{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,14]],"date-time":"2026-05-14T08:48:38Z","timestamp":1778748518313,"version":"3.51.4"},"reference-count":32,"publisher":"Emerald","issue":"3","license":[{"start":{"date-parts":[[2021,8,31]],"date-time":"2021-08-31T00:00:00Z","timestamp":1630368000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.emerald.com\/insight\/site-policies"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JD"],"published-print":{"date-parts":[[2022,3,23]]},"abstract":"<jats:sec><jats:title content-type=\"abstract-subheading\">Purpose<\/jats:title><jats:p>This study continues a long history of author co-citation analysis of the intellectual structure of information science into the time period of 2011\u20132020. It also examines changes in this structure from 2006\u20132010 through 2011\u20132015 to 2016\u20132020. Results will contribute to a better understanding of the information science research field.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Design\/methodology\/approach<\/jats:title><jats:p>The well-established procedures and techniques for author co-citation analysis were followed. Full records of research articles in core information science journals published during 2011\u20132020 were retrieved and downloaded from the Web of Science database. About 150 most highly cited authors in each of the two five-year time periods were selected from this dataset to represent this field, and their co-citation counts were calculated. Each co-citation matrix was input into SPSS for factor analysis, and results were visualized in Pajek. Factors were interpreted as specialties and labeled upon an examination of articles written by authors who load primarily on each factor.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Findings<\/jats:title><jats:p>The two-camp structure of information science continued to be present clearly. Bibliometric indicators for research evaluation dominated the Knowledge Domain Analysis camp during both fivr-year time periods, whereas interactive information retrieval (IR) dominated the IR camp during 2011\u20132015 but shared dominance with information behavior during 2016\u20132020. Bridging between the two camps became increasingly weaker and was only provided by the scholarly communication specialty during 2016\u20132020. The IR systems specialty drifted further away from the IR camp. The information behavior specialty experienced a deep slump during 2011\u20132020 in its evolution process. Altmetrics grew to dominate the Webometrics specialty and brought it to a sharp increase during 2016\u20132020.<\/jats:p><\/jats:sec><jats:sec><jats:title content-type=\"abstract-subheading\">Originality\/value<\/jats:title><jats:p>Author co-citation analysis (ACA) is effective in revealing intellectual structures of research fields. Most related studies used term-based methods to identify individual research topics but did not examine the interrelationships between these topics or the overall structure of the field. The few studies that did discuss the overall structure paid little attention to the effect of changes to the source journals on the results. The present study does not have these problems and continues the long history of benchmark contributions to a better understanding of the information science field using ACA.<\/jats:p><\/jats:sec>","DOI":"10.1108\/jd-06-2021-0119","type":"journal-article","created":{"date-parts":[[2021,8,30]],"date-time":"2021-08-30T00:34:46Z","timestamp":1630283686000},"page":"728-744","source":"Crossref","is-referenced-by-count":13,"title":["Intellectual structure of information science 2011\u20132020: an author co-citation analysis"],"prefix":"10.1108","volume":"78","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2530-5065","authenticated-orcid":false,"given":"Dangzhi","family":"Zhao","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Andreas","family":"Strotmann","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"140","published-online":{"date-parts":[[2021,8,31]]},"reference":[{"issue":"6","key":"key2022032206030211100_ref001","doi-asserted-by":"publisher","DOI":"10.1016\/j.ipm.2020.102300","article-title":"Considering author sequence in all-author co-citation analysis","volume":"57","year":"2020","journal-title":"Information Processing and Management"},{"key":"key2022032206030211100_ref002","doi-asserted-by":"publisher","first-page":"275","DOI":"10.1007\/s11192-018-2757-z","article-title":"Using the appearance of citations in full text on author co-citation analysis","volume":"116","year":"2018","journal-title":"Scientometrics"},{"issue":"3","key":"key2022032206030211100_ref003","doi-asserted-by":"publisher","first-page":"2071","DOI":"10.1007\/s11192-015-1762-8","article-title":"Evolution of research subjects in library and information science based on keyword, bibliographical coupling, and co-citation analyses","volume":"105","year":"2015","journal-title":"Scientometrics"},{"issue":"3","key":"key2022032206030211100_ref004","doi-asserted-by":"publisher","first-page":"1507","DOI":"10.1007\/s11192-017-2432-9","article-title":"Mapping the evolution of library and information science (1978\u20132014) using topic modeling on LISA","volume":"112","year":"2017","journal-title":"Scientometrics"},{"key":"key2022032206030211100_ref005","volume-title":"Multivariate Data Analysis","year":"1998","edition":"5th ed."