Search (65 results, page 1 of 4)

0.020246917 = product of:
  0.06074075 = sum of:
    0.044185378 = weight(_text_:searching in 1149) [ClassicSimilarity], result of:
      0.044185378 = score(doc=1149,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 1149, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=1149)
    0.016555373 = product of:
      0.033110745 = sum of:
        0.033110745 = weight(_text_:22 in 1149) [ClassicSimilarity], result of:
          0.033110745 = score(doc=1149,freq=2.0), product of:
            0.1222562 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.03491209 = queryNorm
            0.2708308 = fieldWeight in 1149, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.0546875 = fieldNorm(doc=1149)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)

Abstract

A thesaurus in the controlled vocabulary environment is a tool designed to support effective infonnation retrieval (IR) by guiding indexers and searchers consistently to choose the same terms for expressing a given concept or combination of concepts. Terms in the thesaurus are linked by relationships of three well-known types: equivalence, hierarchical, and associative. The functions and properties of these three basic types and some subcategories are described, as well as some additional relationship types conunonly found in thesauri. Progressive automation of IR processes and the capability for simultaneous searching of vast networked resources are creating some pressures for change in the categorization and consistency of relationships.

Date

22. 9.2007 15:45:57

0.01995085 = product of:
  0.059852548 = sum of:
    0.031560984 = weight(_text_:searching in 2927) [ClassicSimilarity], result of:
      0.031560984 = score(doc=2927,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.22347288 = fieldWeight in 2927, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2927)
    0.028291566 = product of:
      0.056583133 = sum of:
        0.056583133 = weight(_text_:etc in 2927) [ClassicSimilarity], result of:
          0.056583133 = score(doc=2927,freq=2.0), product of:
            0.18910104 = queryWeight, product of:
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.03491209 = queryNorm
            0.2992217 = fieldWeight in 2927, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.0390625 = fieldNorm(doc=2927)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)

Abstract

Presents a state of the art review of the literature of expert systems in library and information science, involving exhaustive searches of all major LIS CD-ROM databases (LISA, ERIC, LiLi, INSPEC etc.) and bibliographies appended in review articles. The search retrieved 679 references, comprising 362 periodical articles, 180 conference proceedings, 63 books articles, 28 theses and 46 monographs. The growth of the literature peaked between 1989 and 1990 and subsequently declined after 1992. Over 1/3 (287) covered intelligent front ends and interfaces for online searching and retrieval, followed by applications in reference service (113), classification, indexing and abstracting (86) and cataloguing (7). The most productive periodicals comprised 6 titles, of which 'Information processing and management' topped the lsit: 43 authors were found to contribute between 5 and 35 articles each, hence contributing 32,19% of the total contributors. 382 of the publications were single author works, 172 were by 2 authors, 72 were by 3 authors and 49 were by 4 or more authors. Only 161 titles were expressive enough to reveal both the name and function of systems being developed

0.01727853 = product of:
  0.10367118 = sum of:
    0.10367118 = sum of:
      0.080020644 = weight(_text_:etc in 1670) [ClassicSimilarity], result of:
        0.080020644 = score(doc=1670,freq=4.0), product of:
          0.18910104 = queryWeight, product of:
            5.4164915 = idf(docFreq=533, maxDocs=44218)
            0.03491209 = queryNorm
          0.4231634 = fieldWeight in 1670, product of:
            2.0 = tf(freq=4.0), with freq of:
              4.0 = termFreq=4.0
            5.4164915 = idf(docFreq=533, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1670)
      0.023650533 = weight(_text_:22 in 1670) [ClassicSimilarity], result of:
        0.023650533 = score(doc=1670,freq=2.0), product of:
          0.1222562 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.03491209 = queryNorm
          0.19345059 = fieldWeight in 1670, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.0390625 = fieldNorm(doc=1670)
  0.16666667 = coord(1/6)

Abstract

Es ist ein semantisches Netz für den Gegenstandsbereich Luftfahrt modelliert worden, welches Unternehmensinformationen, Organisationen, Fluglinien, Flughäfen, etc. enthält, Diese sind 10 Hauptkategorien zugeordnet worden, die untergliedert nach Facetten sind. Die Begriffe des Gegenstandsbereiches sind mit 23 unterschiedlichen Relationen verknüpft worden (Z. B.: 'hat Standort in', bietet an, 'ist Homebase von', etc). Der Schwerpunkt der Betrachtung liegt auf dem Unterschied zwischen den drei klassischen Standardrelationen und den zusätzlich eingerichteten Relationen, bezüglich ihrem Nutzen für ein effizientes Retrieval. Die angelegten Kategorien und Relationen sind sowohl für eine kognitive als auch für eine maschinelle Verarbeitung geeignet.

