Knowl. Org. 46(2019)No.4 KO KNOWLEDGE ORGANIZATION Official Journal of the International Society for Knowledge Organization ISSN 0943 – 7444 International Journal devoted to Concept Theory, Classification, Indexing and Knowledge Representation Contents Articles Reviews of Concepts in Knowledge Organization Sandra Johansson and Koraljka Golub. Howard D. White. LibraryThing for Libraries: How Tag Moderation Patrick Wilson ............................................................................... 279 and Size Limitations Affect Tag Clouds .................................. 245 Richard P. Smiraglia. Emma Quinlan and Pauline Rafferty. Work ............................................................................................... 308 Astronomy Classification: Towards a Faceted Classification Scheme .................................................................. 260 Jarmo Saarti. Fictional Literature, Classification and Indexing ..................... 320 Books Recently Published ...................................................... 333 Knowl. Org. 46(2019)No.4 KNOWLEDGE ORGANIZATION KO Official Journal of the International Society for Knowledge Organization ISSN 0943 – 7444 International Journal devoted to Concept Theory, Classification, Indexing and Knowledge Representation KNOWLEDGE ORGANIZATION José Augusto Chaves GUIMARÃES, Departamento de Ciência da Informacão, Universidade Estadual Paulista–UNESP, Av. Hygino Muzzi This journal is the organ of the INTERNATIONAL SOCIETY FOR Filho 737, 17525-900 Marília SP Brazil. E-mail: [email protected] KNOWLEDGE ORGANIZATION (General Secretariat: Amos DA- VID, Université de Lorraine, 3 place Godefroy de Bouillon, BP 3397, Michael KLEINEBERG, Humboldt-Universität zu Berlin, Unter den 54015 Nancy Cedex, France. E-mail: [email protected]. Linden 6, D-10099 Berlin. E-mail: [email protected] Editors Kathryn LA BARRE, School of Information Sciences, University of Illi- nois at Urbana-Champaign, 501 E. Daniel Street, MC-493, Champaign, IL Richard P. SMIRAGLIA (Editor-in-Chief), Institute for Knowledge Or- 61820-6211 USA. E-mail: [email protected] ganization and Structure, Shorewood WI 53211 USA. E-mail: [email protected] Devika P. MADALLI, Documentation Research and Training Centre (DRTC) Indian Statistical Institute (ISI), Bangalore 560 059, India. Joshua HENRY, Institute for Knowledge Organization and Structure, E-mail: [email protected] Shorewood WI 53211 USA. Daniel MARTÍNEZ-ÁVILA, Departamento de Ciência da Informação, Peter TURNER, Institute for Knowledge Organization and Culture, Universidade Estadual Paulista–UNESP, Av. Hygino Muzzi Filho 737, Shorewood WI 53211 USA. 17525-900 Marília SP Brazil. E-mail: [email protected] J. Bradford YOUNG (Bibliographic Consultant), Institute for Knowledge Widad MUSTAFA el HADI, Université Charles de Gaulle Lille 3, URF Organization and Structure, Shorewood WI 53211, USA. IDIST, Domaine du Pont de Bois, Villeneuve d’Ascq 59653, France. E-mail: [email protected] Editor Emerita H. Peter OHLY, Prinzenstr. 179, D-53175 Bonn, Germany. Hope A. OLSON, School of Information Studies, University of Wiscon- E-mail: [email protected] sin-Milwaukee, Milwaukee, Northwest Quad Building B, 2025 E New- port St., Milwaukee, WI 53211 USA. E-mail: [email protected] M. Cristina PATTUELLI, School of Information, Pratt Institute, 144 W. 14th Street, New York, New York 10011, USA. Series Editors E-mail: [email protected] Birger HJØRLAND (Reviews of Concepts in Knowledge Organization), K. S. RAGHAVAN, Member-Secretary, Sarada Ranganathan Endowment Department of Information Studies, University of Copenhagen. E-Mail: for Library Science, PES Institute of Technology, 100 Feet Ring Road, [email protected] BSK 3rd Stage, Bangalore 560085, India. E-mail: [email protected]. María J. LÓPEZ-HUERTAS (Research Trajectories in Knowledge Heather Moulaison SANDY, The iSchool at the University of Missouri, Organization), Universidad de Granada, Facultad de Biblioteconomía y 303 Townsend Hall, Columbia, MO 65211, USA. Documentación, Campus Universitario de Cartuja, Biblioteca del Colegio E-mail: [email protected] Máximo de Cartuja, 18071 Granada, Spain. E-mail: [email protected] M. P. SATIJA, Guru Nanak Dev University, School of Library and Infor- Editorial Board mation Science, Amritsar-143 005, India. E-mail: [email protected] Thomas DOUSA, The University of Chicago Libraries, 1100 E 57th St, Chicago, IL 60637 USA. E-mail: [email protected] Aida SLAVIC, UDC Consortium, PO Box 90407, 2509 LK The Hague, The Netherlands. E-mail: [email protected] Melodie J. FOX, Institute for Knowledge Organization and Structure, Shorewood WI 53211 USA. E-mail: [email protected]. Renato R. SOUZA, Applied Mathematics School, Getulio