Search (86 results, page 1 of 5)

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Abstract

Authority control is a standard practice in the library community that provides consistent, unique, and unambiguous reference to entities such as persons, places, concepts, etc. The ideal way of referring to authority records through unique identifiers is in line with the current linked data principle. When presenting a bibliographic record, the linked authority records are expanded with the authoritative information. This way, any update in the authority records will not affect the indexing of the bibliographic records. The structural information in the authority files can also be leveraged to expand the user's query to retrieve bibliographic records associated with all the variations, narrower terms or related terms. However, in many digital libraries, especially largescale aggregations such as WorldCat and Europeana, name strings are often used instead of authority record identifiers. This is also partly due to the lack of global authority records that are valid across countries and cultural heritage domains. But even when there are global authority systems, they are not applied at scale. For example, in WorldCat, only 15% of the records have DDC and 3% have UDC codes; less than 40% of the records have one or more topical terms catalogued in the 650 MARC field, many of which are too general (such as "sports" or "literature") to be useful for retrieving bibliographic records. Therefore, when a user query is based on a Dewey code, the results usually have high precision but the recall is much lower than it should be; and, a search on a general topical term returns millions of hits without being even complete. All these practices make it difficult to leverage the key benefits of authority files. This is also true for authority files that have been transformed into linked data and enriched with mapping information. There are practical reasons for using name strings instead of identifiers. One is the indexing and query response. The future infrastructure design should take the performance into account while embracing the benefit of linking instead of copying, without introducing extra complexity to users. Notwithstanding all the restrictions, we argue that largescale aggregations also bring new opportunities for better exploiting the benefits of authority records. It is possible to use machine learning techniques to automatically link bibliographic records to authority records based on the manual input of cataloguers. Text mining and visualization techniques can offer a contextual view of authority records, which in return can be used to retrieve missing or mis-catalogued records. In this talk, we will describe such opportunities in more detail.

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Abstract

As more online databases are integrated into digital libraries, the issue of quality control of the data becomes increasingly important, especially as it relates to the effective retrieval of information. Authority work, the need to discover and reconcile variant forms of strings in bibliographical entries, will become more critical in the future. Spelling variants, misspellings, and transliteration differences will all increase the difficulty of retrieving information. We investigate a number of approximate string matching techniques that have traditionally been used to help with this problem. We then introduce the notion of approximate word matching and show how it can be used to improve detection and categorization of variant forms. We demonstrate the utility of these approaches using data from the Astrophysics Data System and show how we can reduce the human effort involved in the creation of authority files

Source

Journal of the American Society for Information Science. 51(2000) no.8, S.774-786

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Abstract

We aim to trace the scenario of the use of controlled vocabularies as tools of research and work in the scope of representation and retrieval of information in institutions that have archival collections, in order to highlight the need for greater emphasis on the subject of representation of archival information in the academic field, increasing the visibility for the study and analysis of the collections in question and their contents, relevant to the information society. We investigate the current scenario of the use of controlled vocabularies in the archival collections of Rio de Janeiro, the theoretical-methodological changes arising from the impacts of information technologies on analysis, representation, such as classification and indexing, content retrieval, information needs in the contemporary world. The representation of information is associated with classification and retrieval of information to the organization of knowledge in information science. There is a gap in the archival area regarding the expression representation of information from the description of the nineteenth century. As for the theoretical-methodological aspect, there was a theoretical survey of the representation of information in publications in the interdisciplinary areas; as to the op-erational methodology, questionnaires were applied to information agencies on the use of controlled vocabularies, in relation to the treatment of information in archival collections. We conclude by demonstrating the importance of adopting the concept of information representation in archives, using controlled vocabularies associated with new information technologies and informational ecology, consolidating the area as a scientific and interdisciplinary field for information science.

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Abstract

Libraries are bridges between information and the library user in the context of information retrieval. Library users want to access information resources according to their topic. Therefore, it is important to create subject entries in bibliographic records. If subject added entries and their redirects are done correctly, it will make it easier for users to access the information they are looking for. In this article the collaborative studies and projects made in Turkey are being discussed.