Date

26. 9.2006 21:00:22

0.014577395 = product of:
  0.08746437 = sum of:
    0.08746437 = weight(_text_:searching in 5169) [ClassicSimilarity], result of:
      0.08746437 = score(doc=5169,freq=6.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.61930627 = fieldWeight in 5169, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0625 = fieldNorm(doc=5169)
  0.16666667 = coord(1/6)

Abstract

Open system protocols for search and retrieval have not provided explicit ways in which to implement thesaurus-aided searching. A number of different approaches within the existing protocols, as well as a proposed service, are evaluated. A general approach to implementing thesaurus-aided searching, particularly during consultation of a thesaurus, requires an entirely new service, whose main features are described

0.011970511 = product of:
  0.03591153 = sum of:
    0.01893659 = weight(_text_:searching in 1169) [ClassicSimilarity], result of:
      0.01893659 = score(doc=1169,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.13408373 = fieldWeight in 1169, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0234375 = fieldNorm(doc=1169)
    0.01697494 = product of:
      0.03394988 = sum of:
        0.03394988 = weight(_text_:etc in 1169) [ClassicSimilarity], result of:
          0.03394988 = score(doc=1169,freq=2.0), product of:
            0.18910104 = queryWeight, product of:
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.03491209 = queryNorm
            0.17953302 = fieldWeight in 1169, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.0234375 = fieldNorm(doc=1169)
      0.5 = coord(1/2)
  0.33333334 = coord(2/6)

Abstract

T.1: Today's thesauri are mostly electronic tools, having moved on from the paper-based era when thesaurus standards were first developed. They are built and maintained with the support of software and need to integrate with other software, such as search engines and content management systems. Whereas in the past thesauri were designed for information professionals trained in indexing and searching, today there is a demand for vocabularies that untrained users will find to be intuitive. ISO 25964 makes the transition needed for the world of electronic information management. However, part 1 retains the assumption that human intellect is usually involved in the selection of indexing terms and in the selection of search terms. If both the indexer and the searcher are guided to choose the same term for the same concept, then relevant documents will be retrieved. This is the main principle underlying thesaurus design, even though a thesaurus built for human users may also be applied in situations where computers make the choices. Efficient exchange of data is a vital component of thesaurus management and exploitation. Hence the inclusion in this standard of recommendations for exchange formats and protocols. Adoption of these will facilitate interoperability between thesaurus management systems and the other computer applications, such as indexing and retrieval systems, that will utilize the data. Thesauri are typically used in post-coordinate retrieval systems, but may also be applied to hierarchical directories, pre-coordinate indexes and classification systems. Increasingly, thesaurus applications need to mesh with others, such as automatic categorization schemes, free-text search systems, etc. Part 2 of ISO 25964 describes additional types of structured vocabulary and gives recommendations to enable interoperation of the vocabularies at all stages of the information storage and retrieval process.

0.009110872 = product of:
  0.05466523 = sum of:
    0.05466523 = weight(_text_:searching in 7410) [ClassicSimilarity], result of:
      0.05466523 = score(doc=7410,freq=6.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.38706642 = fieldWeight in 7410, product of:
          2.4494898 = tf(freq=6.0), with freq of:
            6.0 = termFreq=6.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0390625 = fieldNorm(doc=7410)
  0.16666667 = coord(1/6)

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

0.008926794 = product of:
  0.053560764 = sum of:
    0.053560764 = weight(_text_:searching in 145) [ClassicSimilarity], result of:
      0.053560764 = score(doc=145,freq=4.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.37924606 = fieldWeight in 145, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.046875 = fieldNorm(doc=145)
  0.16666667 = coord(1/6)

