-
Spiteri, L.F.: ¬The essential elements of faceted thesauri (1999)
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- Abstract
- The goal of this study is to evaluate, compare, and contrast how facet analysis is used to construct the systematic or faceted displays of a selection of information retrieval thesauri. More specifically, the study seeks to examine which principles of facet analysis are used in the thesauri, and the extent to which different thesauri apply these principles in the same way. A measuring instrument was designed for the purpose of evaluating the structure of faceted thesauri. This instrument was applied to fourteen faceted information retrieval thesauri. The study reveals that the thesauri do not share a common definition of what constitutes a facet. In some cases, the thesauri apply both enumerative-style classification and facet analysis to arrange their indexing terms. A number of the facets used in the thesauri are not homogeneous or mutually exclusive. The principle of synthesis is used in only 50% of the thesauri, and no one citation order is used consistently by the thesauri.
-
Francu, V.: Building a multilingual thesaurus based on UDC (1996)
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- Abstract
- Once the library has been through a process of transition from traditional library procedures to automated ones, natural language searching became a necessity for both indexers and searchers. Therefore, aside from the precoordinated classified catalogue we started to build a dictionary of terms in order to make postcoordinate search possible in keeping with the UDC notations assigned to each bibliographic record. After a while we came to the conclusion that the dictionary needed a control of its terms so that synonymous concepts and semantic ambuguities be avoided. The project presented in this paper shows how reality imposed the improvement of the quality of indexing and hence of the searching possibilities. Is also shows the reasons why we consider a multilingual thesaurus based on UDC an ideal indexing and searching device. The experiment applied on class 8 of UDC illustrates the way the UDC tables can be quite successfully used in building a thesaurus due to their qulities and how their limitations can be overcome by a thesaurus. An appendix to the paper contains a sample of the multilingual thesaurus given in both alphabetical and systematic layouts
-
Chmielewska-Gorczyca, E.: Tezaurus prawa Biblioteki Sejmowej (1996)
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- Abstract
- Describes the thesaurus that has been created at the Library of the Polish Parliament and is one element of the STEBIS system (System Tezaurusow Biblioteki Sejmowej). Discusses and illustrates with examples the rules of selecting vocabulary terms. The main aim is to map the contents of Polish and foreign documents and to preserve compatibility with the EUROVOC Thesaurus of the European Parliament. Emphasizes the need for the systematization of terms within one logical setup, with regard to the alphabetical and systematic part of the thesaurus and the multilingual character of the EUROVOC Thesaurus
-
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
-
Gagnon-Arguin, L.: Analyse documentaire 3 : thesaurus et fichier d'autorité à l'Université Concordia (1996/97)
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- Abstract
- Since the end of the 1980s, Concordia University Archives in Quebec, Canada, has indexed the minutes of the meetings of the institution's Board of Governors. A thesaurus and name authority file have been developed to support the indexing activities. Presents several theoretical concepts associated with indexing: thesaurus; authority control; content analysis; and content representation. Details the indexing tasks involved. Offers examples, combining theory and practice, demonstrating that, even with minimal resources, an indexing system can be introduced in any institution
-
Merilainen, O.: Descriptor equivalence in the context of bilingual indexing (1997)
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- Abstract
- Discusses the concept of descriptor equivalence, with its 2 subcomponents of dictionary equivalence and indexing equivalence, in the context of the compatibility of differnt thesauri used in bilingual indexing. In multilingual indexing and searching, the equivalence relationship between terms means either that all equal terms are descriptors or that only one of the terms is selected for the descriptor and users are directed with USE refrences to use it instead of the other potential terms. Discusses these issues with particular reference to the LUASPORT study: a study of the compatibility of the Finnish language sports thesaurus (LUAS) with the Canadian Sport Thesauri (SPORT) in terms of compatibility of subject descriptors. In LUASPORT, LUAS was the source thesaurus and SPORT was the target thesaurus
-
Milstead, J.L.; Berger, M.C.: ¬The Engineering Information thesaurus development project (1993)
