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  • × theme_ss:"Verbale Doksprachen für präkombinierte Einträge"
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  1. Studwell, W.E.: Why not an 'AACR' for subject headings? (1985) 0.08 
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    Abstract
    Although the rules for descriptive cataloging have been recodified twice in the past twenty years, there never has been any kind of comprehensive theoretical code for subject headings, despite some suggestions for a code over the years. This essay explains the need for a code, provides historical background, and presents some broad proposals as to the philosophy, structure, and form of the code and what the code should cover. Included is the relation between the proposed code and the Library of Congress' 1984 Subject Cataloging Manual.
    Date
    7. 1.2007 13:22:01
  2. Studwell, W.E.: ¬A tale of two decades, or, the decline of the fortunes of LC subject headings (1994) 0.06 
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    Abstract
    Claims that there is no clear plan, comprehensive philosophy, or macro approach to the revision of Library of Congress Subject Headings. Having missed a great opportunity in the mid-1980s to develop a subject analog of AACR2, LC is now in a period of decline. Discusses alternatives to LC subject access such as PRECIS and keyword searching. Urges LC to halt and reverse the decline by bold, decisive action in the 1990s
    Source
    Western Association of Map Libraries information bulletin. 25(1994) no.2, S.73-74
  3. Dewar, M.: Restructuring the Library of Congress Subject Headings : Subject access and bibliographic instruction: two sides of the OPAC problem (1988) 0.02 
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    Imprint
    Halifax, N.S. : Dalhousie University, School of Library and Information Studies
  4. Hearn, S.: Comparing catalogs : currency and consistency of controlled headings (2009) 0.02 
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    Abstract
    Evaluative and comparative studies of catalog data have tended to focus on methods that are labor intensive, demand expertise, and can examine only a limited number of records. This study explores an alternative approach to gathering and analyzing catalog data, focusing on the currency and consistency of controlled headings. The resulting data provide insight into libraries' use of changed headings and their success in maintaining currency and consistency, and the systems needed to support the current pace of heading changes.
    Date
    10. 9.2000 17:38:22
  5. Cheti, A.; Viti, E.: Functionality and merits of a faceted thesaurus : the case of the Nuovo soggettario (2023) 0.02 
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    Abstract
    The Nuovo soggettario, the official Italian subject indexing system edited by the National Central Library of Florence, is made up of interactive components, the core of which is a general thesaurus and some rules of a conventional syntax for subject string construction. The Nuovo soggettario Thesaurus is in compliance with ISO 25964: 2011-2013, IFLA LRM, and FAIR principle (findability, accessibility, interoperability, and reusability). Its open data are available in the Zthes, MARC21, and in SKOS formats and allow for interoperability with l library, archive, and museum databases. The Thesaurus's macrostructure is organized into four fundamental macro-categories, thirteen categories, and facets. The facets allow for the orderly development of hierarchies, thereby limiting polyhierarchies and promoting the grouping of homogenous concepts. This paper addresses the main features and peculiarities which have characterized the consistent development of this categorical structure and its effects on the syntactic sphere in a predominantly pre-coordinated usage context.
    Date
    26.11.2023 18:59:22
    Footnote
    Beitrag in Themenheft: Implementation of Faceted Vocabularies.
  6. Hartley, J.; Sydes, M.: Which layout do you prefer? : an analysis of readers' preferences for different typographic layouts of structured abstracts (1996) 0.01 
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    Abstract
    Structured abstracts are abstracts which include subheadings such as: background, aims, participants methods and results. These are rapidly replacing traditional abstracts in medical periodicals, but the number and detail of the subheadings used varies, and there is a range of different typographic settings. Reviews a number of studies designed to investigate readers' preferences for different typographic settings and layout. Over 400 readers took part in the study: students; postgraduates; research workers and academics in the social sciences. The most preferred version emerged from the last of 3 studies and 2 additional studies were then carried out to determine preferences for the overall position and layout of this most preferred version on a A4 page. The most preferred version for the setting of the subheadings are printed in bold capital letters
    Source
    Journal of information science. 22(1996) no.1, S.27-37
  7. O'Neill, E.T.; Chan, L.M.; Childress, E.; Dean, R.; El-Hoshy, L.M.; Vizine-Goetz, D.: Form subdivisions : their identification and use in LCSH (2001) 0.01 
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    Abstract
    Form subdivisions have always been an important part of the Library of Congress Subject Headings. However, when the MARC format was developed, no separate subfield code to identify form subdivisions was defined. Form and topical subdivisions were both included within a general subdivision category. In 1995, the USMARC Advisory Group approved a proposal defining subfield v for form subdivisions, and in 1999 the Library of Congress (LC) began identifying form subdivisions with the new code. However, there are millions of older bibliographic records lacking the explicit form subdivision coding. Identifying form subdivisions retrospectively is not a simple task. An algorithmic method was developed to identify form subdivisions coded as general subdivisions. The algorithm was used to identify 2,563 unique form subdivisions or combinations of form subdivisions in OCLC's WorldCat. The algorithm proved to be highly accurate with an error rate estimated to be less than 0.1%. The observed usage of the form subdivisions was highly skewed with the 100 most used form subdivisions or combinations of subdivisions accounting for 90% of the assignments.
