Search (2294 results, page 1 of 115)

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Abstract

Enthält Geschichte der Library of Congress Subject Headings und Sears' list

Object

Sears List of Subject Headings

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Abstract

Vergleich von US-Lexika und Enzyklopädien einzelner Wissensgebiete auf CD

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Content

Enthält 206.300 subject headings; Zuwachs des letzten Jahres: 8.000; alphabetische Liste aller früheren, nun nicht mehr gültigen headings (Earlier forms); umfangreiche Einleitung

Footnote

Vgl. auch Cataloging service bulletin. No.46(1989) S.65-66; ab 12th ed. 1989 jährliche Erscheinungsweise. - Neben Papierausgabe Mikrofiche und CD-ROM Ausgabe (CDMARC Subjects, $475,-; vgl. Demo-Diskette) mit jeweils vierteljährlicher Ergänzung. - Erste Ausgabe: 1911 'List of Subject Headings for use in dictionary catalogs'. Chicago: ALA 1911. - Vgl. zur Geschichte: Dailey, J.E. Subject headings in ELIS

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Abstract

Some LCSH have the potential to be used for either subject or form/genre access. A selection of LCSH, cognates with terms from Moving image materials: Genre terms, was searched in OCLC's OLUC to determine the degrees to which they were used for each of these two types of access. it was discovered that the set of 'subject headings' under study was used for form/genre access between 6% and 99% of the time, with a mean average of just over 50%. The guidance provided to catalogers by information contained in LoC authority records is also discussed

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Abstract

We developed a project utilizing the local form/genre heading, "property data," and specific subheadings to help chemists, engineers, and those librarians assisting them to more easily locate library resources containing chemical and physical properties of substances. This article describes the project and examines possibilities for improving access to physical sciences literature in relation to Library of Congress Subject Headings and ongoing developments in authority records for form/genre terms. It also introduces functionality of such headings in the new "next generation" catalogs.

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LCSH

Subject headings

Subject

Subject headings

Theme

Konzeption und Anwendung des Prinzips Thesaurus

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Abstract

The system is available both in print and online versions. Names a few new subject headings in areas like science, technology, engineering and medicine (STEM). In this edition, there are a total of 1,600 new headings making it a total of 12,000+ preferred headings meant for subject access in small and medium sized libraries. This unprecedented increase of about 1,600 headings is mostly due the complete incorporation of the Canadian Sears last published independently in 2006. Also critically examines inconsistencies in a few headings. Concludes to say the new edition in resplendent, hard binding maintains its stellar reputation of a handy list of general subject headings both for applications and a teaching resource.

Footnote

Introduction und Rez. in: Knowledge Organization 45(2018) no.8, S.712-714. u.d.T. "Satija, M. P. 2018: "The 22nd edition (2018) of the Sears List of Subject Headings: A brief introduction." (DOI:10.5771/0943-7444-2018-8-712).

Object

Sears List of Subject Headings

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Abstract

The three phases of the development of LC subject headings are surveyed. The inconsistent and not highly effective practices of the past, or Cutterism, should be put aside in favor of standardization or codism. But codism is not an end in itself. It is just a prelude to the ultimate goal - consumerism, or keeping the needs of the library user at the forefront

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BK

06.00 / Information und Dokumentation: Allgemeines

Classification

06.00 / Information und Dokumentation: Allgemeines

Footnote

Rez. in: KO 32(2005) no.4, S.159-160 (G.J.A. Riesthuis): "This thesaurus is a revised edition of: ASIS thesaurus of information science and librarianship, edited by Jessica L. Milstead, 2nd ed. (1998). The change in the title is result of the change of the name of the ASIS (American Society of Information Science) into American Society for Information Science and Technology. Since 2002 the 2nd edition was used by Information Science Abstracts (now Information Science & Technology Abstracts). In the 2nd edition the goal of the thesaurus was formulated as "[include concepts from] information science and librarianship to a depth that will adequately support indexing in those fields with [...] related fields [...] computer science, linguistics and cognitive sciences [...]" (p. vii). The present editors started to update the thesaurus to reflect "the current state of the field and to implement it for indexing the Society's publications for the ASIS&T Digital Library" (p. v). The draft 3rd edition is used to index a great part of the Society's four publications. This means that the 3`1 edition is, more than its predecessors, based on literary warrant as far as this warrant is reflected in ASIS&T publications. The Netherlands have a descriptor, but Romania or Portugal not. The Bliss Bibliographic Classification is mentioned, but the far more often used Russian Library Bibliographical Classification (BBK) is missing. The thesaurus is presented in three parts: 1. An alphabetical listing of all terms. Here one finds the preferred and non-preferred terms with their relations denoted in the customary form (SN, BT, NT, RT, USE and UF). The ordering is word-byword. 2. An hierarchical display of the terms. This display contains the preferred terms only. 3. A permuted display of all terms. Unlike the 2nd edition, this list contains the non-preferred terms too. The thesaurus is like its predecessors a faceted one. There are seven main facets: 1. People and organizations, 2. Actions, events, and processes, 3. Physical objects, 4. Theoretical concepts and influences on information, 5. Information, information delivery formats and channels, 6. Methods of study, 7. Geographic information. The first five facets are subdivided in subfacets, the last have just one subfacet each. In total there arc 18 subfacets, referred to as "top terms" in the language of the thesaurus. This structure is not very different from the structure of the second edition, although the number of subfacets and the terminology has changed. There is one new facet "geographic information" with one subfacet: "countries and regions". In this facet one can see very clearly see that the thesaurus is based on literary warrant: only relatively few countries arc mentioned. The facet "methods of study" is expanded strongly. Under each of the top terms additional concepts are presented in a hierarchical structure. The maximum depth of the hierarchy is nine, although most subfacets have no more than four or five levels. The record for the "bibliometrics" entry shows clearly the changes. The domain and the main structure have not changed, but narrower terms not previously mentioned are added."
Weitere Rez. in: Information - Wissenschaft und Praxis 58(2007) H.1, S.59-60 (J. Fassbender) mit Berücksichtigung der Software Thesaurus Master.