},{"key":"key2022032206030211100_ref006","doi-asserted-by":"publisher","first-page":"2561","DOI":"10.1007\/s11192-020-03721-0","article-title":"Evolution of research topics in LIS between 1996 and 2019: an analysis based on latent Dirichlet allocation topic model","volume":"125","year":"2020","journal-title":"Scientometrics"},{"key":"key2022032206030211100_ref007","doi-asserted-by":"publisher","first-page":"869","DOI":"10.1007\/s11192-018-2695-9","article-title":"Emerging trends and new developments in information science: a document co-citation analysis (2009\u20132016)","volume":"115","year":"2018","journal-title":"Scientometrics"},{"key":"key2022032206030211100_ref008","doi-asserted-by":"publisher","first-page":"717","DOI":"10.1007\/s11192-020-03645-9","article-title":"The dynamics of research subfields for library and information science: an investigation based on word bibliographic coupling","volume":"125","year":"2020","journal-title":"Scientometrics"},{"issue":"4","key":"key2022032206030211100_ref009","doi-asserted-by":"publisher","first-page":"954","DOI":"10.1016\/j.joi.2016.07.007","article-title":"Content- and proximity-based author co-citation analysis using citation sentences","volume":"10","year":"2016","journal-title":"Journal of Informetrics"},{"key":"key2022032206030211100_ref010","doi-asserted-by":"publisher","first-page":"1753","DOI":"10.1007\/s11192-019-03239-0","article-title":"Visual topical analysis of library and information science","volume":"121","year":"2019","journal-title":"Scientometrics"},{"issue":"3","key":"key2022032206030211100_ref011","doi-asserted-by":"publisher","first-page":"278","DOI":"10.1016\/j.acalib.2019.04.001","article-title":"Popular research topics in the recent journal publications of library and information science","volume":"45","year":"2019","journal-title":"The Journal of Academic Librarianship"},{"issue":"3","key":"key2022032206030211100_ref012","doi-asserted-by":"publisher","first-page":"737","DOI":"10.1007\/s11192-015-1629-z","article-title":"Detecting the intellectual structure of library and information science based on formal concept analysis","volume":"104","year":"2015","journal-title":"Scientometrics"},{"key":"key2022032206030211100_ref013","doi-asserted-by":"publisher","DOI":"10.1177\/0165551520932119","article-title":"Twenty-six years of LIS research focus and hot spots, 1990\u20132016: a co-word analysis","year":"2020","journal-title":"Journal of Information Science"},{"key":"key2022032206030211100_ref014","doi-asserted-by":"publisher","first-page":"195","DOI":"10.1007\/s11192-017-2486-8","article-title":"Co-word analysis and thematic landscapes in Spanish information science literature, 1985\u20132014","volume":"113","year":"2017","journal-title":"Scientometrics"},{"issue":"3","key":"key2022032206030211100_ref015","doi-asserted-by":"publisher","first-page":"456","DOI":"10.1007\/s12109-018-9590-3","article-title":"Forty-five years of LIS research evolution, 1971\u20132015: an informetrics study of the author-supplied keywords","volume":"34","year":"2018","journal-title":"Publishing Research Quarterly"},{"issue":"4","key":"key2022032206030211100_ref016","article-title":"Intellectual structure of knowledge in information behavior: a co-word analysis","volume":"2","year":"2016","journal-title":"Human Information Interaction"},{"issue":"ahead-of-print","key":"key2022032206030211100_ref017","doi-asserted-by":"publisher","DOI":"10.1108\/LHT-06-2020-0126","article-title":"Analysis on the research progress of library and information science since the new century","volume":"ahead-of-print","year":"2020","journal-title":"Library Hi Tech"},{"issue":"3","key":"key2022032206030211100_ref018","doi-asserted-by":"publisher","DOI":"10.1016\/j.acalib.2021.102351","article-title":"A study of differences between all-author bibliographic coupling analysis and all-author co-citation analysis in detecting the intellectual structure of a discipline","volume":"47","year":"2021","journal-title":"The Journal of Academic Librarianship"},{"key":"key2022032206030211100_ref019","doi-asserted-by":"publisher","first-page":"1125","DOI":"10.1007\/s11192-020-03798-7","article-title":"A comparative study of first and all-author bibliographic coupling analysis based on Scientometrics","volume":"126","year":"2021","journal-title":"Scientometrics"},{"issue":"9","key":"key2022032206030211100_ref020","doi-asserted-by":"crossref","first-page":"1820","DOI":"10.1002\/asi.22695","article-title":"Author name disambiguation: what difference does it make in author-based