Concentration of the Most-Cited Papers in the Scientific Literature: Analysis of Journal Ecosystems
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{"title"=>"Concentration of the most-cited papers in the scientific literature: Analysis of journal ecosystems", "type"=>"journal", "authors"=>[{"first_name"=>"John P A", "last_name"=>"Ioannidis"}], "year"=>2006, "source"=>"PLoS ONE", "identifiers"=>{"isbn"=>"1932-6203", "doi"=>"10.1371/journal.pone.0000005", "scopus"=>"2-s2.0-34748828723", "issn"=>"19326203", "pmid"=>"17183679"}, "id"=>"be11ca87-9546-3229-93a3-23e0ff0bb3a9", "abstract"=>"BACKGROUND: A minority of scientific journals publishes the majority of scientific papers and receives the majority of citations. The extent of concentration of the most influential articles is less well known.\\n\\nMETHODS/PRINCIPAL FINDINGS: The 100 most-cited papers in the last decade in each of 21 scientific fields were analyzed; fields were considered as ecosystems and their \"species\" (journal) diversity was evaluated. Only 9% of journals in Journal Citation Reports had published at least one such paper. Among this 9%, half of them had published only one such paper. The number of journals that had published a larger number of most-cited papers decreased exponentially according to a Lotka law. Except for three scientific fields, six journals accounted for 53 to 94 of the 100 most-cited papers in their field. With increasing average number of citations per paper (citation density) in a scientific field, concentration of the most-cited papers in a few journals became even more prominent (p<0.001). Concentration was unrelated to the number of papers published or number of journals available in a scientific field. Multidisciplinary journals accounted for 24% of all most-cited papers, with large variability across fields. The concentration of most-cited papers in multidisciplinary journals was most prominent in fields with high citation density (correlation coefficient 0.70, p<0.001). Multidisciplinary journals had published fewer than eight of the 100 most-cited papers in eight scientific fields (none in two fields). Journals concentrating most-cited original articles often differed from those concentrating most-cited reviews. The concentration of the most-influential papers was stronger than the already prominent concentration of papers published and citations received.\\n\\nCONCLUSIONS: Despite a plethora of available journals, the most influential papers are extremely concentrated in few journals, especially in fields with high citation density. Existing multidisciplinary journals publish selectively most-cited papers from fields with high citation density.", "link"=>"http://www.mendeley.com/research/concentration-mostcited-papers-scientific-literature-analysis-journal-ecosystems", "reader_count"=>126, "reader_count_by_academic_status"=>{"Lecturer > Senior Lecturer"=>1, "Lecturer"=>2, "Librarian"=>6, "Student > Bachelor"=>7, "Researcher"=>33, "Other"=>6, "Professor > Associate Professor"=>8, "Student > Master"=>11, "Professor"=>12, "Student > Postgraduate"=>9, "Student > Ph. D. Student"=>25, "Student > Doctoral Student"=>6}, "reader_count_by_user_role"=>{"Lecturer > Senior Lecturer"=>1, "Lecturer"=>2, "Librarian"=>6, "Student > Bachelor"=>7, "Researcher"=>33, "Other"=>6, "Professor > Associate Professor"=>8, "Student > Master"=>11, "Professor"=>12, "Student > Postgraduate"=>9, "Student > Ph. D. Student"=>25, "Student > Doctoral Student"=>6}, "reader_count_by_subject_area"=>{"Agricultural and Biological Sciences"=>43, "Arts and Humanities"=>4, "Business, Management and Accounting"=>6, "Chemistry"=>3, "Computer Science"=>5, "Earth and Planetary Sciences"=>1, "Economics, Econometrics and Finance"=>5, "Environmental Science"=>10, "Engineering"=>2, "Biochemistry, Genetics and Molecular Biology"=>2, "Medicine and Dentistry"=>17, "Mathematics"=>2, "Psychology"=>8, "Linguistics"=>2, "Physics and Astronomy"=>4, "Social Sciences"=>11, "Neuroscience"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>17}, "Social Sciences"=>{"Social Sciences"=>11}, "Psychology"=>{"Psychology"=>8}, "Physics and Astronomy"=>{"Physics and Astronomy"=>4}, "Mathematics"=>{"Mathematics"=>2}, "Environmental Science"=>{"Environmental Science"=>10}, "Arts and Humanities"=>{"Arts and Humanities"=>4}, "Engineering"=>{"Engineering"=>2}, "Chemistry"=>{"Chemistry"=>3}, "Neuroscience"=>{"Neuroscience"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>1}, "Economics, Econometrics and Finance"=>{"Economics, Econometrics and Finance"=>5}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>43}, "Computer Science"=>{"Computer Science"=>5}, "Business, Management and Accounting"=>{"Business, Management and Accounting"=>6}, "Linguistics"=>{"Linguistics"=>2}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>2}}, "reader_count_by_country"=>{"United States"=>12, "Taiwan"=>1, "Greece"=>1, "Spain"=>4, "Lithuania"=>1, "Austria"=>1, "Italy"=>2, "United Kingdom"=>5, "France"=>1, "Mexico"=>3, "Canada"=>3, "Brazil"=>6, "Belgium"=>1, "South Africa"=>2, "Germany"=>1, "Netherlands"=>2, "New Zealand"=>1, "Sweden"=>1}, "group_count"=>4}

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Figshare

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  • {"files"=>["https://ndownloader.figshare.com/files/954636"], "description"=>"<p>Relationship between the average number of citations in the field (citation density) and extent of concentration of the most-cited papers in multidisciplinary journals.</p>", "links"=>[], "tags"=>["citations", "most-cited", "papers", "multidisciplinary"], "article_id"=>624930, "categories"=>["Science Policy", "Medicine", "Ecology"], "users"=>["John P. A. Ioannidis"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000005.g003", "stats"=>{"downloads"=>3, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Relationship_between_the_average_number_of_citations_in_the_field_citation_density_and_extent_of_concentration_of_the_most_cited_papers_in_multidisciplinary_journals_/624930", "title"=>"Relationship between the average number of citations in the field (citation density) and extent of concentration of the most-cited papers in multidisciplinary journals.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-21 13:00:08"}
  • {"files"=>["https://ndownloader.figshare.com/files/954580"], "description"=>"<p>The diversity of journals publishing the 100 most-cited papers in a scientific field (here expressed by Hurlbert's PIE) is negatively related with the average number of citations per paper in the field (citation density).</p>", "links"=>[], "tags"=>["journals", "publishing", "100", "most-cited", "papers", "negatively", "citations"], "article_id"=>624871, "categories"=>["Science Policy", "Medicine", "Ecology"], "users"=>["John P. A. Ioannidis"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0000005.g002", "stats"=>{"downloads"=>2, "page_views"=>11, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_diversity_of_journals_publishing_the_100_most_cited_papers_in_a_scientific_field_here_expressed_by_Hurlbert_s_PIE_is_negatively_related_with_the_average_number_of_citations_per_paper_in_the_field_citation_density_/624871", "title"=>"The diversity of journals publishing the 100 most-cited papers in a scientific field (here expressed by Hurlbert's PIE) is negatively related with the average number of citations per paper in the field (citation density).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2013-02-21 12:59:44"}

PMC Usage Stats | Further Information

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Relative Metric

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