Search (8 results, page 1 of 1)

0.04125603 = product of:
  0.08251206 = sum of:
    0.08251206 = sum of:
      0.04560902 = weight(_text_:bibliographic in 780) [ClassicSimilarity], result of:
        0.04560902 = score(doc=780,freq=2.0), product of:
          0.17672792 = queryWeight, product of:
            3.893044 = idf(docFreq=2449, maxDocs=44218)
            0.045395818 = queryNorm
          0.2580748 = fieldWeight in 780, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.893044 = idf(docFreq=2449, maxDocs=44218)
            0.046875 = fieldNorm(doc=780)
      0.03690304 = weight(_text_:22 in 780) [ClassicSimilarity], result of:
        0.03690304 = score(doc=780,freq=2.0), product of:
          0.15896842 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.045395818 = queryNorm
          0.23214069 = fieldWeight in 780, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=780)
  0.5 = coord(1/2)

Abstract

Networked orientated standards for vocabulary publishing and exchange and proposals for terminological services and terminology registries will improve sharing and use of all knowledge organization systems in the networked information environment. This means that documentary classifications may also become more applicable for use outside their original domain of application. The paper summarises some characteristics common to documentary classifications and explains some terminological, functional and implementation aspects. The original purpose behind each classification scheme determines the functions that the vocabulary is designed to facilitate. These functions influence the structure, semantics and syntax, scheme coverage and format in which classification data are published and made available. The author suggests that attention should be paid to the differences between documentary classifications as these may determine their suitability for a certain purpose and may impose different requirements with respect to their use online. As we speak, many classifications are being created for knowledge organization and it may be important to promote expertise from the bibliographic domain with respect to building and using classification systems.

Date

22.12.2007 17:22:31

0.04125603 = product of:
  0.08251206 = sum of:
    0.08251206 = sum of:
      0.04560902 = weight(_text_:bibliographic in 1428) [ClassicSimilarity], result of:
        0.04560902 = score(doc=1428,freq=2.0), product of:
          0.17672792 = queryWeight, product of:
            3.893044 = idf(docFreq=2449, maxDocs=44218)
            0.045395818 = queryNorm
          0.2580748 = fieldWeight in 1428, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.893044 = idf(docFreq=2449, maxDocs=44218)
            0.046875 = fieldNorm(doc=1428)
      0.03690304 = weight(_text_:22 in 1428) [ClassicSimilarity], result of:
        0.03690304 = score(doc=1428,freq=2.0), product of:
          0.15896842 = queryWeight, product of:
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.045395818 = queryNorm
          0.23214069 = fieldWeight in 1428, product of:
            1.4142135 = tf(freq=2.0), with freq of:
              2.0 = termFreq=2.0
            3.5018296 = idf(docFreq=3622, maxDocs=44218)
            0.046875 = fieldNorm(doc=1428)
  0.5 = coord(1/2)

Abstract

The paper discusses the challenges of faceted vocabulary organization in universal classifications which treat the universe of knowledge as a coherent whole and in which the concepts and subjects in different disciplines are shared, related and combined. The authors illustrate the challenges of the facet analytical approach using, as an example, the revision of class 72 in UDC. The paper reports on the research undertaken in 2013 as preparation for the revision. This consisted of analysis of concept organization in the UDC schedules in comparison with the Art & Architecture Thesaurus and class W of the Bliss Bibliographic Classification. The paper illustrates how such research can contribute to a better understanding of the field and may lead to improvements in the facet structure of this segment of the UDC vocabulary.

Source

Knowledge organization in the 21st century: between historical patterns and future prospects. Proceedings of the Thirteenth International ISKO Conference 19-22 May 2014, Kraków, Poland. Ed.: Wieslaw Babik

0.02280451 = product of:
  0.04560902 = sum of:
    0.04560902 = product of:
      0.09121804 = sum of:
        0.09121804 = weight(_text_:bibliographic in 3950) [ClassicSimilarity], result of:
          0.09121804 = score(doc=3950,freq=2.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.5161496 = fieldWeight in 3950, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.09375 = fieldNorm(doc=3950)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

International cataloguing and bibliographic control. 31(2002) no.1, S.13-15

0.01900376 = product of:
  0.03800752 = sum of:
    0.03800752 = product of:
      0.07601504 = sum of:
        0.07601504 = weight(_text_:bibliographic in 12) [ClassicSimilarity], result of:
          0.07601504 = score(doc=12,freq=8.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.43012467 = fieldWeight in 12, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.0390625 = fieldNorm(doc=12)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

The vision of the semantic web is gradually unfolding and taking shape through a web of linked data, a part of which is built by capturing semantics stored in existing knowledge organization systems (KOS), subject metadata and resource metadata. The content of vast bibliographic collections is currently categorized by some widely used bibliographic classification and we may soon see them being mined for information and linked in a meaningful way across the web. Bibliographic classifications are designed for knowledge mediation, which offers both a rich terminology and different ways in which concepts can be categorized and related to each other in the universe of knowledge. From 1990 to 2010 they have been used in various resource discovery services on the web, and they continue to be used to support information integration in a number of international digital library projects. In this chapter we will revisit some of the ways in which universal classifications, as language-independent concept schemes, can assist humans and computers in structuring and presenting information and formulating queries. Most importantly, we will highlight issues important to understanding bibliographic classifications, identifying both their unused potential and their technical limitations.