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Abstract

Authority files have played an important role in improving the quality of indexing and subject cataloging. Although authorities can significantly improve search by increasing the number of access points, they are rarely an integral part of the information retrieval process, particularly end-users searches. A retrieval prototype, searchFAST, was developed to test the feasibility of using an authority file as an index to bibliographic records. searchFAST uses FAST (Faceted Application of Subject Terminology) as an index to OCLC's WorldCat.org bibliographic database. The searchFAST methodology complements, rather than replaces, existing WorldCat.org access. The bibliographic file is searched indirectly; first the authority file is searched to identify appropriate subject headings, then the headings are used to retrieve the matching bibliographic records. The prototype demonstrates the effectiveness and practicality of using an authority file as an index. Searching the authority file leverages authority control work by increasing the number of access points while supporting a simple interface designed for end-users.

Theme

Verbale Doksprachen im Online-Retrieval

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Abstract

Czech authority file of topical terms is intended to form a base for multilingual controlled vocabulary. The aim of the proposal is to provide users of online library catalogues and internet services of cooperating institutions with an indexing and retrieval tool which enables multilingual and cross-domain searching ("one-stop" seamless searching). The goal of the project is to establish a multilingual subject approach to catalogues of participating libraries (Czechia, Croatia, Latvia, Lithuania, Macedonia, Slovakia, and Slovenia). In practice this means that a user in any of these countries would enter a query in his local language and receive hits from all the catalogues. The initiative is complying with the main goals currently defined by IFLA for the activity of Indexing and Classification Section, it means: Changing Roles of Subject Access Tools (Berlin), Implementation and Adaptation of Global Tools for Subject Access to Local Needs (Buenos Aires), and Cataloguing and Subject Tools for Global Access: International Partnerships (Oslo).

Content

The aim of this initiative is to provide the users of online library catalogues and information gateways of cooperating libraries with a prototype for multilingual subject searching in online environment. Library collections of these libraries are large and without any doubt very valuable for researchers throughout Europe. What is needed is a standardized, authorized indexing and retrieval tool which would bring together all their catalogues and databases and enable multilingual subject searching. At the beginning of the project, a number of factors affecting subject indexing in current environment and cross-searching for subjects have been identified. These factors include - standardization of subject retrieval process and indexing and classification tools - subject retrieval methods - possibility of interoperability among different indexing and classification schemes - multilingualism issue - possibility to increase precision and recall trough Z39.50 protocol and its profiles and to apply authority control in subject retrieval process - need for cooperation

Footnote

Vortrag, World Library and Information Congress: 71th IFLA General Conference and Council "Libraries - A voyage of discovery", August 14th - 18th 2005, Oslo, Norway.

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Abstract

Authority control is a quite recent term in the long history of cataloguing, although the underlying principle is among the very early principles of bibliographic control. Bibliographic control is a Field in transformation by the rapid expansion of the WWW, which has brought new problems to infonnation discovery and retrieval, creating new challenges and requirements in information management. In a comprehensive approach, authority control is presented as one of the most promising library activities in this respect. The evolution of work methods and standards for the sharing of authority files is reviewed, showing the imbalance in developments and practical achievements between name and subject authority, in an international perspective. The need to improve the network availability and usability of authority information assets in more effective and holistic ways is underlyned; and a new philosophy and scope is proposed for library authority work, based an the primacy of the linking function of authority data, and by expanding the finding, relating and informing functions of authority records. Some of these aspects are being addressed in several projects dealing with knowledge organization systems, notably to cope with multilingual needs and to enable semantic interoperability among different systems. Library practice itself should evolve in the same direction, thereby providing practical experience to inform new or improved principles and standards for authority work, while contributing to enhance local information services and to promote their involvement in the WWW environment.

Source

Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine

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Abstract

Authority files have played an important role in improving the quality of indexing and subject cataloging. Although authorities can significantly improve searching by increasing the number of access points, they are rarely an integral part of the information retrieval process, particularly end-users' searches. A retrieval prototype, searchFAST, was developed to test the feasibility of using an authority file as an index to bibliographic records. searchFAST uses Faceted Application of Subject Terminology (FAST) as an index to OCLC's WorldCat.org bibliographic database. The searchFAST prototype complements, rather than replaces, existing WorldCat.org access. The bibliographic file is searched indirectly; first the authority file is searched to identify appropriate subject headings, then the headings are used to retrieve the matching bibliographic records. The prototype demonstrates the effectiveness and practicality of using an authority file as an index. Searching the authority file leverages authority control work by increasing the number of access points while supporting a simple interface designed for end-users.

