-
Zeng, M.L.; Chen, Y.: Features of an integrated thesaurus management and search system for the networked environment (2003)
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- Source
- Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine
-
Kuhr, P.S.: Putting the world back together : mapping multiple vocabularies into a single thesaurus (2003)
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- Source
- Subject retrieval in a networked environment: Proceedings of the IFLA Satellite Meeting held in Dublin, OH, 14-16 August 2001 and sponsored by the IFLA Classification and Indexing Section, the IFLA Information Technology Section and OCLC. Ed.: I.C. McIlwaine
-
Eastman, C.M.: Overlaps in postings to thesaurus terms : a preliminary study (1988)
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- Abstract
- The patterns of overlap between terms which are closely related in a thesaurus are considered. The relationships considered are parent/child, in which one term is a broader term of the other, and sibling in which to 2 terms share the same broader term. The patterns of overlap observed in the MeSH thesaurus with respect to selected MEDLINE postings are examined. The implications of the overlap patterns are discussed, in particular, the impact of the overlap patterns on the potential effectiveness of a proposed algorithm for handling negation is considered.
- Date
- 25.12.1995 22:52:34
- Imprint
- Medford, New Jersey : Learned Information Inc.
- Source
- ASIS'88. Information technology: planning for the next fifty years. Proceedings of the 51st Annual Meeting of the Americal Society for Information Science, Atlanta, Georgia, 23.-27.10.1988. Vol.25. Ed. by C.L. Borgman and E.Y.H. Pai
-
Dupuis, P.; Lapointe, J.: Developpement d'un outil documentaire à Hydro-Quebec : le Thesaurus HQ (1997)
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- Abstract
- Describes the backgroud to the construction of a thesaurus at Hydro-Quebec, Quebec, Canada. Several information units, linked to form a network, share the same bibliographic database. The need for coherence and efficiency was the principle motive for the construction of the multidisciplinary thesaurus. Describes the construction process, discusses the specifity of the tool, its circulation, and considers its use on a partnership basis with other information services
- Footnote
- Übers. des Titels: The development of an information tool at Hydro-Quebec: the HQ Thesaurus
- Source
- Argus. 26(1997) no.3, S.16-22
-
Crouch, C.J.: ¬An approach to the automatic construction of global thesauri (1990)
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- Abstract
- The benefits of a well constructed thesaurus to an information retrieval system have long been recognised by both researchers and practitioners in the field. Examines both early and current approaches to automatic thesaurus construction and describes an approach to the automatic generation of global thesauri based on the term discrimination value model of Salton Yang, and Yu and on an appropriate clustering algorithm. This method has been implemented and applied to 2 document collections. Preliminary results indicate that this method, which produces improvements in retrieval performance in excess of 10 and 15% in the test collections, is viable and worthy of continued investigation.
- Date
- 22. 4.1996 3:39:53
- Source
- Information processing and management. 26(1990), no.5, S.629-640
-
Busch, J.A.: Building and accessing vocabulary resources for networked resource discovery and navigation (1998)
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- Abstract
- The Getty has a lenghty history in the research and development of thesauri and other structured vocabulary tools to make the use and exchange of electronic information easier
- 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
-
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
-
Engerer, V.: Control and syntagmatization : vocabulary requirements in information retrieval thesauri and natural language lexicons (2017)
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- Abstract
- This paper explores the relationships between natural language lexicons in lexical semantics and thesauri in information retrieval research. These different areas of knowledge have different restrictions on use of vocabulary; thesauri are used only in information search and retrieval contexts, whereas lexicons are mental systems and generally applicable in all domains of life. A set of vocabulary requirements that defines the more concrete characteristics of vocabulary items in the 2 contexts can be derived from this framework: lexicon items have to be learnable, complex, transparent, etc., whereas thesaurus terms must be effective, current and relevant, searchable, etc. The differences in vocabulary properties correlate with 2 other factors, the well-known dimension of Control (deliberate, social activities of building and maintaining vocabularies), and Syntagmatization, which is less known and describes vocabulary items' varying formal preparedness to exit the thesaurus/lexicon, enter into linear syntactic constructions, and, finally, acquire communicative functionality. It is proposed that there is an inverse relationship between Control and Syntagmatization.