0.0134376865 = product of:
  0.026875373 = sum of:
    0.026875373 = product of:
      0.053750746 = sum of:
        0.053750746 = weight(_text_:bibliographic in 1801) [ClassicSimilarity], result of:
          0.053750746 = score(doc=1801,freq=4.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.30414405 = fieldWeight in 1801, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.0390625 = fieldNorm(doc=1801)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

Subject access to bibliographic data supported by knowledge organization systems, such as subject headings and classification, plays an important role in ensuring the quality of library catalogues. It is generally acknowledged that users have a strong affinity to subject browsing and searching and are inclined tofollow meaningful links between resources. Research studies, however, show that library OPACs are not designed to support or make good use of subject indexes and their underlying semantic structure. A project entitled OPAC semantici was initiated in 2003 by a number of Italian subject specialists and the Italian "Research Group on Subject Indexing" (GRIS) with a goal to analyse and evaluate subject access in Italian library catalogues through a survey of 150 OPACs. Applying the same methodology, a follow-up survey to assess whether any improvement had taken place was conducted five years later, in spring 2008. Analysis of these two surveys indicated that there was a slight improvement. The authors discuss the results of these two surveys, analyse the problems in subject searching in OPACs and explain the recommendations for subject searching enhancement put forward by GRIS. Using the example of Italian OPACs, the authors will attempt to outline some requirements for a subject searching interface and explain how this can be achieved through authority control.

Series

IFLA series on bibliographic control; vol. 42

0.013302632 = product of:
  0.026605263 = sum of:
    0.026605263 = product of:
      0.053210527 = sum of:
        0.053210527 = weight(_text_:bibliographic in 2261) [ClassicSimilarity], result of:
          0.053210527 = score(doc=2261,freq=2.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.30108726 = fieldWeight in 2261, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2261)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Source

International cataloguing and bibliographic control. 37(2008) no.2, S.23-29

0.011402255 = product of:
  0.02280451 = sum of:
    0.02280451 = product of:
      0.04560902 = sum of:
        0.04560902 = weight(_text_:bibliographic in 2651) [ClassicSimilarity], result of:
          0.04560902 = score(doc=2651,freq=2.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.2580748 = fieldWeight in 2651, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.046875 = fieldNorm(doc=2651)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Abstract

The paper analyses the importance of data presentation and modelling and its role in improving the management, use and exchange of analytico-synthetic classifications in automated systems. Inefficiencies, in this respect, hinder the automation of classification systems that offer the possibility of building compound index/search terms. The lack of machine readable data expressing the semantics and structure of a classification vocabulary has negative effects on information management and retrieval, thus restricting the potential of both automated systems and classifications themselves. The authors analysed the data representation structure of three general analytico-synthetic classification systems (BC2-Bliss Bibliographic Classification; BSO-Broad System of Ordering; UDC-Universal Decimal Classification) and put forward some core requirements for classification data representation

0.00475094 = product of:
  0.00950188 = sum of:
    0.00950188 = product of:
      0.01900376 = sum of:
        0.01900376 = weight(_text_:bibliographic in 3370) [ClassicSimilarity], result of:
          0.01900376 = score(doc=3370,freq=2.0), product of:
            0.17672792 = queryWeight, product of:
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.045395818 = queryNorm
            0.10753117 = fieldWeight in 3370, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.893044 = idf(docFreq=2449, maxDocs=44218)
              0.01953125 = fieldNorm(doc=3370)
      0.5 = coord(1/2)
  0.5 = coord(1/2)

Content

"Last week, I received an email from Yulia Skora in Ukraine who is working on the mapping between UDC Summary and BBK (Bibliographic Library Classification) Summary. It reminded me of yet another challenging area of work. When responding to Yulia I realised that the issues with mapping, for instance, UDC Summary to Dewey Summaries [pdf] are often made more difficult because we have to deal with classification summaries in both systems and we cannot use a known exactMatch in many situations. In 2008, following advice received from colleagues in the HILT project, two of our colleagues quickly mapped 1000 classes of Dewey Summaries to UDC Master Reference File as a whole. This appeared to be relatively simple. The mapping in this case is simply an answer to a question "and how would you say e.g. Art metal work in UDC?" But when in 2009 we realised that we were going to release 2000 classes of UDC Summary as linked data, we decided to wait until we had our UDC Summary set defined and completed to be able to publish it mapped to the Dewey Summaries. As we arrived at this stage, little did we realise how much more complex the reversed mapping of UDC Summary to Dewey Summaries would turn out to be. Mapping the Dewey Summaries to UDC highlighted situations in which the logic and structure of two systems do not agree. Especially because Dewey tends to enumerate combinations of subject and attributes that do not always logically belong together. For instance, 850 Literatures of Italian, Sardinian, Dalmatian, Romanian, Rhaeto-Romanic languages Italian literature. This class mixes languages from three different subgroups of Romance languages. Italian and Sardinian belong to Italo Romance sub-family; Romanian and Dalmatian are Balkan Romance languages and Rhaeto Romance is the third subgroup that includes Friulian Ladin and Romanch. As UDC literature is based on a strict classification of language families, Dewey class 850 has to be mapped to 3 narrower UDC classes 821.131 Literature of Italo-Romance Languages , 821.132 Literature of Rhaeto-Romance languages and 821.135 Literature of Balkan-Romance Languages, or to a broader class 821.13 Literature of Romance languages. Hence we have to be sure that we have all these classes listed in the UDC Summary to be able to express UDC-DDC many-to-one, specific-to-broader relationships.