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- Abstract
- Reports on the development of a thesaurus by Engineering Information, Inc. for use in indexing its databases. The concept in the former, highly precoordinate, indexing vocabulary were converted into postcoodinate descriptors, and a full set of thesaural relationships developed. Issues to be resolved in developing the vocabulary included the degree of postcoordination that was appropriate, the need to make the thesaurus usable with retrospective indexing that could not be converted and the demands on in-house staff during the development and conversion process
-
Walker, A.: Building an Australian thesaurus : indexing Australian historical photographs (1993)
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- Abstract
- Describes the compilation of a subject thesaurus to provide a controlled vocabulary for indexing the New South Wales Government Printing Office's collection of historical photographs. Discusses the use of interactive videodiscs for preserving, presenting and retrieving pictorial collections and describes the software, online access, and data entry. Considers the development of the subject thesaurus and outlines 3 approaches that might be used by institutions faced with describing and indexing a collection of photographs. Discusses some possible authorities for subject analysis of pictorial materials. Describes the building process focusing on compilation and maintenance, classes excluded, strucutre of the thesaurus and the question of publication
-
Chen, H.; Martinez, J.; Kirchhoff, A.; Ng, T.D.; Schatz, B.R.: Alleviating search uncertainty through concept associations : automatic indexing, co-occurence analysis, and parallel computing (1998)
0.02
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- Abstract
- In this article, we report research on an algorithmic approach to alleviating search uncertainty in a large information space. Grounded on object filtering, automatic indexing, and co-occurence analysis, we performed a large-scale experiment using a parallel supercomputer (SGI Power Challenge) to analyze 400.000+ abstracts in an INSPEC computer engineering collection. Two system-generated thesauri, one based on a combined object filtering and automatic indexing method, and the other based on automatic indexing only, were compaed with the human-generated INSPEC subject thesaurus. Our user evaluation revealed that the system-generated thesauri were better than the INSPEC thesaurus in 'concept recall', but in 'concept precision' the 3 thesauri were comparable. Our analysis also revealed that the terms suggested by the 3 thesauri were complementary and could be used to significantly increase 'variety' in search terms the thereby reduce search uncertainty
-
Byrne, C.C.; McCracken, S.A.: ¬An adaptive thesaurus employing semantic distance, relational inheritance and nominal compound interpretation for linguistic support of information retrieval (1999)
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- Date
- 15. 3.2000 10:22:37
-
Maniez, J.: ¬Des classifications aux thesaurus : du bon usage des facettes (1999)
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- Date
- 1. 8.1996 22:01:00
-
Maniez, J.: ¬Du bon usage des facettes : des classifications aux thésaurus (1999)
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- Date
- 1. 8.1996 22:01:00
-
Chmielewska-Gorczycy, E.: Funkcje tezaurusa w systemie informacy jno-wyszzukiwawczm (1995)
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- Abstract
- Discusses the various functions which a thesaurus can have. Highlights the main function of a thesaurus in vocabulary control, eliminating natural language ambiguity and providing consistency of indexing, and serving as an aid in the searching process. Further discusses the function of a search thesaurus in serving as a user's aid in full text systems and in free indexing systems, and the additional function of an online thesaurus integrated with an online database, that of a vocabulary master file. Notes also how a thesaurus can function as a switching language or intermediary lexicon in multidatabase systems
-
Compatibility and integration of order systems : Research Seminar Proceedings of the TIP/ISKO Meeting, Warsaw, 13-15 September 1995 (1996)
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- Content