Vargas Foundation, Praia de Botafogo, 190, 3o andar, Rio de Janeiro, RJ, 22250- Jonathan FURNER, Graduate School of Education & Information Stud- 900, Brazil. E-mail: [email protected] ies, University of California, Los Angeles, 300 Young Dr. N, Mailbox 951520, Los Angeles, CA 90095-1520, USA. Rick SZOSTAK, University of Alberta, Department of Economics, 4 E-mail: [email protected] Edmonton, Alberta, Canada, T6G 2H4. E-mail: [email protected] Claudio GNOLI, University of Pavia, Science and Technology Library, Joseph T. TENNIS, The Information School of the University of Wash- via Ferrata 1, I-27100 Pavia, Italy. E-mail: [email protected] ington, Box 352840, Mary Gates Hall Ste 370, Seattle WA 98195-2840 USA. E-mail: [email protected] Ann M. GRAF, School of Library and Information Science, Simmons University, 300 The Fenway, Boston, MA 02115 USA. Maja ŽUMER, Faculty of Arts, University of Ljubljana, Askerceva 2, E-mail: [email protected] Ljubljana 1000 Slovenia. E-mail: [email protected] Jane GREENBERG, College of Computing & Informatics, Drexel University, 3141 Chestnut Street, Philadelphia, PA 19104 USA, E-mail: [email protected] Knowl. Org. 46(2019)No.4 245 S. Johansson and K Golub. LibraryThing for Libraries: How Tag Moderation and Size Limitations Affect Tag Clouds LibraryThing for Libraries: How Tag Moderation and Size Limitations Affect Tag Clouds Sandra Johansson* and Koraljka Golub** *Boarpsvägen 310, 266 97 Hjärnarp, Sweden, <[email protected]> **Linnaeus University, School of Cultural Sciences, Department of Library and Information Science, Faculty of Arts and Humanities, 351 95 Växjö, Sweden, <[email protected]> Sandra Johansson earned her bachelor’s degree in library and information science at Linnaeus University, Sweden in January, 2018 by conducting the study presented in this article. She is especially interested in ways to develop and adapt the library as our society and needs change, and is currently working as a librarian with special focus on young adults at a local library in a small town in Sweden. Koraljka Golub is an associate professor at Linnaeus University, Sweden. Her research primarily focuses on topics related to information retrieval and knowledge organization. Of her particular interest is integration of tradi- tional knowledge organization systems with social tagging and/or automated subject indexing and evaluating results in the context of end-user information retrieval. Details of her research projects and related activities are available at her website <koraljka.info>. Johansson, Sandra and Koraljka Golub. 2019. “LibraryThing for Libraries: How Tag Moderation and Size Lim- itations Affect Tag Clouds.” Knowledge Organization 46(4): 245-259. 33 references. DOI:10.5771/0943-7444-2019- 4-245. Abstract: The aim of this study is to analyse differences between tags on LibraryThing’s web page and tag clouds in their “LibraryThing for Libraries” service, and assess if, and how, the LibraryThing tag moderation and limi- tations to the size of the tag cloud in the library catalogue affect the description of the information resource. An e-mail survey was conducted with personnel at LibraryThing, and the results were compared against tags for twenty different fiction books, collected from two different library catalogues with disparate tag cloud sizes, and LibraryThing’s web page. The data were analysed using a modified version of Golder and Huberman’s tag cate- gories (2006). The results show that while LibraryThing claims to only remove the inherently personal tags, several other types of tags are found to have been discarded as well. Occasionally a certain type of tag is included in one book, and excluded in another. The comparison between the two tag cloud sizes suggests that the larger tag clouds provide a more pronounced picture regarding the contents of the book but at the cost of an increase in the number of tags with synonymous or redundant information. Received: 20 January 2019; Revised: 4 May 2019; Accepted: 10 May 2019 Keywords: tags, library catalogues, LibraryThing, LTFL, tag clouds 1.0 Introduction Importing tags from an external, well-established source such as LibraryThing (https://www.librarything. End-user tagging is a popular service of many online in- com), presents a strong candidate for enhancing library formation systems, providing users with opportunities for catalogues by social tags. This is particularly pertinent to personal and collaborative interactive information organi- tags for literary fiction for which commonly used subject zation and retrieval. While advantages such as additional indexing languages in libraries often do not suffice. Li- access points representing users’ perspectives have been