-
DeHart, F.E.; Glazier, J.: Computer searching on PRECIS : an exploration of measuring comparative retrieval effectiveness (1984)
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- Abstract
- Designing research on the retrieval effectiveness of computer searches on PRECIS compared with retrieval effectiveness of searches on other types of subject analysis used in computer-based information sources is a complex process. This paper explores the complexity of measuring comparative retrieval effectiveness through a comparison of the subject analysis provided by the PRECIS system for fifty articles with the subject analysis provided for the same articles by three computer-based information sources: ERIC/CIJE, LLBA/Online and PsycINFO. Objectives are: (1) to discover factors that should be taken into account when designing this type of research; and (2) to identify extraneous variables that work against internal validity in research design .
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Takeda, N.: Problems in hierarchical structures in thesauri : their influences on the results of information retrieval (1994)
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- Abstract
- In online retrieval search results do not always match the intent in spite of using correct keywords (descriptors). One of the causes of this problem is found in the hierarchical structures of the thesaurus, which often contains relations between broader and narrower concepts, the opposite of which is not necessarily true. Some examples are described from 2 thesauri, MeSH and JICST. In these cases searchers need to make an effort to increase precision
- Source
- Online Kensaku. 15(1994) no.4, S.183-186
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Boeckx, T.: Onderwerpontsluiting in de on-line publiekscatalogus (1986)
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- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
-
Devadason, F.J.; Kumbhar, M.R.: Language and indexing language : Nalimor and Gardin revised (1988)
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- Abstract
- Studies the salient features of ordinary language as a means of designing languages for information storage and retrieval systems. Pays particular attention to the POPSI (Postulate-based Permuted Subject Indexing) language.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Gomez, L.; Lochbaum, C.C.; Landauer, T.K.: All the right words: finding what you want as an function of richness of indexing vocabulary (1990)
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- Source
- Journal of the American Society for information Science. 41(1990) no.8, S.547-559
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Bodoff, D.; Kambil, A.: Partial coordination : II. A preliminary evaluation and failure analysis (1998)
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- Abstract
- Partial coordination is a new method for cataloging documents for subject access. It is especially designed to enhance the precision of document searches in online environments. This article reports a preliminary evaluation of partial coordination that shows promising results compared with full-text retrieval. We also report the difficulties in empirically evaluating the effectiveness of automatic full-text retrieval in contrast to mixed methods such as partial coordination which combine human cataloging with computerized retrieval. Based on our study, we propose research in this area will substantially benefit from a common framework for failure analysis and a common data set. This will allow information retrieval researchers adapting 'library style'cataloging to large electronic document collections, as well as those developing automated or mixed methods, to directly compare their proposals for indexing and retrieval. This article concludes by suggesting guidelines for constructing such as testbed
- Source
- Journal of the American Society for Information Science. 49(1998) no.14, S.1270-1282
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Niggemann, E.: RSWK oder was sonst? Sacherschließung für den Online-Publikumskatalog der Universitätsbibliothek Düsseldorf - ein Werkstattbericht (1991)
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- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
-
Frommeyer, J.: Chronological terms and period subdivisions in LCSH, RAMEAU, and RSWK : development of an integrative model for time retrieval across various online catalogs (2004)
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- Abstract
- After a fundamental examination of the phenomenon of time, this paper presents the history, authority, and structure of period subdivisions and chronological terms in the three subject heading languages LCSH (Library of Congress Subject Headings), RAMEAU (Répertoire d'Autorité Matière Encyclopédique et Alphabétique Unifié), and RSWK (Regeln für den Schlagwortkatalog). Their usefulness in online searching is demonstrated using the online catalogs of the Library of Congress, the Bibliothèque nationale de France, and the Deutsche Bibliothek and is compared to the search options in selected digital encyclopedias (Encyclopaedia Britannica, Encarta, Brockhaus-Enzyklopädie). The author develops a model for common time retrieval across all three online catalogs, outlines the conditions for that model (time period code, chronological code, and chronology authority file), and proposes a search interface.