- Enthält die Beiträge: SCHMITZ-ESSER, W.: Language of general communication and concept compatibility; RIESTHUIS, G.: Theory of compatibility of information languages; DAHLBERG, I.: The compatibility guidelines - a re-evaluation; SOERGEL, D.: Data structure and software support for integrated thesauri; MURASZKIEWICZ, M., H. RYBINSKI u. W. STRUK: Software problems of merging multilingual thesauri; CHMIELEWSKA-GORCZYCA, E.: Compatibility of indexing tools in multidatabase environment; NEGRINI, G.: Towards structural compatibility between concept systems; SCIBOR, E.: Some remarks on the establishment of concordances between a universal classification system and an interdisciplinary thesaurus; HOPPE, S.: The UMLS - a model for knowledge integration in a subject field; DEXTRE-CLARKE, S.: Integrating thesauri in the agricultural sciences; ROULIN, C.: Bringing multilingual thesauri together: a feasibility study; ZIMMERMANN, H.: Conception and application possibilities of classification concordances in an OPAC environment; SOSINSKA-KALATA, B.: The Universal Decimal Classification as an international standard for knowledge organization in bibliographic databases and library catalogues; WOZNIAK, J. u. T. GLOWACKA: KABA Subject Authority File - an example of an integrated Polish-French-English subject headings system; BABIK, W.: Terminology as a level for the compatibility of indexing languages - some remarks; STANCIKOVA, P.: International integrated database systems linked to multilingual thesauri covering the field of environment and agriculture; SAMEK, T.: Indexing languages integration and the EUROVOC Thesaurus in the Czech Republic; SIWEK, K.: Compatibility discrepancies between Polish and foreign databases; GLINSKI, W. u. M. MURASZKIEWICZ: An intelligent front-end processor for accessing information systems
-
Srinivasan, P.: Thesaurus construction (1992)
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- Abstract
- Thesauri are valuable structures for Information Retrieval systems. A thesaurus provides a precise and controlled vocabulary which serves to coordinate dacument indexing and document retrieval. In both indexing and retrieval, a thesaurus may be used to select the most appropriate terms. Additionally, the thesaurus can assist the searcher in reformulating search strategies if required. Examines the important features of thesauri. This should allow the reader to differentiate between thesauri. Next, a brief overview of the manual thesaurus construction process is given. 2 major approaches for automatic thesaurus construction have been selected for detailed examination. The first is on thesaurus construction from collections of documents,a nd the 2nd, on thesaurus construction by merging existing thesauri. These 2 methods were selected since they rely on statistical techniques alone and are also significantly different from each other. Programs written in C language accompany the discussion of these approaches
-
Hudon, M.: ¬A preliminary investigation of the usefulness of semantic relations and of standardized definitions for the purpose of specifying meaning in a thesaurus (1998)
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- Abstract
- The terminological consistency of indexers working with a thesaurus as indexing aid remains low. This suggests that indexers cannot perceive easily or very clearly the meaning of each descriptor available as index term. This paper presents the background nd some of the findings of a small scale experiment designed to study the effect on interindexer terminological consistency of modifying the nature of the semantic information given with descriptors in a thesaurus. The study also provided some insights into the respective usefulness of standardized definitions and of traditional networks of hierarchical and associative relationships as means of providing essential meaning information in the thesaurus used as indexing aid
-
Riege, U.: Thesaurus und Klassifikation Sozialwissenschaften : Entwicklung der elektronischen Versionen (1998)
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- Source
- Information und Märkte: 50. Deutscher Dokumentartag 1998, Kongreß der Deutschen Gesellschaft für Dokumentation e.V. (DGD), Rheinische Friedrich-Wilhelms-Universität Bonn, 22.-24. September 1998. Hrsg. von Marlies Ockenfeld u. Gerhard J. Mantwill
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Alkämper, H.: ¬Die Neugestaltung des Parlamentsthesaurus PARTHES (1998)
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- Information und Märkte: 50. Deutscher Dokumentartag 1998, Kongreß der Deutschen Gesellschaft für Dokumentation e.V. (DGD), Rheinische Friedrich-Wilhelms-Universität Bonn, 22.-24. September 1998. Hrsg. von Marlies Ockenfeld u. Gerhard J. Mantwill
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Schenkel, M.: Vom Leitkartenthesaurus zum Online-Bibliotheksthesaurus : Die Revision des Dokumentationssystems der Bibliothek des Deutschen Bundestages (1949-1998) (1998)
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- Information und Märkte: 50. Deutscher Dokumentartag 1998, Kongreß der Deutschen Gesellschaft für Dokumentation e.V. (DGD), Rheinische Friedrich-Wilhelms-Universität Bonn, 22.-24. September 1998. Hrsg. von Marlies Ockenfeld u. Gerhard J. Mantwill
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Velasco, M.: Algoritmo de filtrado multitermino para la obtencion de relaciones jerarquicas en la construction automatica de un tesauro de descriptores (1999)
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- Revista Española de Documentaçion Cientifica. 22(1999) no.1, S.34-49