Abstract

For more than thirty years thesauri have been valuable tools in information retrieval. Originally, the basic function of the thesauri was to help the indexer to transform concepts and their relationships, as expressed in the language of documents, into the more regularised indexing language of catalogues and databases. In the nineties another important purpose of the thesauri is to guide the searcher to the best search terms. In spite of the new role, the design of the thesauri has remained more or less stable. This paper explores the demands which are put on the thesauri in relation to searching. Findings are presented in the form of generalisations and moreover illustrated in relation to a real-life situation. Suggestions for improved functionality are presented in the form of a prototype of a thesaurus record. The new role as a conceptual searching tool is also influencing the construction process. Therefore, the paper ends up with a discussion of new methods for thesaurus construction

0.008926794 = product of:
  0.053560764 = sum of:
    0.053560764 = weight(_text_:searching in 5008) [ClassicSimilarity], result of:
      0.053560764 = score(doc=5008,freq=4.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.37924606 = fieldWeight in 5008, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.046875 = fieldNorm(doc=5008)
  0.16666667 = coord(1/6)

Abstract

While information retrieval thesauri may improve search results, there is little research documenting whether general information system users employ these vocabulary tools. This article explores user comprehension and searching with thesauri. Data was gathered as part of a larger empirical query-expansion study involving the ProQuest Controlled Vocabulary. The results suggest that users' knowledge of thesauri is extremely limited. After receiving a basic thesaurus introduction, however, users indicate a desire to employ these tools. The most significant result was that users expressed a preference for thesauri employment through interactive processing or a combination of automatic and interactive processing, compared to exclusively automatic processing. This article defines information retrieval thesauri, summarizes research results, considers circumstances underlying users' knowledge and searching with thesauri, and highlights future research needs.

0.008416262 = product of:
  0.050497573 = sum of:
    0.050497573 = weight(_text_:searching in 4892) [ClassicSimilarity], result of:
      0.050497573 = score(doc=4892,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.3575566 = fieldWeight in 4892, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0625 = fieldNorm(doc=4892)
  0.16666667 = coord(1/6)

0.008416262 = product of:
  0.050497573 = sum of:
    0.050497573 = weight(_text_:searching in 1855) [ClassicSimilarity], result of:
      0.050497573 = score(doc=1855,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.3575566 = fieldWeight in 1855, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0625 = fieldNorm(doc=1855)
  0.16666667 = coord(1/6)

Abstract

The basic elements of faceted thesauri are described, together with a review of their origins and some prominent examples. Their use in browsing and searching applications is discussed. Faceted thesauri are distinguished from faceted classification schemes, while acknowledging the close similarities. The paper concludes by comparing faceted thesauri and related knowledge organization systems to ontologies and discussing appropriate areas of use.

0.008002063 = product of:
  0.04801238 = sum of:
    0.04801238 = product of:
      0.09602476 = sum of:
        0.09602476 = weight(_text_:etc in 3678) [ClassicSimilarity], result of:
          0.09602476 = score(doc=3678,freq=4.0), product of:
            0.18910104 = queryWeight, product of:
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.03491209 = queryNorm
            0.50779605 = fieldWeight in 3678, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              5.4164915 = idf(docFreq=533, maxDocs=44218)
              0.046875 = fieldNorm(doc=3678)
      0.5 = coord(1/2)
  0.16666667 = coord(1/6)

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.

0.007438996 = product of:
  0.044633973 = sum of:
    0.044633973 = weight(_text_:searching in 2703) [ClassicSimilarity], result of:
      0.044633973 = score(doc=2703,freq=4.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.3160384 = fieldWeight in 2703, product of:
          2.0 = tf(freq=4.0), with freq of:
            4.0 = termFreq=4.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0390625 = fieldNorm(doc=2703)
  0.16666667 = coord(1/6)

Abstract

When consumers search for health information, a major obstacle is their unfamiliarity with the medical terminology. Even though medical thesauri such as the Medical Subject Headings (MeSH) and related tools (e.g., the MeSH Browser) were created to help consumers find medical term definitions, the lack of direct and explicit integration of these help tools into a health retrieval system prevented them from effectively achieving their objectives. To explore this issue, we conducted an empirical study with two systems: One is a simple interface system supporting query-based searching; the other is an augmented system with two new components supporting MeSH term searching and MeSH tree browsing. A total of 45 subjects were recruited to participate in the study. The results indicated that the augmented system is more effective than the simple system in terms of improving user-perceived topic familiarity and question-answer performance, even though we did not find users spend more time on the augmented system. The two new MeSH help components played a critical role in participants' health information retrieval and were found to allow them to develop new search strategies. The findings of the study enhanced our understanding of consumers' search behaviors and shed light on the design of future health information retrieval systems.

