Search (3 results, page 1 of 1)

  • × author_ss:"Bookstein, A."
  • × language_ss:"e"
  1. Bookstein, A.; Swanson, D.R.: ¬A decision theoretic foundation for indexing (1975) 0.01 
    0.013547006 = product of:
  0.09482904 = sum of:
    0.09482904 = weight(_text_:interpretation in 76) [ClassicSimilarity], result of:
      0.09482904 = score(doc=76,freq=2.0), product of:
        0.21405315 = queryWeight, product of:
          5.7281795 = idf(docFreq=390, maxDocs=44218)
          0.037368443 = queryNorm
        0.4430163 = fieldWeight in 76, product of:
          1.4142135 = tf(freq=2.0), with freq of:
            2.0 = termFreq=2.0
          5.7281795 = idf(docFreq=390, maxDocs=44218)
          0.0546875 = fieldNorm(doc=76)
  0.14285715 = coord(1/7)
    Abstract
    The indexing of a document is among the most crucial steps in preparing that document for retrieval. The adequacy of the indexing determines the ability of the system to respond to patron requests. This paper discusses this process, and document retrieval in general, on the basis of formal decision theory. The basic theoretical approach taken is illustrated by means of a model of word occurrences in documents in the context of a model information system; both models are fully defined in this paper. Through the main purpose of this papers is to provide insights into a very complex process, formulae are developed that may prove to be of value for an automated operating system. The paper concludes with an interpretation of recall and precision curves as seen from the point of view of decision theory
  2. Bookstein, A.: Informetric distributions : I. Unified overview (1990) 0.01 
    0.005062908 = product of:
  0.035440356 = sum of:
    0.035440356 = product of:
      0.07088071 = sum of:
        0.07088071 = weight(_text_:22 in 6902) [ClassicSimilarity], result of:
          0.07088071 = score(doc=6902,freq=2.0), product of:
            0.13085791 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037368443 = queryNorm
            0.5416616 = fieldWeight in 6902, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=6902)
      0.5 = coord(1/2)
  0.14285715 = coord(1/7)
    Date
    22. 7.2006 18:55:29
  3. Bookstein, A.: Informetric distributions : II. Resilience to ambiguity (1990) 0.01 
    0.005062908 = product of:
  0.035440356 = sum of:
    0.035440356 = product of:
      0.07088071 = sum of:
        0.07088071 = weight(_text_:22 in 4689) [ClassicSimilarity], result of:
          0.07088071 = score(doc=4689,freq=2.0), product of:
            0.13085791 = queryWeight, product of:
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.037368443 = queryNorm
            0.5416616 = fieldWeight in 4689, product of:
              1.4142135 = tf(freq=2.0), with freq of:
                2.0 = termFreq=2.0
              3.5018296 = idf(docFreq=3622, maxDocs=44218)
              0.109375 = fieldNorm(doc=4689)
      0.5 = coord(1/2)
  0.14285715 = coord(1/7)
    Date
    22. 7.2006 18:55:55

Years