Design and Update of a Classification System: The UCSD Map of Science
Identifieur interne : 000339 ( Ncbi/Merge ); précédent : 000338; suivant : 000340Design and Update of a Classification System: The UCSD Map of Science
Auteurs : Katy Börner [États-Unis, Pays-Bas] ; Richard Klavans [États-Unis] ; Michael Patek [États-Unis] ; Angela M. Zoss [États-Unis] ; Joseph R. Biberstine [États-Unis] ; Robert P. Light [États-Unis] ; Vincent Larivière [États-Unis, Canada] ; Kevin W. Boyack [États-Unis]Source :
- PLoS ONE [ 1932-6203 ] ; 2012.
English descriptors
- KwdEn :
- MESH :
- classification : Humanities, Natural Science Disciplines, Social Sciences.
- statistics & numerical data : Databases, Bibliographic.
- trends : Humanities, Natural Science Disciplines, Social Sciences.
- Bibliometrics, Humans, Internet, Research Design.
Abstract
Global maps of science can be used as a reference system to chart career trajectories, the location of emerging research frontiers, or the expertise profiles of institutes or nations. This paper details data preparation, analysis, and layout performed when designing and subsequently updating the UCSD map of science and classification system. The original classification and map use 7.2 million papers and their references from Elsevier’s Scopus (about 15,000 source titles, 2001–2005) and Thomson Reuters’ Web of Science (WoS) Science, Social Science, Arts & Humanities Citation Indexes (about 9,000 source titles, 2001–2004)–about 16,000 unique source titles. The updated map and classification adds six years (2005–2010) of WoS data and three years (2006–2008) from Scopus to the existing category structure–increasing the number of source titles to about 25,000. To our knowledge, this is the first time that a widely used map of science was updated. A comparison of the original 5-year and the new 10-year maps and classification system show (i) an increase in the total number of journals that can be mapped by 9,409 journals (social sciences had a 80% increase, humanities a 119% increase, medical (32%) and natural science (74%)), (ii) a simplification of the map by assigning all but five highly interdisciplinary journals to exactly one discipline, (iii) a more even distribution of journals over the 554 subdisciplines and 13 disciplines when calculating the coefficient of variation, and (iv) a better reflection of journal clusters when compared with paper-level citation data. When evaluating the map with a listing of desirable features for maps of science, the updated map is shown to have higher mapping accuracy, easier understandability as fewer journals are multiply classified, and higher usability for the generation of data overlays, among others.
Url:
DOI: 10.1371/journal.pone.0039464
PubMed: 22808037
PubMed Central: 3395643
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PMC:3395643Le document en format XML
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<front><div type="abstract" xml:lang="en"><p>Global maps of science can be used as a reference system to chart career trajectories, the location of emerging research frontiers, or the expertise profiles of institutes or nations. This paper details data preparation, analysis, and layout performed when designing and subsequently updating the UCSD map of science and classification system. The original classification and map use 7.2 million papers and their references from Elsevier’s Scopus (about 15,000 source titles, 2001–2005) and Thomson Reuters’ Web of Science (WoS) Science, Social Science, Arts & Humanities Citation Indexes (about 9,000 source titles, 2001–2004)–about 16,000 unique source titles. The updated map and classification adds six years (2005–2010) of WoS data and three years (2006–2008) from Scopus to the existing category structure–increasing the number of source titles to about 25,000. To our knowledge, this is the first time that a widely used map of science was updated. A comparison of the original 5-year and the new 10-year maps and classification system show (i) an increase in the total number of journals that can be mapped by 9,409 journals (social sciences had a 80% increase, humanities a 119% increase, medical (32%) and natural science (74%)), (ii) a simplification of the map by assigning all but five highly interdisciplinary journals to exactly one discipline, (iii) a more even distribution of journals over the 554 subdisciplines and 13 disciplines when calculating the coefficient of variation, and (iv) a better reflection of journal clusters when compared with paper-level citation data. When evaluating the map with a listing of desirable features for maps of science, the updated map is shown to have higher mapping accuracy, easier understandability as fewer journals are multiply classified, and higher usability for the generation of data overlays, among others.</p>
