81 · Papers: 858
L
Ludo Waltman
H-index: 55 · Papers: 383
R
Ronald Rousseau
H-index: 52 · Papers: 427
N
Nees Jan van Eck
H-index: 49 · Papers: 255
E
Erik J. Berg
H-index: 42 · Papers: 166
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