    Date
    10. 9.2000 17:38:22
  8. Anderson, J.D.; Pérez-Carballo, J.: Library of Congress Subject Headings (LCSH) (2009) 0.01 
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    Abstract
    Library of Congress Subject Headings (LSCH), which celebrated its 100th birthday in 1998, is the largest cataloging and indexing language in the world for the indication of the topics and formats of books and similar publications. It consists of a controlled list of main headings, many with subdivisions, with a rich system of cross references. It is supported by the U.S. government, and undergoes systematic revision. In recent decades its managers have begun to confront challenges such as biased terminology, complicated syntax (how terms are put together to form headings), and effective displays in electronic media. Many suggestions have been made for its improvement, including moving to a fully faceted system.
    Date
    27. 8.2011 14:22:13
    Source
    Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
  9. MacEwan, A.: Crossing language barriers in Europe : Linking LCSH to other subject heading languages (2000) 0.01 
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    Abstract
    A study group representing four European national libraries (the Swiss National Library, Die Deutsche Bibliothek, the Bibliothèque nationale de France and The British Library) recently conducted a study on the possibility of establishing multilingual thesaural links between the headings in the LCSH authority file and the authority files of the German indexing system SWD/RSWK and the French indexing system RAMEAU. The study demonstrated a high level of correspondence in main headings, but also revealed a number of issues requiring further investigation. The study group's findings led to recommendations on the scope for the development of a prototype system for linking the three Subject Heading Languages (SHLs) in the databases of the four institutions
    Date
    27. 5.2001 16:22:10
    Source
    The LCSH century: one hundred years with the Library of Congress Subject Headings system. Ed.: A.T.Stone
  10. Chan, L.M.; Hodges, T.: Entering the millennium : a new century for LCSH (2000) 0.01 
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    Abstract
    Library of Congress Subject Headings (LCSH), a system originally designed as a tool for subject access to the Library's own collection in the late nineteenth century, has become, in the course of the last century, the main subject retrieval tool in library catalogs throughout the United States and in many other countries. It is one of the largest non-specialized controlled vocabularies in the world. As LCSH enters a new century, it faces an information environment that has undergone vast changes from what had prevailed when LCSH began, or, indeed, from its state in the early days of the online age. In order to continue its mission and to be useful in spheres outside library catalogs as well, LCSH must adapt to the multifarious environment. One possible approach is to adopt a series of scalable and flexible syntax and application rules to meet the needs of different user communities
    Date
    27. 5.2001 16:22:21
    Source
    The LCSH century: one hundred years with the Library of Congress Subject Headings system. Ed.: A.T.Stone
  11. Sauperl, A.: Precoordination or not? : a new view of the old question (2009) 0.01 
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    Abstract
    Purpose - This paper aims to discuss some long-standing issues of the development of a subject heading language as pre- or postcoordinated. Design/methodology/approach - In a review of literature on pre- and postcoordination and user behaviour, 20 criteria originally discussed by Svenonius are considered. Findings - The advantages and disadvantages of pre- and postcoordinated systems are on a very similar level. Most subject heading languages developed recently are precoordinated. They all require investments in highly skilled intellectual work, and are therefore expensive and difficult to maintain. Postcoordinated systems seem to have more advantages for information providers, but less for users. However, most of these disadvantages could be overcome by known information retrieval models and techniques. Research limitations/implications - The criteria originally discussed by Svenonius are difficult to evaluate in an exact manner. Some of them are also irrelevant because of changes in information retrieval systems. Practical implications - It was found that the decision on whether to use a pre- or postcoordinated system cannot be taken independent of consideration of the subject authority file and the functions of an information retrieval system, which should support users on one hand and information providers and indexers on the other. Originality/value - This literature review brings together some findings that have not been considered together previously.
    Content
    Bezug zu: Svenonius, E.: Precoordination or not?. In: Subject indexing: principles and practices in the 90's. Proceedings of the IFLA Satellite Meeting Held in Lisbon, Portugal, 17-18 August 1993, and sponsored by the IFLA Section on Classification and Indexing and the Instituto da Biblioteca Nacional e do Livro, Lisbon, Portugal. Ed.: R.P. Holley et al. München: Saur 1995. S.231-255.
