Search (1 results, page 1 of 1)

  • × author_ss:"Wilson, C.S."
  • × theme_ss:"Informetrie"
  • × year_i:[1990 TO 2000}
  1. Wilson, C.S.: Defining subject collections for informetric analyses : the effect of varying the subject aboutness level (1998) 0.00
    0.0029000505 = product of:
      0.005800101 = sum of:
        0.005800101 = product of:
          0.011600202 = sum of:
            0.011600202 = weight(_text_:a in 1035) [ClassicSimilarity], result of:
              0.011600202 = score(doc=1035,freq=12.0), product of:
                0.053105544 = queryWeight, product of:
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.046056706 = queryNorm
                0.21843673 = fieldWeight in 1035, product of:
                  3.4641016 = tf(freq=12.0), with freq of:
                    12.0 = termFreq=12.0
                  1.153047 = idf(docFreq=37942, maxDocs=44218)
                  0.0546875 = fieldNorm(doc=1035)
          0.5 = coord(1/2)
      0.5 = coord(1/2)
    
    Abstract
    Examines how several commonly measured properties of subject literatures vary as an important factor in the compilation of subject collections (the amount which a document 'says' about a subject) is varied. This document property has been expressed in formal terms and given a simple measure for the one subject examined, the research topic of Bradford's law of scattering. It is found that lowering the level of subject aboutness required for admission to a collection produces a large increase in the size of the collection obtained, and an appreciable change in some size related properties
    Type
    a