Search (68 results, page 1 of 4)

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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.

Date

29. 5.2015 20:57:41

Theme

Verbale Doksprachen im Online-Retrieval

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Abstract

»Sacherschließung - können wir uns die noch leisten?« Angesichts des zunehmend geringeren Gesamtetats, der den Bibliotheken zur Verfügung steht, drängt sich diese Frage nahezu auf. Sacherschließung ist teuer und für das moderne Bibliothekswesen nur dann noch tragbar, wenn der Mitteleinsatz in einem angemessenen Verhältnis zum Ergebnis steht, das sich in der Leistungsfähigkeit des Produkts widerspiegelt. Im deutschsprachigen Raum trägt die SWD wesentlich zu einer effektiveren Sacherschließungsarbeit bei. Ihre Pflege und Weiterentwicklung ist jedoch mit einem enormen Aufwand gekoppelt, der nur mit einer entsprechenden Nutzung der Daten für das thematische Retrieval in den OPACs gerechtfertigt werden kann.

Source

Dialog mit Bibliotheken. 17(2005) H.2, S.19-29

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Abstract

Schlagwortsuchen sind heutzutage fester Bestandteil vieler Online-Kataloge. Durch die Verknüpfung von Titeldaten mit dokumentspezifischen Schlagwörtern aus der SWD wird ein thematischer Zugang zu den Medien eines Verbundes bzw. einer Bibliothek ermöglicht. Der SWD-Datensatz bietet neben den Ansetzungsformen, die für die Indexate genutzt werden, jedoch noch eine Reihe weiterer Informationen, die, an der richtigen Stelle im Online-Katalog implementiert, das Retrieval seitens des Benutzers optimieren können. Untersucht wurden die Online-Kataloge der großen deutschen Bibliotheksverbünde, des österreichischen Bibliothekenverbunds sowie 106 weiterer OPACs von vorwiegend wissenschaftlichen Bibliotheken. Es wurde betrachtet, welche Suchfeatures für die Schlagwortrecherche zur Verfügung gestellt werden, wie sie gestaltet sind und inwieweit das SWD-Datenmaterial genutzt wird. Dabei zeigte sich, dass zurzeit drei Typen von Schlagwortsuchen verbreitet sind: - die Indexsuche (mehrstufige Schlagwort- bzw. Schlagwortkettensuche) - die einstufige Schlagwort- bzw. Schlagwortkettensuche sowie - die weiterführende Schlagwort- bzw. Schlagwortkettensuche von einer Treffer- bzw. Titelvollanzeige aus.

Date

17. 7.2005 10:29:46

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Abstract

A classification scheme represents a powerful indexing and retrieval tool. Obsolete terminology and misalignment between widely used systems is key impediment to better use of classification. This paper looks into the issues caused by delay in the revision of UDC class of medical sciences and possible solutions. Following a short description of the Universal Decimal Classification (UDC) and of the National Library of Medicine (NLM) Classification, the author analyses the notations and captions included in 61 class of the UDC Summary. All the classes, subclasses and special auxiliary subdivisions are covered in order to find compatible notations between both schemes, out-of-date vocabulary and out-of-date subdivisions of UDC. As a result of this study and in light of the most recent developments in medical sciences, one subdivision is questioned and several vocabulary expressions included in the caption fields are proposed to be changed or updated.

Source

Classification and authority control: expanding resource discovery: proceedings of the International UDC Seminar 2015, 29-30 October 2015, Lisbon, Portugal. Eds.: Slavic, A. u. M.I. Cordeiro

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Date

13.12.2018 13:29:07

Theme

Semantisches Umfeld in Indexierung u. Retrieval

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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

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

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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

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 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

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

Explicit authority control of works is essentially non-existent. Our catalogs are built on a principle of controlling headings, and primarily headings for names of authors. Our syndetic structure creates a spider's web of networked relationships among forms of headings, but it ends there, despite the potential richness of depth among bibliographic entities. Effective authority control of works could yield richness in the catalog that would enhance retrieval capabilities. Works are considered to constitute the intellectual content of informative artifacts that may be collected and ordered for retrieval. In a 1992 study the author examined a random sample of works drawn from the catalog of the Georgetown University Library. For each progenitor work, an instantiation network (also referred to as a bibliographic family) was constituted. A detailed analysis of the linkages that would be required for authority control of these networks is reviewed here. A new study is also presented, in which Library of Congress authority records for the works in this sample are sought and analyzed. Results demonstrate a near total lack of control, with only 5.6% of works for which authority records were found. From a sample of 410 works, of which nearly half have instantiation networks, only 23 works could be said to have implicit authority control. However, many instantiation networks are made up of successive derivations that can be implicitly linked through collocation. The difficult work of explicitly linking instantiations comes with title changes, translations, and containing relations. The empirical evidence in the present study suggests that explicit control of expressions will provide the best control over instantiation networks because it is instantiations such as translations, abridgments, and adaptations that require explicit linking.

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Source

Information processing and management. 29(1993) no.1, S.47-59

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Source

AKMB-news. 3(1997) H.3, S.26-29

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Date

19. 3.2015 16:29:52

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Date

24. 5.2001 19:22:37

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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

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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.