LCSH

Subject headings / Information science
Subject headings / Information technology
Subject headings / Library science

Subject

Subject headings / Information science
Subject headings / Information technology
Subject headings / Library science

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Classification

AN 94200 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Informationswissenschaft / Grundlagen, Theorie / Thesauruskunde

LCSH

Subject headings

RVK

AN 94200 Allgemeines / Buch- und Bibliothekswesen, Informationswissenschaft / Informationswissenschaft / Grundlagen, Theorie / Thesauruskunde

Subject

Subject headings

Theme

Konzeption und Anwendung des Prinzips Thesaurus

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LCSH

Subject headings

Subject

Subject headings

Theme

Konzeption und Anwendung des Prinzips Thesaurus

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Footnote

Enthält eine Liste der 16 Auflagen der Sears' List mit den jeweiligen Herausgeberinnen / Herausgebern und Neuerungen

Object

Sears List of Subject Headings

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Abstract

The Library of Congress Subject Headings (LCSH) has been developed over the course of more than a century, predating the semantic web by some time. Until the 1986, the only concept-toconcept relationship available was an undifferentiated "See Also" reference, which was used for both associative (RT) and hierarchical (BT/NT) connections. In that year, in preparation for the first release of the headings in machine readable MARC Authorities form, an attempt was made to automatically convert these "See Also" links into the standardized thesaural relations. Unfortunately, the rule used to determine the type of reference to generate relied on the presence of symmetric links to detect associatively related terms; "See Also" references that were only present in one of the related terms were assumed to be hierarchical. This left the process vulnerable to inconsistent use of references in the pre-conversion data, with a marked bias towards promoting relationships to hierarchical status. The Library of Congress was aware that the results of the conversion contained many inconsistencies, and intended to validate and correct the results over the course of time. Unfortunately, twenty years later, less than 40% of the converted records have been evaluated. The converted records, being the earliest encountered during the Library's cataloging activities, represent the most basic concepts within LCSH; errors in the syndetic structure for these records affect far more subordinate concepts than those nearer the periphery. Worse, a policy of patterning new headings after pre-existing ones leads to structural errors arising from the conversion process being replicated in these newer headings, perpetuating and exacerbating the errors. As the LCSH prepares for its second great conversion, from MARC to SKOS, it is critical to address these structural problems. As part of the work on converting the headings into SKOS, I have experimented with different visualizations of the tangled web of broader terms embedded in LCSH. This poster illustrates several of these renderings, shows how they can help users to judge which relationships might not be correct, and shows just exactly how Doorbells and Mammals are related.

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Classification

ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme

LCSH

Subject headings

RVK

ST 271 Informatik / Monographien / Software und -entwicklung / Datenbanken, Datenbanksysteme, Data base management, Informationssysteme / Einzelne Datenbanksprachen und Datenbanksysteme

Subject

Subject headings

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Abstract

18 August 2009 -- Today W3C announces a new standard that builds a bridge between the world of knowledge organization systems - including thesauri, classifications, subject headings, taxonomies, and folksonomies - and the linked data community, bringing benefits to both. Libraries, museums, newspapers, government portals, enterprises, social networking applications, and other communities that manage large collections of books, historical artifacts, news reports, business glossaries, blog entries, and other items can now use Simple Knowledge Organization System (SKOS) to leverage the power of linked data. As different communities with expertise and established vocabularies use SKOS to integrate them into the Semantic Web, they increase the value of the information for everyone.

