Search (71 results, page 4 of 4)

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Abstract

Controlled vocabularies are a foundational concept in library science and provide a framework for consistency in cataloging practices. Subject headings provide valuable access points to library resources during search and discovery for patrons. Many librarians will be familiar with the more widely used controlled vocabularies, like those maintained by national libraries or major professional organizations. More recently, there has been an increasing shift toward specialized vocabularies maintained by independent entities intended for much narrower use. While there is valid criticism of the nature or content of controlled vocabularies, they will likely continue to be an important feature in information organization.

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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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Date

10. 9.2000 17:38:22

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Date

10. 9.2000 17:38:22

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Abstract

In 1996, a study was undertaken at the University of Arkansas Libraries to evaluate the practice of front-end authority work for monographs copy cataloging. A sample of 283 name headings originating from Library of Congress, OCLC "Enhance" member, and general member copy was examined, and analysis revealed that 47.3 percent of headings correctly matched authority records already present in the library's local file. Another 41.3 percent exactly matched records in the OCLC authority file. These findings prompted the library to cease checking name headings at the point of cataloging. However, the level of inaccuracies present, combined with the value of authority records for cross-reference and note information, ensured that the Database Maintenance Unit would continue to review local headings reports and perform needed authority work.

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Abstract

This paper discusses the concept of "metadata" in the scope of the "digital library," two terms recently used in a great diversity of perspectives. It is not the intent to promote privilege of any particular view, but rather to help provide a better understanding of these multiple perspectives. The paper starts with a discussion of the concept of digital library, followed by an analysis of the concept of metadata. It continues with a discussion about the relationship of this concept with technology, services, and scenarios of application. The concluding remarks stress the three main arguments assumed for the relevance of the concept of metadata: the growing number of heterogeneous genres of information resources, the new emerging scenarios for interoperability, and issues related to the cost and complexity of current technology.

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Abstract

InterParty is a project that aims to develop a mechanism that will enable the interoperation of identifiers for "parties" or persons (authors, publishers, etc. - persons and corporate bodies in library authority files) across multiple domains. Partners represent the book industry, rights management, libraries, and identifier and technology communities, united by their perception of a common benefit from interoperation in terms of access to "common metadata" held by other members to improve the quality of their own data. The InterParty solution proposes a distributed network of members who provide access to "common metadata," defined as information in the public domain, sufficient to identify and distinguish the "public identity" of a person. At a minimum the InterParty network would provide access to multiple domains of data about persons, including multiple library authority files, author licensing data files, etc. It will also add value by providing a facility for linking records between different data files by means of a "link record." Link records will assert that an identity recorded in one database is the same as another identity recorded in another database. Linked data will be mutually enriching and therefore more reliable and supportive of accurate disambiguation of persons within and between databases. InterParty has potential to develop a common system that supports both the emerging needs of e-commerce and the traditional requirements of library authority control.

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Abstract

During the retrospective conversion of its printed and card catalogues, the Bibliothèque nationale de France was confronted with the existence of old bibliographic records without corporate body headings, because this concept was unknown when the books were catalogued. The Library launched two programs aimed at creating authority records for specific fields important for the access to the national bibliographic heritage, respectively named COFAR -- for the official corporate bodies, mainly national and preceding the French Revolution - and CORELI - for the religious corporate bodies (parishes, dioceses, confraternities, orders and congregations, etc.). The 2550 records created by the COFAR and CORELI programs have been included in the authority file of BNOPALE PLUS; so they are visible either via the online catalogue or separately with other authority records. They give librarians an extra tool for identifying entities. They represent also a valuable source of information accessible to anyone who takes an interest in the history of French government institutions or religious entities.

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Abstract

The paper introduces TinREAD (The Information Navigator for Readers), an integrated library system produced by IME Romania. The main feature of interest is the way TinREAD can handle a classification-based thesaurus in which verbal index terms are mapped to classification notations. It supports subject authority control interlinking the authority files (subject headings and UDC system). Authority files are used for indexing consistency. Although it is said that intellectual indexing is, unlike automated indexing, both subjective and inconsistent, TinREAD is using intellectual indexing as input (the UDC notations assigned to documents) for the automated indexing resulting from the implementation of a thesaurus structure based on UDC. Each UDC notation is represented by a UNIMARC subject heading record as authority data. One classification notation can be used to search simultaneously into more than one corresponding thesaurus. This way natural language terms are used in indexing and, at the same time, the link with the corresponding classification notation is kept. Additionally, the system can also manage multilingual data for the authority files. This, together with other characteristics of TinREAD are largely discussed and illustrated in the paper. Problems encountered and possible solutions to tackle them are shown.

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Abstract

As an Italian chapter of ISKO has recently been reorganized, I was kindly invited to Write a short report an current KO activities in our country. So, in the following, I will briefly illustrate the local situation of the various kinds of knowledge organization systems, as well as related developments and activities. I am grateful to Paola Capitani, Emanuela Casson, Michele Santoro, and Lorena Zuccolo for providing useful information to be included here.

Content

Terminology and thesauri BNCF is also involved in a working group collecting information an online terminological resources <http://wwwindire.it/websemantico>. The group is headed by Paola Capitani, and has organized several roundtables an terminology in special domains, such as economy, fashion, law, and education. Thesauri are generally poorly known and used in Italy, although there are significant exceptions: among faceted systems we can mention the "Thesauro italiano di sociologia," published in 1999, and the "Thesaurus regionale toscano," as well as specialized an social sciences including a general outline, available both in print (1996) and online <http:// www regione.toscana.it/ius/ns-thesaurus/>. Classification systems The Dewey Decimal Classification (DDC) is by far the most widespread classification scheme in Italian libraries. A working group, coordinated by Luigi Crocetti, regularly translates the new editions of DDC manuals, and gives refresher courses an it for librarians. BNCF makes DDC numbers for bibliographical records both of its own catalogue, and of the national bibliography (= Bibliografia nazionale italiana: BNI), which is available for other libraries in a CD-ROM edition. A very large number of public libraries use DDC for their shelfmarks, so that users are accustomed to it. This situation is different from other European countries, e.g., Spain where UDC is widespread."

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Footnote

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