- Source
- Journal of the Association for Information Science and Technology. 68(2017) no.6, S.1480-1490
-
Schmitz-Esser, W.: Thesaurus and beyond : an advanced formula for linguistic engineering and information retrieval (1999)
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- Abstract
- This paper describes a proposal for a new approach to thesaurus design and construction that could have significant implicantions for change in the way multilingual thesauri are handled and integrated with each other. The formula presented here has its origin in the work of the German Thesaurus Committee and has had input from a number of scientists and practitioners int he field. The emphasis is on the various types of relationships found among concepts, notiions and universals in languages. These relationships are analysed and refined beyond the approach taken in existing thesauri. This proposal is very much at the discussion stage and the author invites the assistance of interested readers through criticisms, discussion and dialogue. Applications of the proposed thesaurus are included and the major goal of this proposal is to provide the basis for improved desing and integration of multilingual thesauri
- Source
- Knowledge organization. 26(1999) no.1, S.10-22
-
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
- Source
- Journal of information science. 25(1999) no.2, S.113-131
-
Losee, R.: Thesaurus structure, descriptive parameters, and scale (2016)
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- Abstract
- A thesaurus contains a set of terms or features that may be used to represent recorded information, including prose documents or scientific data sets. The focus of this work is on the basic structural nature of a thesaurus itself, not on how people develop a thesaurus or how a thesaurus effects retrieval performance. Thesauri in this research are automatically developed in a simulation from sets of randomly or exhaustively generated documents. Each thesaurus is generated by the Thesaurus Generator software from a set of several hundred documents, and thousands of different document sets are used as input to the Thesaurus Generator, producing thousands of thesauri. Thus, thousands of thesauri are generated for each data point in accompanying graphs. The characteristics of this large number of thesauri are studied so that the relationships between thesaurus parameters can be determined. Some rules governing these relationships are suggested, addressing factors such as tree height and width, number of tree roots in thesauri, and number of terms available for the vocabulary. How these parameters scale as vocabularies grow is addressed. These results apply to various information systems that contain features with hierarchical relationships, including many thesauri and ontologies.
- Source
- Journal of the Association for Information Science and Technology. 67(2016) no.9, S.2156-2165
-
Hjoerland, B.: Are relations in thesauri "context-free, definitional, and true in all possible worlds"? (2015)
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- Abstract
- Much of the literature of information science and knowledge organization has accepted and built upon Elaine Svenonius's (2004) claim that "paradigmatic relationships are those that are context-free, definitional, and true in all possible worlds" (p. 583). At the same time, the literature demonstrates a common understanding that paradigmatic relations are the kinds of semantic relations used in thesauri and other knowledge organization systems (including equivalence relations, hierarchical relations, and associative relations). This understanding is problematic and harmful because it directs attention away from the empirical and contextual basis for knowledge-organizing systems. Whether A is a kind of X is certainly not context-free and definitional in empirical sciences or in much everyday information. Semantic relations are theory-dependent and, in biology, for example, a scientific revolution has taken place in which many relations have changed following the new taxonomic paradigm named "cladism." This biological example is not an exception, but the norm. Semantic relations including paradigmatic relations are not a priori but are dependent on subject knowledge, scientific findings, and paradigms. As long as information scientists and knowledge organizers isolate themselves from subject knowledge, knowledge organization cannot possibly progress.
- Source
- Journal of the Association for Information Science and Technology. 66(2015) no.7, S.1367-1373
-
Shiri, A.A.; Revie, C.: Thesauri on the Web : current developments and trends (2000)
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- Abstract
- This article provides an overview of recent developments relating to the application of thesauri in information organisation and retrieval on the World Wide Web. It describes some recent thesaurus projects undertaken to facilitate resource description and discovery and access to wide-ranging information resources on the Internet. Types of thesauri available on the Web, thesauri integrated in databases and information retrieval systems, and multiple-thesaurus systems for cross-database searching are also discussed. Collective efforts and events in addressing the standardisation and novel applications of thesauri are briefly reviewed.