Content

SKOS Adapts to the Diversity of Knowledge Organization Systems A useful starting point for understanding the role of SKOS is the set of subject headings published by the US Library of Congress (LOC) for categorizing books, videos, and other library resources. These headings can be used to broaden or narrow queries for discovering resources. For instance, one can narrow a query about books on "Chinese literature" to "Chinese drama," or further still to "Chinese children's plays." Library of Congress subject headings have evolved within a community of practice over a period of decades. By now publishing these subject headings in SKOS, the Library of Congress has made them available to the linked data community, which benefits from a time-tested set of concepts to re-use in their own data. This re-use adds value ("the network effect") to the collection. When people all over the Web re-use the same LOC concept for "Chinese drama," or a concept from some other vocabulary linked to it, this creates many new routes to the discovery of information, and increases the chances that relevant items will be found. As an example of mapping one vocabulary to another, a combined effort from the STITCH, TELplus and MACS Projects provides links between LOC concepts and RAMEAU, a collection of French subject headings used by the Bibliothèque Nationale de France and other institutions. SKOS can be used for subject headings but also many other approaches to organizing knowledge. Because different communities are comfortable with different organization schemes, SKOS is designed to port diverse knowledge organization systems to the Web. "Active participation from the library and information science community in the development of SKOS over the past seven years has been key to ensuring that SKOS meets a variety of needs," said Thomas Baker, co-chair of the Semantic Web Deployment Working Group, which published SKOS. "One goal in creating SKOS was to provide new uses for well-established knowledge organization systems by providing a bridge to the linked data cloud." SKOS is part of the Semantic Web technology stack. Like the Web Ontology Language (OWL), SKOS can be used to define vocabularies. But the two technologies were designed to meet different needs. SKOS is a simple language with just a few features, tuned for sharing and linking knowledge organization systems such as thesauri and classification schemes. OWL offers a general and powerful framework for knowledge representation, where additional "rigor" can afford additional benefits (for instance, business rule processing). To get started with SKOS, see the SKOS Primer.

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Abstract

The latest edition of this standard reference work has grown to 1800 pages listing nearly 23,000 titles. Once again, the material is divided into five sections: subject headings, subject guides, bibliographic guides, title indexes, and illustrator indexes. This arrangement enables the reader to locate books on a particular topic and to determine the subject of a specific book when only the author, illustrator, or title is known. The more than 1200 subject headings are augmented by subheadings and cross references, which is especially useful because this tool is as much for reader's advisory as it is for collection building. Full bibliographic information for each title included is provided in the bibliographic guide, although price and in-print status are not. This is not a problem, however, since reader's advisory use doesn't usually require pricing information, and there are now several electronic means of obtaining such information quickly and easily. As in previous editions, there is an excellent introductory essay titled "Genesis of the English-Language Picture Book," with as many suggested titles for further reading as might be found on a children's literature course syllabus. About the only drawback is the lack of annotations, but had these been added for each title included, the book would rival the Manhattan telephone directory in size. All in all, this remains an essential resource for just about any reference collection.

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Abstract

Discussion of the results and consequences of the automation project named thesaurus/concordance project, carried out at the DUT Library. The aim of the project was, by making the subject headings and their corresponding classification codes machine readable, to produce periodically cumulative lists, classifies lists, lists per subject fields, alphabetical lists of inverted subheadings and geographical names with their corresponding main headings and notations

Source

Numerische und nicht-numerische Klassifikation zwischen Theorie und Praxis. Proc. der 5. Fachtagung der Gesellschaft für Klassifikation, Hofgeismar, 7.-10.4.1981. Hrsg.: Peter Ihm u.a

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Abstract

The history of the Library of Congress Subject Headings is traced, from its beginnings with the implementation of a dictionary catalog at the Library of Congress in 1898 to the present day. The author describes the most significant changes which have occurred in LCSH policies and practices during the 100-year period. Events noted near the end of the century indicate an increased willingness on the part of' the Library of Congress to involve the larger library community in the creation or revision of subject headings and other decision-making regarding the LCSH system. Finally, the author provides a summary of the other contributions to this collection of essays, a collection which celebrates the "centennial" of the world's most popular library subject heading language

Content

Mit einer Publikationsgeschichte der LCSH (vgl. Tabellen) und dazu gehörenden Publikationen

Source

The LCSH century: one hundred years with the Library of Congress Subject Headings system. Ed.: A.T.Stone

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Abstract

Surveys conducted during the last four years under the auspices of the International Federation of Library Associations and Organizations (IFLA) reveal that the Library of Congress Subject Headings is heavily used in national libraries outside of the United States, particularly in English-speaking countries. Many other countries report using a translation or adaptation of LCSH as their principal subject heading language. Magda Heiner-Freiling presents an analysis of the IFLA data, which also includes information on the classification schemes used by the libraries and whether or not the libraries have produced a manual on the creation and application of subject headings. The paper concludes with an Appendix showing the complete data from the 88 national libraries that respond to the surveys

Content

Mit einer tabellarischen Übersicht der eingesetzten Systeme und Regeln

Object

Sears List of Subject Headings

Source

The LCSH century: one hundred years with the Library of Congress Subject Headings system. Ed.: A.T.Stone

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LCSH

Subject headings / Terminology

Subject

Subject headings / Terminology

Theme

Konzeption und Anwendung des Prinzips Thesaurus