citation analysis?","volume":"63","year":"2012","journal-title":"Journal of the American Society for Information Science and Technology"},{"issue":"1","key":"key2022032206030211100_ref021","doi-asserted-by":"publisher","first-page":"42","DOI":"10.1016\/j.lisr.2014.09.002","article-title":"How important is computing technology for library and information science research?","volume":"37","year":"2015","journal-title":"Library and Information Science Research"},{"key":"key2022032206030211100_ref022","first-page":"327","article-title":"Visualizing a discipline: an author co-citation analysis of information science, 1972\u20131995","volume":"49","year":"1998","journal-title":"Journal of the American Society for Information Science"},{"issue":"1","key":"key2022032206030211100_ref023","doi-asserted-by":"crossref","first-page":"208","DOI":"10.1016\/j.joi.2015.01.001","article-title":"Visualizing information science: author direct citation analysis in China and around the world","volume":"9","year":"2015","journal-title":"Journal of Informetrics"},{"issue":"1","key":"key2022032206030211100_ref500","doi-asserted-by":"publisher","first-page":"132","DOI":"10.1016\/j.joi.2015.12.003","article-title":"Visualizing the intellectual structure of information science (2006-2015): introducing author keyword coupling analysis","volume":"10","year":"2016","journal-title":"Journal of Informetrics"},{"issue":"4","key":"key2022032206030211100_ref024","doi-asserted-by":"publisher","first-page":"1099","DOI":"10.1016\/j.joi.2018.09.004","article-title":"Does deep learning help topic extraction? A kernel k-means clustering method with word embedding","volume":"12","year":"2018","journal-title":"Journal of Informetrics"},{"key":"key2022032206030211100_ref025","doi-asserted-by":"crossref","first-page":"916","DOI":"10.1002\/asi.20799","article-title":"Information Science during the first decade of the web: an enriched author co-citation analysis","volume":"59","year":"2008","journal-title":"Journal of the American Society for Information Science and Technology"},{"key":"key2022032206030211100_ref026","doi-asserted-by":"crossref","first-page":"2070","DOI":"10.1002\/asi.20910","article-title":"Evolution of research activities and intellectual influences in information science 1996\u20132005: introducing author bibliographic coupling analysis","volume":"59","year":"2008","journal-title":"Journal of The American Society for Information Science and Technology"},{"key":"key2022032206030211100_ref027","doi-asserted-by":"crossref","first-page":"229","DOI":"10.1016\/j.joi.2008.05.004","article-title":"Comparing all-author and first-author co-citation analyses of information science","volume":"2","year":"2008","journal-title":"Journal of Informetrics"},{"key":"key2022032206030211100_ref028","doi-asserted-by":"crossref","first-page":"654","DOI":"10.1002\/asi.21495","article-title":"Counting first, last, or all authors in citation analysis: a comprehensive comparison in the highly collaborative stem cell research field","volume":"62","year":"2011","journal-title":"Journal of The American Society for Information Science and Technology"},{"issue":"5","key":"key2022032206030211100_ref029","first-page":"996","article-title":"The knowledge base and research front of Information science 2006\u20132010: an author co-citation and bibliographic coupling analysis","volume":"65","year":"2014","journal-title":"Journal of the Association for Information Science and Technology"},{"key":"key2022032206030211100_ref030","volume-title":"Analysis and Visualization of Citation Networks","year":"2015"},{"issue":"1","key":"key2022032206030211100_ref031","doi-asserted-by":"publisher","first-page":"255","DOI":"10.1007\/s11192-020-03462-0","article-title":"Telescopic and panoramic views of library and information science research 2011\u20132018: a comparison of four weighting schemes for author co-citation analysis","volume":"124","year":"2020","journal-title":"Scientometrics"}],"container-title":["Journal of Documentation"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.emerald.com\/insight\/content\/doi\/10.1108\/JD-06-2021-0119\/full\/xml","content-type":"application\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.emerald.com\/insight\/content\/doi\/10.1108\/JD-06-2021-0119\/full\/html","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,7,24]],"date-time":"2025-07-24T22:34:21Z","timestamp":1753396461000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.emerald.com\/jd\/article\/78\/3\/728-744\/202324"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,8,31]]},"references-count":32,"journal-issue":{"issue":"3","published-online":{"date-parts":[[2021,8,31]]},"published-print":{"date-parts":[[2022,3,23]]}},"alternative-id":["10.1108\/JD-06-2021-0119"],"URL":"https:\/\/doi.org\/10.1108\/jd-06-2021-0119","relation":{},"ISSN":["0022-0418"],"issn-type":[{"value":"0022-0418","type":"print"}],"subject":[],"published":{"date-parts":[[2021,8,31]]}}}