- Date
- 10. 9.2000 17:38:22
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Svenonius, E.: Design of controlled vocabularies in the context of emerging technologies (1988)
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- Abstract
- Delineates on the changing role of vocabulary control devices such as classification, subject headings, and thesaurus. Identifies the basic issue in the design and development of these devices and their role in the changing information technology. The paper identifies the differentiations needed in the new roles of these devices in data base technology
- Source
- Library science with a slant to documentation and information studies. 25(1988), S.215-227
- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
-
Miller, U.; Teitelbaum, R.: Pre-coordination and post-coordination : past and future (2002)
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- Abstract
- This article deals with the meaningful processing of information in relation to two systems of Information processing: pre-coordination and post-coordination. The different approaches are discussed, with emphasis an the need for a controlled vocabulary in information retrieval. Assigned indexing, which employs a controlled vocabulary, is described in detail. Types of indexing language can be divided into two broad groups - those using pre-coordinated terms and those depending an post-coordination. They represent two different basic approaches in processing and Information retrieval. The historical development of these two approaches is described, as well as the two tools that apply to these approaches: thesauri and subject headings.
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Anderson, J.D.; Pérez-Carballo, J.: Library of Congress Subject Headings (LCSH) (2009)
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- Date
- 27. 8.2011 14:22:13
- Source
- Encyclopedia of library and information sciences. 3rd ed. Ed.: M.J. Bates
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Schulz, U.: ¬Die niederländische Basisklassifikation: eine Alternative für die "Sachgruppen" im Fremddatenangebot der Deutschen Bibliothek (1991)
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- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
-
Lambert, N.: Of thesauri and computers : reflections on the need for thesauri (1995)
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- Abstract
- Most indexed databases now include their thesauri and/or coding in their bibliographic files, searchable at the databases' online connect rates. Assesses the searchability of these on the different hosts. Thesauri and classifications are also available as diskette or CD-ROM products. Describes a number of these, highlighting the diskette thesaurus from IFI/Plenum Data for its flexible databases, the CLAIMS Uniterm and Comprehensive indexes to US chemical patents
- Source
- Searcher. 3(1995) no.8, S.18-22
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Milstead, J.L.: Thesauri in a full-text world (1998)
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- Abstract
- Despite early claims to the contemporary, thesauri continue to find use as access tools for information in the full-text environment. Their mode of use is changing, but this change actually represents an expansion rather than a contrdiction of their utility. Thesauri and similar vocabulary tools can complement full-text access by aiding users in focusing their searches, by supplementing the linguistic analysis of the text search engine, and even by serving as one of the tools used by the linguistic engine for its analysis. While human indexing contunues to be used for many databases, the trend is to increase the use of machine aids for this purpose. All machine-aided indexing (MAI) systems rely on thesauri as the basis for term selection. In the 21st century, the balance of effort between human and machine will change at both input and output, but thesauri will continue to play an important role for the foreseeable future
- Date
- 22. 9.1997 19:16:05
- Imprint
- Urbana-Champaign, IL : Illinois University at Urbana-Champaign, Graduate School of Library and Information Science
- Source
- Visualizing subject access for 21st century information resources: Papers presented at the 1997 Clinic on Library Applications of Data Processing, 2-4 Mar 1997, Graduate School of Library and Information Science, University of Illinois at Urbana-Champaign. Ed.: P.A. Cochrane et al
- Theme
- Verbale Doksprachen im Online-Retrieval
-
Trinkhaus, M.: Möglichkeiten und Aspekte des sachlichen Zugriffs in Online-Katalogen (1990)
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- Theme
- Verbale Doksprachen im Online-Retrieval
Klassifikationssysteme im Online-Retrieval
-
Bates, M.J.: Rethinking subject cataloging in the online environment (1989)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Simonds, M.J.: Database limitations & online catalogs (1984)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Cochrane, P.A.: Subject access in the online catalog (1982)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Hoffman, H.: LCSH online (1987)
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- Theme
- Verbale Doksprachen im Online-Retrieval
-
Stumpf, G.: RSWK und Online-Katalog (1993)
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- Theme
- Verbale Doksprachen im Online-Retrieval
