Search (6 results, page 1 of 1)

0.032173738 = product of:
  0.09652121 = sum of:
    0.09652121 = product of:
      0.19304243 = sum of:
        0.19304243 = weight(_text_:indexing in 664) [ClassicSimilarity], result of:
          0.19304243 = score(doc=664,freq=8.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            1.0150168 = fieldWeight in 664, product of:
              2.828427 = tf(freq=8.0), with freq of:
                8.0 = termFreq=8.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.09375 = fieldNorm(doc=664)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

LCSH

PRECIS (Indexing system)

PRECIS

Documents / Subject indexing / Schemes: PRECIS

Subject

PRECIS (Indexing system)
Documents / Subject indexing / Schemes: PRECIS

0.018768014 = product of:
  0.05630404 = sum of:
    0.05630404 = product of:
      0.11260808 = sum of:
        0.11260808 = weight(_text_:indexing in 152) [ClassicSimilarity], result of:
          0.11260808 = score(doc=152,freq=2.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            0.5920931 = fieldWeight in 152, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.109375 = fieldNorm(doc=152)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

0.018575516 = product of:
  0.055726547 = sum of:
    0.055726547 = product of:
      0.11145309 = sum of:
        0.11145309 = weight(_text_:indexing in 6961) [ClassicSimilarity], result of:
          0.11145309 = score(doc=6961,freq=6.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            0.5860202 = fieldWeight in 6961, product of:
              2.4494898 = tf(freq=6.0), with freq of:
                6.0 = termFreq=6.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.0625 = fieldNorm(doc=6961)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

LCSH

PRECIS (Indexing system)

Subject

PRECIS (Indexing system)

0.013270989 = product of:
  0.039812967 = sum of:
    0.039812967 = product of:
      0.079625934 = sum of:
        0.079625934 = weight(_text_:indexing in 2849) [ClassicSimilarity], result of:
          0.079625934 = score(doc=2849,freq=4.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            0.41867304 = fieldWeight in 2849, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.0546875 = fieldNorm(doc=2849)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

The first opportunity to assess a largescale application of the PRECIS indexing system in North America came with its adoption by the National Film Board of Canada as the method of subject access to a national information system for Canadian audiovisual materials. The authors provide an overview of PRECIS use by this automated bibliographic service - the reasons for its choice, the challenge involved in the subject analysis and indexing of audiovisual documents, the methodology and software used to process PRECIS records, the resulting catalogue subject indexes and user reaction

0.013270989 = product of:
  0.039812967 = sum of:
    0.039812967 = product of:
      0.079625934 = sum of:
        0.079625934 = weight(_text_:indexing in 4064) [ClassicSimilarity], result of:
          0.079625934 = score(doc=4064,freq=4.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            0.41867304 = fieldWeight in 4064, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.0546875 = fieldNorm(doc=4064)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

Report on research carried out in Brazil for a doctoral thesis, investigating the possibility of using the PRECIS indexing system for documents in Portuguese. Discusses the theoretical basis of PRECIS, and presents the resultss of a study in comparing the use PRECIS to index 2 samples of documents, in English and Portuguese respectively. Concludes that, with minor modifications to take account of the differences in structure between the 2 languages. PRECIS could produce satisfactory results for documents in Portuguese. This suggests the further possibility that PRECIS - because of its sound logical basis rather than its complex linguistic theory - could become a multilingual indexing system.

0.009851154 = product of:
  0.029553462 = sum of:
    0.029553462 = product of:
      0.059106924 = sum of:
        0.059106924 = weight(_text_:indexing in 3652) [ClassicSimilarity], result of:
          0.059106924 = score(doc=3652,freq=12.0), product of:
            0.19018644 = queryWeight, product of:
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.049684696 = queryNorm
            0.3107841 = fieldWeight in 3652, product of:
              3.4641016 = tf(freq=12.0), with freq of:
                12.0 = termFreq=12.0
              3.8278677 = idf(docFreq=2614, maxDocs=44218)
              0.0234375 = fieldNorm(doc=3652)
      0.5 = coord(1/2)
  0.33333334 = coord(1/3)

Abstract

Probably the most interesting, original and controversial indexing system of the 1970s has been PRECIS (the Preserved Context Index System) developed by Derek Austin. It attracted such attention that the short courses given at the British National Bibliography offices in London -initiated as a means of teaching the staff of BNB who did subject indexing-were repeated all over the world, in the form of three-day or three-week sessions. A few fortunate non-BNB indexers were taken into London classes, taught by Austin and Digger, and had the advantage of a week's work with the regular staff theresomething that could not be done elsewhere. In addition, descriptions of the system were published from time to time as progress was made an the system itself and clarification or updating were needed. This article has been selected as an example of clarification. A second edition of the original 1974 Manual describing PRECIS appeared in early 1984, so the system may now be regarded as fully mature. PRECIS, which is the culmination of Austin's research for the Classification Research Group plus considerable additional input from the science of linguistics, is a highly sophisticated indexing system, deliberately created to be used with a computer. The motive behind it was that the indexer should do the brain work and the computer the nitty-gritty work of manipulating index terms. Chosen combinations and permutations are used as head words under strict rules to ensure that the context which defines the specific meaning of these words is always present, thus avoiding the ambiguity problem in indexing. The system also has classifi ation features, in part drawn from the Group's long interest in faceted classification. The actual index produces a large number of index entries, each carrying with it the basic context of the item being described. A weIl-defined terminology, in addition to contextdependency, is a feature of PRECIS. Role operators define the types of terms used and control the manipulations of the terms, which are originally entered as a string. The indexer is able to analyze and reduce to string form any document, process, or material that can be described in words, making it ideal for most audiovisual material.
The system itself has two major aspects: - a syntactic approach in which relationships between terms are identified and tagged. Suitable algorithms for manipulation produce a very thorough index in which each head word is kept in context. - a semantic approach in which terminology is weIl defined by ensuring that the relationships of equivalence, hierarchy, and association are clearly established. Charts of relationships are created by inductive means (i.e., from the ground up). A special code for computer manipulation is used with each line of the string. This translates the string format into one that, with specially derived algorithms, can be used by the computer, to produce the actual index headings with all parts rotated by following the algorithm. The PRECIS system has been translated and utilized for languages other than English, notably French, German, and Danish. Modifications needed for idiosyncracies of each language have been made. Some, such as those modifications needed for German, have turned out to have usefulness with English as weIl. All in all, the system has such advanced indexing concepts that it provides a kind of indexing not possible before the computer came into common usage. Austin, who joined the staff of the British National Bibliography in 1963, is currently a member of the British Library staff. His early work included a NATO-sponsored research assignment for the Classification Research Group (q.v.). This, in turn, led to the development of PRECIS.