Theme

Verbale Doksprachen im Online-Retrieval

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Abstract

Today's electronic catalogue makes retrieval of specific records very simple and quick in most (not all) cases, but searches aimed at the reliable retrieval of all material answering a well-defined need (author, work, theme, form, etc.) are still long and tiring, and sometimes impossible, in crowded bibliographic databases. In spite of its great relevance, authority control has been and still is the "poor relative" of cataloguing, the often neglected or overlooked "other half" if we compare it to the creation of bibliographic records. The FRBR study and the new authority control standards (GARR and UNIMARC Authorities) are important steps towards future perspectives. Even today, cataloguing codes do not make clear the difference between the access points for bibliographic records and the relationships (work-to-work, author-to-work, etc.) that are independent from spoecific publications. With the development of richer authority records and relationships, the bibliographic record might be relieved of information related to entities different from publications and of all the functions more suitably worked out upstream or downstream in access systems or by links to the images and/or the texts of the publications themselves. A "light" bibliographic record would no longer be the paramount component of library information systems; it would keep its central role rather as nimble, swift turntable between access and content organization systems and systems for management and display of digital resources themselves.

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Abstract

The development of the National Authority File of Geographic Names has been carried out by the Russian State Library (RSL) since 2003 in the framework of the Federal program called "Russian culture (2001-2005)". The file will be a part of the complex of the authority files for the network of Russian libraries (LIBNET). Its aim is to provide usage of standardized Russian geographic names in the library practice (cataloguing of the documents and information retrieval), established officially on the federal level. The Russian National Authority File for Geographical Names is identified by the code "rugeo" in the MARC 21 format for use in subfield $2 for subject/index term sources.

Footnote

Vortrag, World Library and Information Congress: 71th IFLA General Conference and Council "Libraries - A voyage of discovery", August 14th - 18th 2005, Oslo, Norway.

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Abstract

While many catalogers are using the Web to find the information they need to perform authority work quickly and accurately, the full potential of the Web to assist catalogers in name authority work has yet to be realized. The ever-growing nature of the Web means that available information for creating personal name, corporate name, and other types of headings will increase. In this article, we examine ways in which simple and effective Web searching can save catalogers time and money in the process of authority work. In addition, questions involving evaluating authority information found on the Web are explored.

Date

10. 9.2000 17:38:22

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Abstract

More and more users index everything on their own in the web 2.0. There are services for links, videos, pictures, books, encyclopaedic articles and scientific articles. All these services are library independent. But must that really be? Can't libraries help with their experience and tools to make user indexing better? On the experience of a project from German language Wikipedia together with the German person authority files (Personen Namen Datei - PND) located at German National Library (Deutsche Nationalbibliothek) I would like to show what is possible. How users can and will use the authority files, if we let them. We will take a look how the project worked and what we can learn for future projects. Conclusions - Authority files can have a role in the web 2.0 - there must be an open interface/ service for retrieval - everything that is indexed on the net with authority files can be easy integrated in a federated search - O'Reilly: You have to found ways that your data get more important that more it will be used

Content

Vortrag anlässlich des Workshops: "Extending the multilingual capacity of The European Library in the EDL project Stockholm, Swedish National Library, 22-23 November 2007".

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Date

24. 9.2021 12:22:02

Theme

Verbale Doksprachen im Online-Retrieval

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Abstract

This paper examines the current state of authority control development in Spanish university repositories. As a decade has now gone by since the initiation of the first projects for institutional repositories in Spain, it would seem a suitable time to draw attention to authority control, an element of the first rank in evaluating the consistency and integrity of systems for recovering bibliographic information. The work is focused on examining the implementation of authorities in twenty-six Spanish university repositories, taking into account the information provided by the standardization experts working in them. The study considers the responses of the coordinators for these digital collections using a set of analytic criteria set out in the study. The handling of authorities in the group of university repositories studied may be described as uneven. Greater interest may be observed in controlling author entries, with laxer solutions for authority control of subjects. It suggests the need to establish effective policies for the management of authorities by means of cooperative efforts permitting the building up of corpora of entries for authorities that would aid the processes of cataloguing, metadata creation, and information retrieval in systems based on syntactic and semantic interoperability in which manual intervention should be minimal.