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<series><title level="j">PLoS ONE</title>
<idno type="eISSN">1932-6203</idno>
<imprint><date when="2012">2012</date>
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<front><div type="abstract" xml:lang="en"><p>Global maps of science can be used as a reference system to chart career trajectories, the location of emerging research frontiers, or the expertise profiles of institutes or nations. This paper details data preparation, analysis, and layout performed when designing and subsequently updating the UCSD map of science and classification system. The original classification and map use 7.2 million papers and their references from Elsevier’s Scopus (about 15,000 source titles, 2001–2005) and Thomson Reuters’ Web of Science (WoS) Science, Social Science, Arts & Humanities Citation Indexes (about 9,000 source titles, 2001–2004)–about 16,000 unique source titles. The updated map and classification adds six years (2005–2010) of WoS data and three years (2006–2008) from Scopus to the existing category structure–increasing the number of source titles to about 25,000. To our knowledge, this is the first time that a widely used map of science was updated. A comparison of the original 5-year and the new 10-year maps and classification system show (i) an increase in the total number of journals that can be mapped by 9,409 journals (social sciences had a 80% increase, humanities a 119% increase, medical (32%) and natural science (74%)), (ii) a simplification of the map by assigning all but five highly interdisciplinary journals to exactly one discipline, (iii) a more even distribution of journals over the 554 subdisciplines and 13 disciplines when calculating the coefficient of variation, and (iv) a better reflection of journal clusters when compared with paper-level citation data. When evaluating the map with a listing of desirable features for maps of science, the updated map is shown to have higher mapping accuracy, easier understandability as fewer journals are multiply classified, and higher usability for the generation of data overlays, among others.</p>
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<pubmed><TEI><teiHeader><fileDesc><titleStmt><title xml:lang="en">Design and update of a classification system: the UCSD map of science.</title>
<author><name sortKey="Borner, Katy" sort="Borner, Katy" uniqKey="Borner K" first="Katy" last="Börner">Katy Börner</name>
<affiliation wicri:level="2"><nlm:affiliation>Cyberinfrastructure for Network Science Center, School of Library and Information Science, Indiana University, Bloomington, Indiana, United States of America. katy@indiana.edu</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Cyberinfrastructure for Network Science Center, School of Library and Information Science, Indiana University, Bloomington, Indiana</wicri:regionArea>
<placeName><region type="state">Indiana</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Klavans, Richard" sort="Klavans, Richard" uniqKey="Klavans R" first="Richard" last="Klavans">Richard Klavans</name>
</author>
<author><name sortKey="Patek, Michael" sort="Patek, Michael" uniqKey="Patek M" first="Michael" last="Patek">Michael Patek</name>
</author>
<author><name sortKey="Zoss, Angela M" sort="Zoss, Angela M" uniqKey="Zoss A" first="Angela M" last="Zoss">Angela M. Zoss</name>
</author>
<author><name sortKey="Biberstine, Joseph R" sort="Biberstine, Joseph R" uniqKey="Biberstine J" first="Joseph R" last="Biberstine">Joseph R. Biberstine</name>
</author>
<author><name sortKey="Light, Robert P" sort="Light, Robert P" uniqKey="Light R" first="Robert P" last="Light">Robert P. Light</name>
</author>
<author><name sortKey="Lariviere, Vincent" sort="Lariviere, Vincent" uniqKey="Lariviere V" first="Vincent" last="Larivière">Vincent Larivière</name>
</author>
<author><name sortKey="Boyack, Kevin W" sort="Boyack, Kevin W" uniqKey="Boyack K" first="Kevin W" last="Boyack">Kevin W. Boyack</name>
</author>
</titleStmt>
<publicationStmt><idno type="wicri:source">PubMed</idno>
<date when="2012">2012</date>
<idno type="doi">10.1371/journal.pone.0039464</idno>
<idno type="RBID">pubmed:22808037</idno>
<idno type="pmid">22808037</idno>
<idno type="wicri:Area/PubMed/Corpus">000034</idno>
<idno type="wicri:Area/PubMed/Curation">000034</idno>
<idno type="wicri:Area/PubMed/Checkpoint">000034</idno>
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<sourceDesc><biblStruct><analytic><title xml:lang="en">Design and update of a classification system: the UCSD map of science.</title>
<author><name sortKey="Borner, Katy" sort="Borner, Katy" uniqKey="Borner K" first="Katy" last="Börner">Katy Börner</name>