- Source
- Online information review. 24(2000) no.4, S.273-279
-
Qin, J.; Paling, S.: Converting a controlled vocabulary into an ontology : the case of GEM (2001)
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- Date
- 24. 8.2005 19:20:22
- Source
- Information Research. 6(2001), no.2
-
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
-
Giménez-Chornet, V.; Escrig-Giménez, M.: Designing a thesaurus to give visibility to the historical archives in the Archivo del Reino in Valencia (2011)
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- Abstract
- This article describes the process of constructing a thesaurus based on original historical documents located in the Archivo del Reino de Valencia, one of the most important historical archives in Spain. After examining precedents, we discuss the methodology used and its application. The aim of the project was to provide visibility to information contained in these historical documents which would otherwise have remained inaccessible and to do so in the clearest, most rigorous, and most useful way possible for both the specialized user and the general public. The use of information technology as a management tool is not as common in archives, especially historical archives, as in other documentation areas such as libraries. A pilot project was therefore set up to create an intranet support for managing four specific historical archives containing documents dating from the 13th to the 20th centuries. The most important part of this project was that of exploring the viability of constructing a thesaurus to become part of the automated program for archive description and checking.
-
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
- Source
- Information services and use. 13(1993) no.1, S.71-80
-
Mooers, C.N.: ¬The indexing language of an information retrieval system (1985)
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- Abstract
- Calvin Mooers' work toward the resolution of the problem of ambiguity in indexing went unrecognized for years. At the time he introduced the "descriptor" - a term with a very distinct meaning-indexers were, for the most part, taking index terms directly from the document, without either rationalizing them with context or normalizing them with some kind of classification. It is ironic that Mooers' term came to be attached to the popular but unsophisticated indexing methods which he was trying to root out. Simply expressed, what Mooers did was to take the dictionary definitions of terms and redefine them so clearly that they could not be used in any context except that provided by the new definition. He did, at great pains, construct such meanings for over four hundred words; disambiguation and specificity were sought after and found for these words. He proposed that all indexers adopt this method so that when the index supplied a term, it also supplied the exact meaning for that term as used in the indexed document. The same term used differently in another document would be defined differently and possibly renamed to avoid ambiguity. The disambiguation was achieved by using unabridged dictionaries and other sources of defining terminology. In practice, this tends to produce circularity in definition, that is, word A refers to word B which refers to word C which refers to word A. It was necessary, therefore, to break this chain by creating a new, definitive meaning for each word. Eventually, means such as those used by Austin (q.v.) for PRECIS achieved the same purpose, but by much more complex means than just creating a unique definition of each term. Mooers, however, was probably the first to realize how confusing undefined terminology could be. Early automatic indexers dealt with distinct disciplines and, as long as they did not stray beyond disciplinary boundaries, a quick and dirty keyword approach was satisfactory. The trouble came when attempts were made to make a combined index for two or more distinct disciplines. A number of processes have since been developed, mostly involving tagging of some kind or use of strings. Mooers' solution has rarely been considered seriously and probably would be extremely difficult to apply now because of so much interdisciplinarity. But for a specific, weIl defined field, it is still weIl worth considering. Mooers received training in mathematics and physics from the University of Minnesota and the Massachusetts Institute of Technology. He was the founder of Zator Company, which developed and marketed a coded card information retrieval system, and of Rockford Research, Inc., which engages in research in information science. He is the inventor of the TRAC computer language.
- Footnote
- Original in: Information retrieval today: papers presented at an Institute conducted by the Library School and the Center for Continuation Study, University of Minnesota, Sept. 19-22, 1962. Ed. by Wesley Simonton. Minneapolis, Minn.: The Center, 1963. S.21-36.
-
Smith, D.A.: Use of a thesaurus in two-stage information retrieval of electronic records (1996)
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- Source
- Proceedings of the DLM-Forum on Electronic Records, Brussels, 18-20 December 1996
-
Roux, P.J.A.; Rykheer, J.H.: Developing a South African master thesaurus for community information (1990)
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- Abstract
- In 1987 the Department of Library and Information Science at the University of South Africa committed itself to a research programme on community information. As part of that programme, the Department's Centre for Library and Information Service is compiling a prototype resource file of community information for a well-defined community in the Pretoria municipality. To retrieve information from the file, the Centre adopted an alphabetical approach, which necessitated a thesaurus. Instead of developing a thesaurus for the specific needs of the particular community, a "master" thesaurus, applicable to South African communities can be generated. The development of this South African "master" thesaurus for community information is described and the results reviewed.
- Source
- South African journal of library and information science. 58(1990) no.2, S.174-179