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Content

Inhalt: Editorial - Michael Franke-Maier, Anna Kasprzik, Andreas Ledl und Hans Schürmann Qualität in der Inhaltserschließung - Ein Überblick aus 50 Jahren (1970-2020) - Andreas Ledl Fit for Purpose - Standardisierung von inhaltserschließenden Informationen durch Richtlinien für Metadaten - Joachim Laczny Neue Wege und Qualitäten - Die Inhaltserschließungspolitik der Deutschen Nationalbibliothek - Ulrike Junger und Frank Scholze Wissensbasen für die automatische Erschließung und ihre Qualität am Beispiel von Wikidata - Lydia Pintscher, Peter Bourgonje, Julián Moreno Schneider, Malte Ostendorff und Georg Rehm Qualitätssicherung in der GND - Esther Scheven Qualitätskriterien und Qualitätssicherung in der inhaltlichen Erschließung - Thesenpapier des Expertenteams RDA-Anwendungsprofil für die verbale Inhaltserschließung (ET RAVI) Coli-conc - Eine Infrastruktur zur Nutzung und Erstellung von Konkordanzen - Uma Balakrishnan, Stefan Peters und Jakob Voß Methoden und Metriken zur Messung von OCR-Qualität für die Kuratierung von Daten und Metadaten - Clemens Neudecker, Karolina Zaczynska, Konstantin Baierer, Georg Rehm, Mike Gerber und Julián Moreno Schneider Datenqualität als Grundlage qualitativer Inhaltserschließung - Jakob Voß Bemerkungen zu der Qualitätsbewertung von MARC-21-Datensätzen - Rudolf Ungváry und Péter Király Named Entity Linking mit Wikidata und GND - Das Potenzial handkuratierter und strukturierter Datenquellen für die semantische Anreicherung von Volltexten - Sina Menzel, Hannes Schnaitter, Josefine Zinck, Vivien Petras, Clemens Neudecker, Kai Labusch, Elena Leitner und Georg Rehm Ein Protokoll für den Datenabgleich im Web am Beispiel von OpenRefine und der Gemeinsamen Normdatei (GND) - Fabian Steeg und Adrian Pohl Verbale Erschließung in Katalogen und Discovery-Systemen - Überlegungen zur Qualität - Heidrun Wiesenmüller Inhaltserschließung für Discovery-Systeme gestalten - Jan Frederik Maas Evaluierung von Verschlagwortung im Kontext des Information Retrievals - Christian Wartena und Koraljka Golub Die Qualität der Fremddatenanreicherung FRED - Cyrus Beck Quantität als Qualität - Was die Verbünde zur Verbesserung der Inhaltserschließung beitragen können - Rita Albrecht, Barbara Block, Mathias Kratzer und Peter Thiessen Hybride Künstliche Intelligenz in der automatisierten Inhaltserschließung - Harald Sack

Footnote

Vgl.: https://www.degruyter.com/document/doi/10.1515/9783110691597/html. DOI: https://doi.org/10.1515/9783110691597. Rez. in: Information - Wissenschaft und Praxis 73(2022) H.2-3, S.131-132 (B. Lorenz u. V. Steyer). Weitere Rezension in: o-bib 9(20229 Nr.3. (Martin Völkl) [https://www.o-bib.de/bib/article/view/5843/8714].

Theme

Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval

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Abstract

This article describes the project to build the initial International Standard Name Identifier (ISNI) database by deploying the techniques used to develop the Virtual International Authority File (VIAF). It focuses particularly on the work of the OCLC team in transforming the VIAF "resource file" model of matched data into a robust, operational, and authoritative file of uniquely assigned ISNIs as a base for an ongoing ISNI assignment system, and on the quality assurance validation of the database provided by the British Library and the Bibliothèque nationale de France. The need for future interaction between ongoing ISNI assignment and name authority control in libraries is also explored.