    Date
    20. 6.2010 14:22:43
    Source
    Journal of documentation. 65(2009) no.5, S.817-833
  12. Viti, E.: My first ten years : nuovo soggettario growing, development and integration with other knowledge organization systems (2017) 0.01 
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    Abstract
    The Nuovo Soggettario is a subject indexing system edited by the Biblioteca Nazionale Centrale di Firenze. It was presented to librarians from across Italy on 8 February 2007 in Florence as a new edition of the Soggettario (1956), and it has become the official Italian subject indexing tool. This system is made up of two individual and interactive components: the general thesaurus, accessible on the web since 2007 and the rules of a conventional syntax for the construction of subject strings. The Nuovo soggettario thesaurus has grown significantly in terms of terminology and connections with other knowledge organization tools (e.g., encyclopedias, dictionaries, resources of archives and museums, and other information data sets), offering the users the possibility to browse through documents, books, objects, photographs, etc. The conversion of the Nuovo soggettario thesaurus into formats suitable for the semantic web and linked data world improves its function as an interlinking hub for direct searching and for organizing content by different professional communities. Thanks to structured data and the SKOS format, the Nuovo soggettario thesaurus is published on the Data Hub platform, thus giving broad visibility to the BNCF and its precious patrimony.
    Content
    Beitrag eines Special Issue: ISKO-Italy: 8' Incontro ISKO Italia, Università di Bologna, 22 maggio 2017, Bologna, Italia.
  13. Austin, D.; Digger, J.A.: PRECIS: The Preserved Context Index System (1985) 0.01 
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    Abstract
    Probably the most interesting, original and controversial indexing system of the 1970s has been PRECIS (the Preserved Context Index System) developed by Derek Austin. It attracted such attention that the short courses given at the British National Bibliography offices in London -initiated as a means of teaching the staff of BNB who did subject indexing-were repeated all over the world, in the form of three-day or three-week sessions. A few fortunate non-BNB indexers were taken into London classes, taught by Austin and Digger, and had the advantage of a week's work with the regular staff theresomething that could not be done elsewhere. In addition, descriptions of the system were published from time to time as progress was made an the system itself and clarification or updating were needed. This article has been selected as an example of clarification. A second edition of the original 1974 Manual describing PRECIS appeared in early 1984, so the system may now be regarded as fully mature. PRECIS, which is the culmination of Austin's research for the Classification Research Group plus considerable additional input from the science of linguistics, is a highly sophisticated indexing system, deliberately created to be used with a computer. The motive behind it was that the indexer should do the brain work and the computer the nitty-gritty work of manipulating index terms. Chosen combinations and permutations are used as head words under strict rules to ensure that the context which defines the specific meaning of these words is always present, thus avoiding the ambiguity problem in indexing. The system also has classifi ation features, in part drawn from the Group's long interest in faceted classification. The actual index produces a large number of index entries, each carrying with it the basic context of the item being described. A weIl-defined terminology, in addition to contextdependency, is a feature of PRECIS. Role operators define the types of terms used and control the manipulations of the terms, which are originally entered as a string. The indexer is able to analyze and reduce to string form any document, process, or material that can be described in words, making it ideal for most audiovisual material.
    The system itself has two major aspects: - a syntactic approach in which relationships between terms are identified and tagged. Suitable algorithms for manipulation produce a very thorough index in which each head word is kept in context. - a semantic approach in which terminology is weIl defined by ensuring that the relationships of equivalence, hierarchy, and association are clearly established. Charts of relationships are created by inductive means (i.e., from the ground up). A special code for computer manipulation is used with each line of the string. This translates the string format into one that, with specially derived algorithms, can be used by the computer, to produce the actual index headings with all parts rotated by following the algorithm. The PRECIS system has been translated and utilized for languages other than English, notably French, German, and Danish. Modifications needed for idiosyncracies of each language have been made. Some, such as those modifications needed for German, have turned out to have usefulness with English as weIl. All in all, the system has such advanced indexing concepts that it provides a kind of indexing not possible before the computer came into common usage. Austin, who joined the staff of the British National Bibliography in 1963, is currently a member of the British Library staff. His early work included a NATO-sponsored research assignment for the Classification Research Group (q.v.). This, in turn, led to the development of PRECIS.
