Search (1 results, page 1 of 1)

  • × author_ss:"Beghtol, C."
  • × language_ss:"i"
  1. Beghtol, C.: ¬L'¬efficacia del recupero (1993) 0.02
    0.016797265 = product of:
      0.06718906 = sum of:
        0.047231287 = weight(_text_:retrieval in 4018) [ClassicSimilarity], result of:
          0.047231287 = score(doc=4018,freq=4.0), product of:
            0.124912694 = queryWeight, product of:
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.041294612 = queryNorm
            0.37811437 = fieldWeight in 4018, product of:
              2.0 = tf(freq=4.0), with freq of:
                4.0 = termFreq=4.0
              3.024915 = idf(docFreq=5836, maxDocs=44218)
              0.0625 = fieldNorm(doc=4018)
        0.019957775 = weight(_text_:of in 4018) [ClassicSimilarity], result of:
          0.019957775 = score(doc=4018,freq=10.0), product of:
            0.06457475 = queryWeight, product of:
              1.5637573 = idf(docFreq=25162, maxDocs=44218)
              0.041294612 = queryNorm
            0.3090647 = fieldWeight in 4018, product of:
              3.1622777 = tf(freq=10.0), with freq of:
                10.0 = termFreq=10.0
              1.5637573 = idf(docFreq=25162, maxDocs=44218)
              0.0625 = fieldNorm(doc=4018)
      0.25 = coord(2/8)
    
    Abstract
    Proposes a new experimental methodology for evaluating the results of library research from the user's viewpoint. Illustrates the theory by comparing the efficacy of information retrieved from 2 document catalogues, identical except that one is alphabetical and the other numerical/verbal. The methodology utilises the concept of 3 dependent variables: 'promising references retrieved' by the researcher; 'documents read'; and 'documents cited'. Claims that the retrieval effectiveness of the techniques outlined compares favourably with that of W.S. Cooper's methodology
    Footnote
    Retrieval effectiveness