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Abstract

Authority control has long been an important part of the cataloging process. However, few studies have been conducted examining how librarians learn about it. Research conducted to date suggests that many librarians learn about authority control on the job rather than in formal classes. To offer an introduction to authority control information for librarians, an annotated bibliography is provided. It includes monographs, articles and papers, electronic discussion groups, Web sites related to professional conferences, additional Web sites related to authority control, and training offered through the Name Authority Cooperative Program and the Subject Authority Cooperative Program. A summary of possible future trends in authority control is also provided.

Date

10. 9.2000 17:38:22

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Abstract

A variety of information communities have developed metadata schemes to meet the needs of their own users. The ability of libraries to incorporate and use multiple metadata schemes in current library systems will depend on the compatibility of imported data with existing catalog data. Authority control will play an important role in metadata interoperability. In this article, I discuss factors for successful authority control in current library catalogs, which include operation in a well-defined and bounded universe, application of principles and standard practices to access point creation, reference to authoritative lists, and bibliographic record creation by highly trained individuals. Metadata characteristics and environmental models are examined and the likelihood of successful authority control is explored for a variety of metadata environments.

Date

10. 9.2000 17:38:22

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Abstract

Die Suche nach wirtschaftswissenschaftlicher Literatur im Internet führt heute zu unterschiedlich erschlossenen Informationsbeständen. Die Antwort auf diese Heterogenität sollte das Angebot einer integrierten sachlichen Suche über verteilte Datenbanken sein. Crosskonkordanzen unterstützen diese Entwicklung, indem sie Suchfragen in die Terminologie verschiedener Thesauri übersetzen. Nutzern von Bibliotheken und Fachinformationszentren wird das Navigieren erleichtert, sie ersparen sich Mehrfachrecherchen und können auf ihre vertraute Indexierungssprache zurückgreifen. Wirtschaftswissenschaftliche Literatur wird in Deutschland mit verschiedenen Thesauri indexiert. Einerseits bieten Hochschulbibliothekskataloge eine sachliche Suche mit den Schlagwörtern der Schlagwortnormdatei (SWD) an, andererseits sind wirtschaftswissenschaftliche Fachdatenbanken mit dem Standard Thesaurus Wirtschaft (STW) erschlossen. Hier setzt das Angebot der Crosskonkordanz Wirtschaft an - ein Retrieval-Instrument für sachlich heterogen erschlossene Datenbestände." Concordans bedeutet »übereinstimmend«, »zusammenhängend«, »verknüpft«, wir verknüpfen also die Deskriptoren (Sachbegriffe) der SWD im Bereich Wirtschaft mit den Deskriptoren des STW. Die SWD, getragen und entwickelt von Der Deutschen Bibliothek und den Bibliotheksverbünden des deutschen Sprachraums, ist das Instrument zur Indexierung der gesamten deutschsprachigen wirtschaftswissenschaftlichen Literatur. Auch unselbstständige Literatur wird beispielsweise von der Universitätsbibliothek Köln als Sondersammelgebiet Betriebswirtschaftslehre mithilfe der SWD erschlossen. Trotz ihres eigentlichen Charakters als Allgemeinthesaurus ist sie im Bereich Wirtschaft besonders differenziert entwickelt und enthält etwa 12.500 Deskriptoren. Der STW ist der bedeutendste Fachthesaurus für Wirtschaftswissenschaften in der Bundesrepublik Deutschland. Getragen vom Hamburgischen WeIt-Wirtschafts-Archiv (HWWA), der Deutschen Zentralbibliothek für Wirtschaftswissenschaften in Kiel (ZBW) und der Gesellschaft für Betriebswirtschaftliche Information München findet er Anwendung in verschiedenen Fachdatenbanken. Der STW enthält rund 5.000 Deskriptoren

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Abstract

Outlines the benefits sought by the Anglo American Authority File (AAF) project in replacing with a common authority file the Library of Congress US Name Authority File (USNAF) and the British Library Name Authority List (BLNAL). Describes the progress and techniques in the implementation of the project to create the AAF in the British Library (BL) and explains how it is used by cataloguers. Phase 1 was completed in 1996 with the loading of USNAF. Records were in USMARC format but searchable and reusable in conjunction with BLNAL. Phase 2 to eliminate duplicates was completed in 1997 for personal names and corporate names will be dealt with in 1999 when the BL Corporate Bibliographic System is also due to go live. This will prepare the ground for Phase 3, retrospective conversion to integrate BLNAL with USNAF into a single unified file