    Source
    Theory of subject analysis: a sourcebook. Ed.: L.M. Chan, et al
  14. Conway, M. O'Hara: Characteristics of subject headings in the Library of Congress BOOKSM database (1993) 0.01 
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    Abstract
    A thourough understanding of current subject cataloging practice, especially Library of Congress practice, will assist librarians in making the best use of new and emerging technology to ease the task of constructing subject headings. To gain insight into the most current subject cataloging practices at the Library of Congress, a random sample of one thousand bibliographic records with one or more 6XX fields and Library of Congress card numbers assigned from 1988 to the present was drawn from the BOOKSM database. Library of Congress catalogers rely heavily on the system of free-floating subdivisions in the process of constructing subject headings. Attempts to improve the subject cataloging process must take into account this fundamental characteristic of the Library of Congress subject headings system
  15. Devadason, F.J.: Computerization of Deep Structure Based Indexes (1985) 0.01 
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    Abstract
    The Deep Structure Indexing System is based on: (1) a set of postulated elementary categories of the elements fit to form componentes of names of subjects; (2) a set of syntax rules with reference to the categories; (3) a vocabulary control tool such as Classaurus; (4) a set of indicator digits to denote the categories and their subdivisions; and (5) a set of codes to denote a few of the decisions of the indexer. Names of subjects formulated on the basis mentioned above are input to a set of computer programs to generate several different types of subject index entires. This paper describes briefly the Deep Structure Index System
  16. Ho, J.: ¬An analysis of the structure of a subject heading list (1993) 0.01 
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    Source
    Journal of library and information science. 19(1993) no.2, S.32-54
  17. Bodoff, D.; Kambil, A.: Partial coordination : I. The best of pre-coordination and post-coordination (1998) 0.01 
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    Abstract
    The introduction of computerized post-coordination has solved many of the problems of pre-coordinated subject access. However, the adoption of computerized post-coordination results in the loss of some pre-coordination benefits. Specifically, the effect of hiding terms within the context of others is lost in post-coodination which give lead status to every document term. This results in spurious matches of terms out of context. Library patrons and Internet searchers are increasingly dissatisfied with subject access performance, in part because of unmanageably large retrieval sets. The need to enhance precision and limit the size of retrieval sets motivates this work which proposes partial coordination, an approach which incorporates the advantages of computer search with the ability of pre-coordination to limit spurious partial matches and thereby enhance precision
    Source
    Journal of the American Society for Information Science. 49(1998) no.14, S.1254-1269
  18. Yi, K.; Chan, L.M.: Revisiting the syntactical and structural analysis of Library of Congress Subject Headings for the digital environment (2010) 0.01 
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    Abstract
    With the current information environment characterized by the proliferation of digital resources, including collaboratively created and shared resources, Library of Congress Subject Headings (LCSH) is facing the challenges of effective and efficient subject-based organization and retrieval of digital resources. To explore the feasibility of utilizing LCSH in a digital environment, we might need to revisit its basic characteristics. The objectives of our study were to analyze LCSH in both syntactic and relational structures, to discover the structural characteristics of LCSH, and to identify problems and issues for the feasibility of LCSH as an effective subject access tool. This study reports and discusses issues raised by the syntactic and hierarchical structures of LCSH that present challenges to its use in a networked environment. Given the results of this study, we recommend a number of provisional future directions for the development of LCSH towards further becoming a viable system for digital and networked resources.
    Source
    Journal of the American Society for Information Science and Technology. 61(2010) no.4, S.677-687
  19. Mineur, B.W.: Relations in chains (1973) 0.00 
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    Abstract
    The criticisms made against chain indexing are reviewed, and PRECIS briefly considered as a possible (but improbable) general substitute for indexing. The failures of chain indexing arise mainly from an inherited overemphasis on generic relationships, encouraged by careless use of the term 'chain'. The use of symbols to represent relations between terms is suggested for the chain index, to emphasize syntagmatic relations and prevent ambiguity. These relationships can be used to manipulate the index terms into likely additional index approaches, employing the logical concepts of symmetry and transitivity which derive from a structure inherent between relations, a sort of 'metarelations'. The transitivityy of the relations of action or property to object over the relation of material to object are particularly considered, and clues to this relational structure obtained from Aristotle's theory of causation
    Source
    Journal of librarianship. 5(1973), S.175-202
  20. Hearn, S.: Machine-assisted validation of LC Subject Headings : implications for authority file structure (2000) 0.00 
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    Abstract
    Many kinds of structure can be discerned in the headings and rules governing the Library of Congress Subject Headings. By addressing these structures at different levels, librarians can develop different approaches to the machine-assisted validation of subject headings, from the checking of individual words to the validation of complex forms of heading/subdivision compatibility. Using computer programs to assist with maintenance of subject headings is becoming increasingly necessary as technical services librarians strive to create consistent and useful patterns of subject collocation in library catalogs
    Source
    The LCSH century: one hundred years with the Library of Congress Subject Headings system. Ed.: A.T.Stone

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