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 5096) [ClassicSimilarity], result of:
      0.044185378 = score(doc=5096,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 5096, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5096)
  0.16666667 = coord(1/6)

Abstract

Part of a special issue on hypertext and information retrieval. Conventional information retrieval systems provide little support for browsing. Browsing is the major method of searching in hypertext system but users can become disoriented even when browsing small information space. If hypertext is to be used to support browsing in bibliographic databases navigational assistance will be required. Examines the role of thesauri as navigational aids for subject domains of Bibliographic databases. Presents the design of an experimental hypertext-based browsing inference for a thesaurus and its implementation using a commercially available hypertext program. Examines strategies for linking the thesaurus to a database

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 3556) [ClassicSimilarity], result of:
      0.044185378 = score(doc=3556,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 3556, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3556)
  0.16666667 = coord(1/6)

Abstract

Although thesauri can be solve some problems posed by computerised data base searching (synonyms, generic representation) their compilation requires extensive time and effort of experts and their maintenance is also difficult. Describes how a thesaurus was compiled and maintained automatically by taking advantage of the specially designed formats to input expertise with ease. The thesaurus was named a dynamic thesaurus because it depends on the set of stored data and is adapted to the necessary and sufficient range of keywords. A data base of polymers is taken as an example.

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 5194) [ClassicSimilarity], result of:
      0.044185378 = score(doc=5194,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 5194, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5194)
  0.16666667 = coord(1/6)

Abstract

The derivation of a thesaurus from a new schedule for UDC class 61 Medical Sciences which has been restructured into a faceted classification system using the framework provided by the Bliss Bibliographic Classification. The resulting thesaurus is intended to serve as a tool for indexing and searching but will also be the index to the 61 class itself. The background for the research is briefly described. The sources and methods used to select the descriptors and define their relationships are discussed. Problems are identified and some solutions proposed

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 138) [ClassicSimilarity], result of:
      0.044185378 = score(doc=138,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 138, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=138)
  0.16666667 = coord(1/6)

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

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 3227) [ClassicSimilarity], result of:
      0.044185378 = score(doc=3227,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 3227, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=3227)
  0.16666667 = coord(1/6)

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

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 4431) [ClassicSimilarity], result of:
      0.044185378 = score(doc=4431,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 4431, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=4431)
  0.16666667 = coord(1/6)

Abstract

This paper describes the Laurin thesaurus, which is used for indexing and searching in the Laurin system, a software package for digital clipping archives. As a multilingual thesaurus it complies with the corresponding standards, though presenting some approaches going beyond some of the standards' recommendations. The Laurin thesaurus integrates all kind of indexing terms, not only keywords, but proper names as well. The system of categories and relationships is described in detail.

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 5664) [ClassicSimilarity], result of:
      0.044185378 = score(doc=5664,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 5664, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=5664)
  0.16666667 = coord(1/6)

Abstract

Until the 1980s, concepts like authority control, controlled vocabularies, and metadata and schemas were all but unknown in the world of art and material culture information. This paper traces the evolution and current status of tools and resources for authority control of art information, and gives examples of how the lack of authority control can impede end-user access. Collection-specific thesauri and subject indexes, and vocabulary-assisted searching and query expansion are also discussed.

0.0073642298 = product of:
  0.044185378 = sum of:
    0.044185378 = weight(_text_:searching in 2558) [ClassicSimilarity], result of:
      0.044185378 = score(doc=2558,freq=2.0), product of:
        0.14122958 = queryWeight, product of:
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.03491209 = queryNorm
        0.31286204 = fieldWeight in 2558, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          4.0452914 = idf(docFreq=2103, maxDocs=44218)
          0.0546875 = fieldNorm(doc=2558)
  0.16666667 = coord(1/6)

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.