<affiliation wicri:level="2"><nlm:affiliation>Cyberinfrastructure for Network Science Center, School of Library and Information Science, Indiana University, Bloomington, Indiana, United States of America. katy@indiana.edu</nlm:affiliation>
<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Cyberinfrastructure for Network Science Center, School of Library and Information Science, Indiana University, Bloomington, Indiana</wicri:regionArea>
<placeName><region type="state">Indiana</region>
</placeName>
</affiliation>
</author>
<author><name sortKey="Klavans, Richard" sort="Klavans, Richard" uniqKey="Klavans R" first="Richard" last="Klavans">Richard Klavans</name>
</author>
<author><name sortKey="Patek, Michael" sort="Patek, Michael" uniqKey="Patek M" first="Michael" last="Patek">Michael Patek</name>
</author>
<author><name sortKey="Zoss, Angela M" sort="Zoss, Angela M" uniqKey="Zoss A" first="Angela M" last="Zoss">Angela M. Zoss</name>
</author>
<author><name sortKey="Biberstine, Joseph R" sort="Biberstine, Joseph R" uniqKey="Biberstine J" first="Joseph R" last="Biberstine">Joseph R. Biberstine</name>
</author>
<author><name sortKey="Light, Robert P" sort="Light, Robert P" uniqKey="Light R" first="Robert P" last="Light">Robert P. Light</name>
</author>
<author><name sortKey="Lariviere, Vincent" sort="Lariviere, Vincent" uniqKey="Lariviere V" first="Vincent" last="Larivière">Vincent Larivière</name>
</author>
<author><name sortKey="Boyack, Kevin W" sort="Boyack, Kevin W" uniqKey="Boyack K" first="Kevin W" last="Boyack">Kevin W. Boyack</name>
</author>
</analytic>
<series><title level="j">PloS one</title>
<idno type="eISSN">1932-6203</idno>
<imprint><date when="2012" type="published">2012</date>
</imprint>
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</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Bibliometrics</term>
<term>Databases, Bibliographic (statistics & numerical data)</term>
<term>Humanities (classification)</term>
<term>Humanities (trends)</term>
<term>Humans</term>
<term>Internet</term>
<term>Natural Science Disciplines (classification)</term>
<term>Natural Science Disciplines (trends)</term>
<term>Research Design</term>
<term>Social Sciences (classification)</term>
<term>Social Sciences (trends)</term>
</keywords>
<keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Humanities</term>
<term>Natural Science Disciplines</term>
<term>Social Sciences</term>
</keywords>
<keywords scheme="MESH" qualifier="statistics & numerical data" xml:lang="en"><term>Databases, Bibliographic</term>
</keywords>
<keywords scheme="MESH" qualifier="trends" xml:lang="en"><term>Humanities</term>
<term>Natural Science Disciplines</term>
<term>Social Sciences</term>
</keywords>
<keywords scheme="MESH" xml:lang="en"><term>Bibliometrics</term>
<term>Humans</term>
<term>Internet</term>
<term>Research Design</term>
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<front><div type="abstract" xml:lang="en">Global maps of science can be used as a reference system to chart career trajectories, the location of emerging research frontiers, or the expertise profiles of institutes or nations. This paper details data preparation, analysis, and layout performed when designing and subsequently updating the UCSD map of science and classification system. The original classification and map use 7.2 million papers and their references from Elsevier's Scopus (about 15,000 source titles, 2001-2005) and Thomson Reuters' Web of Science (WoS) Science, Social Science, Arts & Humanities Citation Indexes (about 9,000 source titles, 2001-2004)-about 16,000 unique source titles. The updated map and classification adds six years (2005-2010) of WoS data and three years (2006-2008) from Scopus to the existing category structure-increasing the number of source titles to about 25,000. To our knowledge, this is the first time that a widely used map of science was updated. A comparison of the original 5-year and the new 10-year maps and classification system show (i) an increase in the total number of journals that can be mapped by 9,409 journals (social sciences had a 80% increase, humanities a 119% increase, medical (32%) and natural science (74%)), (ii) a simplification of the map by assigning all but five highly interdisciplinary journals to exactly one discipline, (iii) a more even distribution of journals over the 554 subdisciplines and 13 disciplines when calculating the coefficient of variation, and (iv) a better reflection of journal clusters when compared with paper-level citation data. When evaluating the map with a listing of desirable features for maps of science, the updated map is shown to have higher mapping accuracy, easier understandability as fewer journals are multiply classified, and higher usability for the generation of data overlays, among others.</div>
</front>
</TEI>
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